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What is Form VAT431NB - Refunds for New Builds

Form VAT431NB is a key tool for individuals in the UK who are building their own home and want to reclaim VAT (Value Added Tax) paid on building materials and certain services. This form is designed specifically for those constructing new builds under the DIY Housebuilders VAT Refund Scheme. It allows self-builders to recoup VAT incurred during the construction of their new residential property, helping alleviate some of the financial burden of building a home from scratch.


What is Form VAT431NB - Refunds for New Builds


Eligibility for the VAT Refund Scheme

The VAT refund scheme applies to individuals who are building a new dwelling for personal residential use, not for business or commercial purposes. If you purchase a newly constructed home from a developer, VAT is typically zero-rated, meaning you don’t pay VAT on the final purchase. However, self-builders often find themselves paying VAT on materials, labor, and services, especially for aspects like construction materials and some professional services. This is where the VAT431NB form comes in, allowing DIY builders to reclaim the VAT they’ve paid.


To be eligible for the scheme, the following conditions must be met:

  • The dwelling must be a new build: This means the house should be a completely new structure, not a renovation of an existing home (although separate forms exist for conversion projects).

  • The property should be for personal residential use: VAT refunds are only applicable if the dwelling is intended for personal use as a residence. If it is being built as a commercial rental or as part of a business, it doesn’t qualify for VAT refunds under this scheme.

  • Planning permission: You must have valid planning permission for the construction. Both full and outline planning permissions are accepted, but you must provide the documents when submitting the claim.


What Can Be Claimed?

One of the most frequently asked questions by those embarking on self-build projects is what costs are reclaimable under this scheme. VAT can be claimed on:


  • Building materials: Items that are permanently attached to the building and necessary for its structure or use as a dwelling. These materials could include bricks, cement, windows, roofing materials, and pipes. However, non-structural items such as furniture, appliances, or carpets are not eligible.

  • Certain services: Though the labor provided by contractors for new builds is usually zero-rated, you can still claim VAT on some ancillary services like professional fees for planning and architectural designs, but this depends on whether VAT was charged.


There are strict limitations on what constitutes “building materials,” and not all materials used in the construction process qualify for a VAT refund. For example, garden landscaping, certain electrical appliances, fitted furniture, and carpets do not qualify. Additionally, VAT paid on professional services like architects, surveyors, or legal fees cannot be claimed back.


The Claim Process and Time Limits

The process for reclaiming VAT using form VAT431NB has recently been digitized to improve efficiency. As of December 2023, self-builders can submit their claims online through a new digital service launched by HMRC, making the process simpler and more streamlined. For those who prefer traditional methods, paper submissions using the VAT431NB form are still accepted. When completing the form, you’ll need to submit copies of key documents such as your building regulation completion certificate, planning permission, and building plans.


Previously, claimants were required to submit their VAT refund claims within three months of the project’s completion. However, from December 2023, this timeframe has been extended to six months. This extension has been welcomed by many self-builders, as it provides additional time to gather all necessary documentation and ensure that the application is completed accurately. Keep in mind, though, that if your project was completed before December 2023, the original three-month deadline still applies.


Once the claim is submitted, HMRC will review it to verify eligibility and may request additional documentation or clarification. If everything is in order, the refund is typically processed within one month. However, delays in processing are not uncommon, especially if any errors are found in the submission, such as incomplete invoices or missing paperwork.


Documentation Requirements

When submitting your VAT431NB form, it’s crucial to include all necessary documentation to avoid delays or rejections. Required documents include:


  • Building regulation completion certificate: A certificate from your local authority or an approved inspector confirming that the building meets all relevant building regulations.

  • Planning permission: Copies of both full and outline permissions, if applicable.

  • Invoices: You must provide valid VAT invoices for all the materials and services for which you’re claiming a refund. These invoices need to clearly show the VAT charged.

  • Bank details: Your bank details are required to facilitate the VAT refund.


Carefully organizing and submitting these documents with your form is vital for a smooth claim process. Incomplete or incorrect documentation can result in delays or even rejection of the claim.


Changes in VAT Regulations for 2024 and Their Impact on Claimants

The most significant update for self-builders reclaiming VAT under Form VAT431NB in 2024 is the extension of the submission deadline from three months to six months after project completion. This extension, which came into effect on December 5, 2023, offers much-needed flexibility for claimants. Previously, many individuals struggled to gather the necessary documentation within the tight three-month window, leading to rejected claims or incomplete submissions.


This new rule is particularly beneficial for those managing large self-build projects where documentation may not be readily available within the initial three-month timeframe. For example, it is common for delays in the issuance of completion certificates from local authorities, which can result in missing deadlines. The six-month extension provides additional time to ensure that all the necessary documents are correctly submitted, reducing the stress of a last-minute scramble.


The change also reflects HMRC's acknowledgment that the administrative burden on self-builders was too high, and errors were frequent under the previous system. Claims were often rejected due to minor issues, such as incorrect VAT rates on invoices or incomplete documentation. By extending the deadline, HMRC hopes to reduce the number of errors and facilitate a smoother claims process.


Transition to Online Submissions: A Step Towards Digital Efficiency?

In 2024, HMRC introduced an online submission process for VAT431NB claims, allowing claimants to file electronically instead of using the traditional paper form. This shift to a digital format is part of HMRC’s broader push towards modernizing tax processes and improving efficiency.


The online system provides several advantages. First, it simplifies the submission process by guiding users through each step, ensuring that all required fields are filled out and that the correct documents are uploaded. Additionally, the online platform offers instant feedback, flagging any errors or missing information at the time of submission. This can help claimants avoid the frustration of having their claims rejected weeks or months after submission due to simple mistakes.


However, as with any new digital system, there are concerns about whether it will truly speed up the refund process. HMRC has historically struggled with processing times for VAT refunds, particularly in the self-build sector, where claims can take up to six months to be processed. While the online system is designed to reduce processing times, it remains to be seen whether it will deliver on this promise.


Another key concern is the extent to which HMRC will incorporate automation and artificial intelligence into the claims process. If used effectively, AI could help HMRC process claims more quickly by automatically verifying invoices and identifying potential errors before a claim is fully processed. However, it’s unclear how much of a role automation will play in the early stages of the online system’s rollout.


Common Pitfalls and How to Avoid Them

When reclaiming VAT on a new build project using Form VAT431NB, there are several common pitfalls that claimants should be aware of to avoid delays or rejections. Understanding these potential issues is crucial for maximizing your refund and ensuring a smooth process.


  1. Incorrect VAT Charges on Invoices: One of the most frequent reasons for claims being rejected is the incorrect application of VAT on invoices. Not all materials and services attract VAT, and for new build projects, many services are zero-rated. For example, contractors’ labor for new builds is typically zero-rated, which means no VAT is charged. However, some contractors might mistakenly apply VAT, and if you attempt to reclaim it, your claim will be rejected.

  2. Exclusion of Certain Materials: It’s important to remember that not all building materials are eligible for VAT refunds. As mentioned earlier, VAT can only be reclaimed on materials that are permanently incorporated into the building’s structure. Items like fitted kitchens, furniture, and carpets do not qualify for refunds. Claiming VAT on these items will lead to delays, as HMRC will likely reject the claim and request revised invoices.

  3. Missing or Incorrect Documentation: Failure to provide the correct supporting documentation is another common reason for rejected claims. Claimants must submit valid VAT invoices, the building regulation completion certificate, planning permission, and a detailed breakdown of costs. If any of these documents are missing or incomplete, HMRC may either delay processing the claim or reject it outright.

  4. Understanding What Cannot Be Claimed: VAT refunds are not available for professional services such as architectural or legal fees, and it’s important for claimants to understand this limitation. Additionally, the hire of equipment or machinery is not covered under the scheme, and any attempt to reclaim VAT on such expenses will result in claim rejections​(.

  5. Timing of the Claim: Even with the extended six-month deadline, it’s crucial to submit the claim in a timely manner. Late submissions—those made after the six-month window—are likely to be rejected, and there is little recourse for appeal. Therefore, it’s important to begin gathering the necessary documents well in advance of the completion date.


Maximizing Your VAT Refund: Practical Tips

To maximize your VAT refund, careful planning is essential from the outset of your self-build project. Here are some practical tips to help ensure that you receive the full refund to which you’re entitled:


  1. Keep Detailed Records: Throughout the construction process, make sure to keep detailed records of all your expenses, including invoices, receipts, and contracts with contractors. Ensure that all invoices clearly show the VAT paid and are issued by VAT-registered suppliers. Keeping well-organized records will make the claims process easier and faster.

  2. Consult a VAT Specialist: Given the complexities of the VAT refund process for self-builders, it may be worthwhile to consult a VAT specialist or accountant. These professionals can help you navigate the rules, avoid common pitfalls, and ensure that your claim is filed correctly. Some claimants find that the cost of professional advice is more than offset by the increased refund they receive.

  3. Plan for Delays: Even though HMRC aims to process VAT refunds within one month, delays are common, especially for larger projects. If your financial plans rely on receiving the VAT refund promptly, make sure to factor in potential delays of several months. Having a contingency fund can help you manage any cash flow issues that arise as you wait for the refund.



Real-World Case Studies: VAT Refunds for New Builds

In this section, we’ll explore several real-life examples of individuals who have successfully reclaimed VAT using Form VAT431NB. These case studies highlight some of the common challenges claimants face, as well as strategies for overcoming these issues.


Case Study 1: A Delayed Completion

In one case, a self-builder in London experienced significant delays in receiving their VAT refund due to issues with their building regulation completion certificate. The property was structurally complete and habitable, but delays in receiving the official completion notice from the local authority meant that the builder missed the original three-month deadline to file their claim. However, thanks to the recent change in regulations, which extended the filing deadline to six months, the builder was able to submit the claim in time.


The builder faced another issue with the invoices submitted alongside the claim. Several of the invoices from suppliers did not meet HMRC’s strict criteria for VAT invoices, resulting in the rejection of certain parts of the claim. After revising the invoices to ensure they included the correct VAT rate and the supplier’s VAT number, the claim was resubmitted successfully. In this case, consulting with a VAT specialist proved crucial in avoiding further delays.


Case Study 2: Complex Construction Involving Multiple Suppliers

Another case involved a more complex construction project involving multiple suppliers and contractors. The self-builder hired a main contractor who managed much of the build but also purchased materials directly from several suppliers. The challenge arose when the main contractor zero-rated their services (as is common with new builds), while some of the material suppliers incorrectly charged VAT at the standard rate.


Initially, the self-builder attempted to reclaim VAT on the contractor’s services, not realizing that they were zero-rated. HMRC rejected this part of the claim, clarifying that only materials used in the construction could be refunded, not the labor involved. The builder then focused on the materials but had to request revised invoices from several suppliers, as some had incorrectly charged VAT.


Once the correct invoices were submitted, the claim proceeded smoothly, and the self-builder received the VAT refund within two months. This case illustrates the importance of understanding which parts of a construction project are eligible for VAT refunds and ensuring that suppliers charge the correct VAT rate upfront to avoid complications later.


Case Study 3: DIY Conversion Project

A final example involves a couple who undertook the conversion of an agricultural barn into a residential home. Since this was a conversion rather than a new build, the couple had to use Form VAT431C, which applies specifically to conversions. One of the challenges they faced was proving that the property had been non-residential for more than 10 years, a requirement for the reduced 5% VAT rate on services to apply​.


The couple worked with their local council to obtain documentation proving that the barn had been unused for over a decade, which was submitted alongside their VAT claim. Additionally, they faced difficulties in gathering all the necessary invoices for the materials, as some suppliers had charged the full 20% VAT rate rather than the reduced 5% rate for conversions. After liaising with suppliers to correct the invoices, the couple successfully reclaimed their VAT within three months.


Challenges Faced by Claimants

While the case studies above illustrate how VAT refunds for new builds and conversions can be successfully claimed, there are several common challenges that claimants should be prepared to navigate.


  1. Delays in Documentation: As seen in several cases, delays in receiving key documentation, such as building regulation completion certificates, can jeopardize the timing of a claim. While the extended six-month deadline provides some relief, it is still important for claimants to stay on top of their paperwork to avoid missing deadlines.

  2. Incorrect VAT Rates on Invoices: Many builders encounter issues with suppliers who incorrectly charge VAT. In new builds, contractor services are usually zero-rated, but this is not always clear to all parties involved in the project. Additionally, self-builders may mistakenly attempt to reclaim VAT on items that are not eligible, such as appliances or furniture​.

  3. Understanding the Rules: The rules governing VAT refunds on new builds can be complex, and misunderstandings about what qualifies for a refund are common. For example, VAT on professional services, such as architects or surveyors, is not refundable, yet many claimants are unaware of this.

  4. Processing Delays: Despite HMRC’s attempts to streamline the claims process with the introduction of the online system, processing delays are still an issue. Claims may take several months to process, particularly if there are any errors or missing information in the initial submission.


Preparing for Success: Practical Advice

To ensure a successful VAT refund claim, self-builders should take a proactive approach to managing their project’s finances and paperwork. Here are some final practical tips:


  • Start Early: Begin gathering documentation and organizing invoices from the outset of your project. This will help ensure that when the time comes to submit your VAT claim, you have all the necessary paperwork ready.

  • Double-Check Invoices: Before submitting your claim, carefully review all invoices to ensure they meet HMRC’s criteria. Each invoice should clearly show the VAT rate, the supplier’s VAT number, and the total VAT charged.

  • Consult a Professional: If you are unsure about any aspect of the VAT refund process, consider consulting a VAT specialist. They can provide invaluable guidance and help ensure that your claim is submitted correctly.


The VAT431NB form provides a vital opportunity for DIY housebuilders in the UK to reclaim VAT paid on building materials and services, making the construction of new residential homes more affordable. With the extension of the filing deadline and the introduction of an online claims process, the VAT refund scheme has become more accessible, though challenges remain in the form of complex regulations and potential delays in processing.


Understanding the eligibility criteria, keeping detailed records, and ensuring that suppliers charge the correct VAT rates are essential steps to ensure a smooth and successful claim. For self-builders and those converting non-residential properties, Form VAT431NB and VAT431C offer significant financial relief, provided the claim is handled with care and diligence.


Whether you are embarking on a new build or a conversion, being informed about the VAT refund process and planning ahead can make all the difference in maximizing your return and minimizing the stress involved in reclaiming VAT on your project.



How to Fill Form VAT431NB – Question by Question

Filling out Form VAT431NB can seem daunting at first, but it becomes much easier when you understand what each question is asking for and how to respond appropriately. This guide will walk you through the form, question by question, and provide example answers to help you complete it efficiently. Remember that accurate and complete information is crucial for ensuring your claim is processed smoothly. As of September 2024, this form remains essential for those reclaiming VAT on new build projects under the DIY Housebuilders VAT Refund Scheme. Form VAT431NB can be filled out online and in PDF format.


Send your completed form to:

BT&C VAT

HM Revenue and Customs

BX9 1WR


1. Is the property you have built a new build?

This is a simple yes or no question. If you are building a completely new residential property from scratch, you should tick "Yes." If you’re only renovating or converting an existing property, select "No." For new builds, this question is vital, as this scheme is specific to brand-new constructions.


Sample Answer: Yes.


2. Is your claim for the fit-out and finish of a building shell?

If you are completing a previously constructed shell, tick "Yes." You may need to provide additional evidence that the property was handed over to you as a shell. Otherwise, select "No."


Sample Answer: No.


3. Has the work been done on a completed dwelling purchased from a developer or builder?

If the property was already complete when you bought it, you are not eligible to claim VAT under this scheme, so you would tick "Yes" and stop completing the form. If you are building the home yourself, select "No."


Sample Answer: No.


4. Do you have approved building plans from your local authority?

This is a crucial question as approved building plans are mandatory for eligibility. You must have obtained and provided your local authority's approval for the building.


Sample Answer: Yes.


5. Do you have planning permission for your new build?

Similar to Question 4, having planning permission is mandatory for a VAT refund. Without planning permission, your project will not qualify for the scheme.


Sample Answer: Yes.


6. Do the terms of your planning permission prevent the separate disposal or use of the new building?

This refers to any restrictions in your planning permission that might limit the future use or sale of the building. If such restrictions exist, you’ll need to provide the condition number from your planning documents.


Sample Answer: No.


7. Do you have a completion certificate for your new build or proof of habitation?

A completion certificate from your local authority is essential to prove that the build is finished. If you don’t have this certificate, you must obtain one before filing for a VAT refund.


Sample Answer: Yes.


8. Certified date of completion

You need to provide the exact date when your building project was certified as complete. This must match the date on your completion certificate.


Sample Answer: 01/06/2024.


9. Are you claiming for any other building?

If you are only claiming VAT for your new residential property, select "No." If you are also claiming VAT on other buildings, such as a garage, explain the details and how you’ve calculated the VAT for each building.


Sample Answer: No.


10. Your personal details

Here, you will enter your full name, title (Mr, Mrs, etc.), and contact details, including email and phone number. Ensure these details are accurate, as HMRC may contact you if more information is needed.


Sample Answer:

Title: MrSurname: SmithFirst names: John Michael

Phone number: 07123 456789


11. Is this the building you are claiming for?

Confirm whether the building address listed is the one for which you are claiming VAT. If it’s the same as your current address, tick "Yes."


Sample Answer: Yes.


12. Address of building you are claiming for

If your new build is located at a different address than your current one, provide the address here.


Sample Answer: 123 New Build Street, London, SW1A 1AA.


13. Date you occupied the building

Indicate when you moved into the new property, even if it was before the completion certificate was issued.


Sample Answer: 01/07/2024.


14. Are you or your relatives intending to live in the property you are claiming for?

This question ensures that the property is for personal use and not for commercial purposes. If you or a relative are going to live there, tick "Yes."


Sample Answer: Yes.


15. Is there more than one claimant?

If you are filing the claim alone, select "No." If there are multiple claimants (e.g., joint owners), tick "Yes" and provide details for the other claimant(s).


Sample Answer: No.


16. Do you or any other claimant have an interest or association with a VAT-registered business?

If you or the other claimants are connected to a VAT-registered business, tick "Yes" and provide the business's VAT registration number in the next section.


Sample Answer: No.


17. VAT Registration Number (if applicable)

If you selected "Yes" to Question 16, provide the VAT number for the business associated with the claimant(s). If not applicable, leave this blank.


Sample Answer: N/A.


18. Bank or building society details

Provide the bank account information where you would like the VAT refund to be paid. This must be an account in the claimant’s name.


Sample Answer:Bank: UK BankAccount number: 12345678Sort code: 12-34-56Account holder’s name: John M. Smith.


19. Do you have an agent?

If you are using an agent to handle the VAT claim on your behalf, tick "Yes" and fill in their details in Question 21. If not, tick "No."


Sample Answer: No.


20. Do you give us authority to discuss your claim with your agent?

If you have an agent and you want HMRC to liaise directly with them regarding your claim, tick "Yes."


Sample Answer: N/A.


21. Details of your agent or representative

If you’ve authorized an agent, provide their full name, address, and contact details.


Sample Answer: N/A.


22. What type of building has been constructed?

Specify whether the property is a detached house, semi-detached, terraced, or other.


Sample Answer: Detached.


23. How many storeys are in your new build?

Indicate the number of storeys in the building.


Sample Answer: Two storeys.


24. How many reception rooms are in your new build?

List the number of reception rooms in the house (e.g., living rooms, dining rooms).


Sample Answer: Two.


25. How many bedrooms are in your new build?

Indicate how many bedrooms are in the property.


Sample Answer: Four.


26. How many bathrooms are in your new build?

Include all bathrooms, even en-suites.


Sample Answer: Three.


27. How many kitchens or utility rooms are in your new build?

Specify the number of kitchens or utility rooms.


Sample Answer: One kitchen, one utility room.


28. Do you have any other rooms that are not described above?

If your new build includes additional rooms that don’t fit the previous categories, list them here.


Sample Answer: No.


29. Have you built a garage with your new build?

If a garage is included in your construction, specify whether it is attached or within the property grounds.


Sample Answer: Yes, attached garage.


30. Provide information on other rooms and their purpose

If your new build includes rooms not covered by previous questions, such as a study, gym, or storage room, list them here and specify their purpose.


Sample Answer:

Room 1: Study – for home office use.

Room 2: Storage room – for general household storage.


31. Have you built a garage with your new build?

This asks if a garage was built as part of your new property. Indicate whether it is attached or detached.


Sample Answer: Yes, attached garage.


32. Invoice details – Table A

For this section, you need to enter details of invoices where VAT is shown separately. You’ll need to provide the following for each invoice:


  • Invoice number

  • Date of invoice

  • Description of the items

  • Supplier name

  • VAT registration number

  • Invoice total

  • Amount of VAT paid

  • Indicate whether the invoice is in your name


You don’t need to attach invoices at this stage, but you must be prepared to submit them if requested by HMRC.


Sample Answer (for one line in the table):Invoice number: 123456Date of invoice: 01/04/2024Description of items: 500 bricks for new build constructionSupplier name: ABC BuildersVAT Registration Number: 123456789Invoice total: £600Amount of VAT paid: £100Is the invoice in your name: Yes.


33. If any invoice is not in your name, explain why

If any of the invoices listed in Table A are not in your name, explain the reason. For example, the invoice might be in the name of another project partner or contractor.


Sample Answer: N/A (if all invoices are in your name).


34. Table A – Total amount of VAT paid

At the end of Table A, sum up the total VAT paid for all invoices where VAT is shown separately.


Sample Answer: £5,000.


35. Invoice details – Table B

In Table B, you need to enter details of invoices where VAT is not shown separately. Follow the same steps as for Table A, but for invoices where VAT is not itemized.


Sample Answer (for one line in the table):

Invoice number: 654321

Date of invoice: 15/05/2024

Description of items: Roof tiles for new build

Supplier name: XYZ Materials

VAT Registration Number: 987654321

Invoice total: £1,200Amount of VAT paid: £200

Is the invoice in your name: Yes.


36. If any invoice is not in your name, explain why

If any of the invoices in Table B are not in your name, provide a reason. This section is similar to question 33.


Sample Answer: N/A.


37. Table B – Total amount of VAT paid

Sum up the total VAT paid for all invoices where VAT is not shown separately.


Sample Answer: £2,000.


38. Total amount of VAT claimed where VAT is shown separately

This is a summary figure from Table A. It should match the total amount of VAT you listed in question 34.


Sample Answer: £5,000.


39. Total amount of VAT claimed where VAT is not shown separately

This is a summary figure from Table B. It should match the total amount of VAT you listed in question 37.


Sample Answer: £2,000.


40. Declaration and signature

By signing the declaration, you confirm that the information provided is correct and that the VAT being claimed was correctly charged. It is your responsibility to ensure the accuracy of the claim, even if someone else completed the form on your behalf. You must also declare that no other VAT claims have been or will be made for the same supplies.


Sample Answer:Signature: John M. SmithDate: 10/09/2024


Additional Tips:

  • Ensure that you attach all necessary documents, such as planning permissions, building plans, and completion certificates.

  • Double-check that the VAT registration numbers and VAT amounts listed on your invoices are correct.

  • Keep copies of all invoices and related documents, as HMRC may request these for verification.


This completes the detailed question-by-question breakdown of how to fill out Form VAT431NB. Filling it out carefully and correctly will help ensure that your VAT refund claim is processed efficiently.


What Should You Do if You Miss the Six-Month Deadline for Submitting Form VAT431NB?

Missing the six-month deadline for submitting Form VAT431NB can be a frustrating and stressful situation, especially after all the effort and money that goes into building your own home. However, not all hope is lost. The UK tax system has rules, but it also has processes in place to deal with exceptions and extenuating circumstances. In this article, we'll look at what options you have if you miss the deadline, and offer some practical advice for how to navigate this tricky situation.


1. Don’t Panic—Assess Why You Missed the Deadline

The first thing to do is not panic. Missing a deadline like this can feel overwhelming, but it’s important to stay calm and figure out exactly why you missed it. Did you miscalculate the completion date? Were there delays in getting essential documentation like the building completion certificate? Was it due to a personal issue, such as illness or unforeseen life events?


Understanding the root cause will help you determine what steps to take next and whether you have a valid reason to appeal to HMRC. In some cases, especially those involving external delays that are out of your control, you may have a chance to explain your situation and ask for an exception.


2. Check If the Completion Date Was Correctly Defined

One common reason people miss the six-month deadline is a misunderstanding of when the "completion" date occurs. In the VAT431NB process, the completion date isn't just when you move into the home—it’s when the local authority or building control officer issues the building completion certificate or signs off on the project. Sometimes, the house may be fully livable but technically incomplete in the eyes of building regulations.


If you submitted your form based on when you moved in but missed the actual "legal" completion date by a few weeks, you might have some leeway. If this is your situation, gathering evidence such as the date you received your completion certificate or emails between you and building control may help in any discussions with HMRC.


3. Contact HMRC as Soon as Possible

Once you’ve realized you missed the deadline, don’t delay in reaching out to HMRC. The sooner you do, the better your chances are of resolving the issue. You can contact HMRC’s VAT Helpline and explain your situation to a representative. They may guide you on what steps to take next or offer an opportunity to file a late claim, depending on your circumstances.


For example, if you missed the deadline by just a few days or weeks due to administrative delays, HMRC might be more lenient. The longer you wait after realizing you missed the deadline, the less likely they’ll be to consider an exception, so act quickly.


4. Write an Appeal Letter

In situations where you have a valid reason for missing the deadline—such as illness, documentation delays from local authorities, or other extenuating circumstances—you can write an appeal letter to HMRC. This letter should clearly explain why you missed the six-month window and provide any supporting documentation that might help your case.



Here’s an example of what a portion of this letter might look like:

 

Subject: Request for Exception on Missed Deadline for VAT431NB Submission


Dear Sir/Madam,


I am writing to request an exception to the six-month submission deadline for Form VAT431NB regarding my new build at [Property Address]. Due to unforeseen delays in receiving the building completion certificate from my local authority, I was unable to submit the form within the required timeframe.


The building was completed on [Completion Date], and I received the completion certificate on [Date of Certificate], which was later than anticipated due to administrative delays. I have attached relevant documents and communications with the local authority as evidence of the delay.


I kindly request that you consider this application for an exception, given the circumstances. I appreciate your time and consideration in this matter.


Sincerely,[Your Name][Your Contact Information]



 

In this letter, be sure to mention specific dates, any communications with third parties, and any additional evidence that supports your claim.


5. Provide Supporting Documentation

HMRC is unlikely to grant you any exception without clear evidence. When writing your appeal letter, you’ll need to attach supporting documents that prove why you missed the deadline. This could include:


  • Building completion certificates that were delayed.

  • Emails or letters from local authorities that show there were delays beyond your control.

  • Medical documents if a personal health issue caused the delay.

  • Proof of postal delays, if you submitted the form via mail and it was delayed.


The more evidence you can provide, the stronger your case will be. Keep copies of everything you send and be as detailed as possible.


6. Be Prepared for Rejection

Even with a well-written appeal and supporting evidence, there’s a chance HMRC might reject your request. If this happens, don’t get discouraged. While it may feel like the end of the road, there are still other options, such as lodging a formal complaint or taking the matter to a tax tribunal if you believe the decision was unfair.


7. Consider Filing a Formal Complaint

If your appeal is rejected and you feel you’ve been treated unfairly, the next step is to file a formal complaint with HMRC. The HMRC website has a complaints process that allows you to escalate your issue. When filing a complaint, ensure that you follow the outlined process and provide additional documentation if necessary.


The complaints process may take time, and the outcome isn’t guaranteed, but it can be worth pursuing if you have a strong case. Sometimes, persistence pays off, especially if your circumstances are unique or particularly challenging.


8. Seek Legal or Professional Advice

If you’re unsure about how to proceed or if your claim is rejected, seeking advice from a tax specialist or solicitor may be a wise move. These professionals can help you navigate the appeals process, craft a more compelling case, or assist you in taking legal action if necessary.


Many people don’t realize that there are specialist accountants and legal experts who deal specifically with VAT refunds on new builds. They have the knowledge and experience to guide you through complex tax regulations and ensure you’ve taken all the correct steps.


9. Learning for Next Time

If you miss the six-month deadline, it’s a hard lesson, but one you can learn from. Going forward, make sure you understand the VAT refund process from the start of your project. Keep all paperwork organized, especially when it comes to invoices, completion certificates, and other important documents.


It might also be worth setting reminders for key deadlines, such as the six-month window for submitting VAT refund claims. Sometimes, something as simple as putting the date in your calendar with regular reminders can prevent this kind of situation from happening again.


Missing the six-month deadline for submitting Form VAT431NB is far from ideal, but it isn’t the end of the road. Whether you miscalculated the completion date or encountered unexpected delays, contacting HMRC and submitting a well-documented appeal could still help you secure your VAT refund. Stay calm, be proactive, and don’t hesitate to seek professional help if needed. The process may take time, but you still have options to explore.


What Should You Do if Some of Your Invoices Are in a Foreign Currency for a VAT431NB Claim?

So, you’re in the middle of filling out your VAT431NB form for your new build, and you realize that some of your invoices are in a foreign currency. Don’t worry—you’re not the first person to run into this issue, and HMRC has provided guidance on how to handle it. This situation can arise if you’ve imported materials from overseas suppliers or worked with international contractors. Converting foreign currency invoices for VAT claims might seem complicated, but it's manageable if you follow the right steps. Let’s walk through how you can handle this with minimal fuss, using real-world examples to make things clearer.


1. Know the Rule: Convert to Sterling

When making a VAT431NB claim, HMRC requires all invoices to be reported in British pounds (GBP). This means that if you’ve paid for materials or services in euros, dollars, or any other currency, you need to convert the amounts to GBP when you fill out your form. But, here’s the catch: you can’t just pick any exchange rate you like. HMRC has specific rules about how to handle currency conversions.


The rate you use must be the exchange rate on the date of the invoice. HMRC won’t accept conversions based on average monthly rates or speculative exchange rates. Instead, you should use a reliable source, such as the HMRC exchange rate service or a commercial rate from the Bank of England or a major financial institution on the date the invoice was issued.


2. Finding the Right Exchange Rate

Let’s say you bought high-quality Italian marble for your new kitchen. The invoice is in euros, and you’re wondering how to convert that into pounds for your VAT refund claim. First, you need to look up the exchange rate for the day you were invoiced.


Example:

Invoice date: 10th June 2024Amount in euros: €3,500Exchange rate on 10th June 2024: 1 EUR = 0.86 GBP (as per HMRC or Bank of England data)

To convert the invoice amount into pounds:


€3,500 x 0.86 = £3,010

You would then enter £3,010 in the “Invoice total” field on your VAT431NB form.


3. Recording VAT in Foreign Currency

Foreign invoices often show VAT charged in the supplier’s currency. However, for your VAT431NB claim, it’s critical to convert this amount into GBP as well. Just like with the total invoice amount, you need to apply the exchange rate from the date of the invoice.


Example:

Let’s stick with that Italian marble purchase. If the supplier charged €500 in VAT, you would convert it using the same exchange rate as above:


€500 x 0.86 = £430

Now, you’ve got both the total invoice amount and the VAT in pounds, and you’re ready to enter them into the appropriate fields on the form.


4. Handling Fluctuations in Exchange Rates

Currency fluctuations can complicate matters. For instance, if you paid the invoice several days after it was issued and the exchange rate changed, you might have paid more (or less) in GBP than the rate on the day of the invoice. However, HMRC requires you to use the exchange rate from the date the invoice was issued, not the day you paid.


This can sometimes lead to minor discrepancies between what you paid in GBP and what HMRC expects in terms of your VAT claim. While this might feel frustrating, HMRC generally won't penalize you for these small differences, provided you follow the official exchange rate rules.


5. Supporting Documentation

Whenever you’re dealing with foreign currency invoices, HMRC will want to see how you’ve arrived at the GBP figures on your claim. This means you should keep the following documents on hand:


  • Original invoice in the foreign currency

  • Proof of the exchange rate used (e.g., a screenshot of the Bank of England rate on the invoice date)

  • Payment records showing what you paid in GBP, if applicable


Make sure to save these documents even if you don’t need to submit them initially. HMRC may request this documentation if they need to review your claim further.


6. Multiple Invoices with Different Currencies

What if you have invoices in different foreign currencies—say, euros for your marble and dollars for your imported kitchen appliances? The process is the same for each currency: find the appropriate exchange rate for the date of the invoice and convert the amounts to GBP.


Example:

  1. Invoice 1 (Italian marble):Amount: €3,500Date: 10th June 2024Exchange rate: 0.86 GBPConverted amount: £3,010

  2. Invoice 2 (American kitchen appliances):Amount: $5,000Date: 15th June 2024Exchange rate: 1 USD = 0.76 GBPConverted amount: $5,000 x 0.76 = £3,800


Once converted, you enter both amounts in GBP on your VAT431NB form. There’s no need to combine them before submission; just treat each invoice separately.


7. Using a Currency Conversion Service

Some people prefer to use a commercial currency conversion service for these kinds of tasks. These services can help you access historical exchange rates quickly, and they can ensure you use the correct rate from the date of the invoice. A few popular tools include XE.com, OANDA, and the Bank of England’s website. These sites often provide historical rates for specific dates, making it easier for you to meet HMRC’s requirements.


Keep in mind that whichever service you use, you should print or save proof of the exchange rate in case HMRC requests it. You’ll want to avoid a situation where you’re scrambling to find this information months later.


8. Submitting Your VAT431NB Claim: A Step-by-Step Example

Let’s walk through how you would handle foreign currency invoices when filling out your VAT431NB form.


  1. Gather all your invoices in foreign currencies and check the invoice dates.

  2. Find the historical exchange rate for each date using an official source, such as HMRC’s rates or the Bank of England.

  3. Convert the invoice total and VAT amounts from foreign currency to GBP.

  4. Enter the converted amounts in the appropriate fields on your VAT431NB form. You should report all amounts in GBP.

  5. Attach any additional documentation HMRC might need, including proof of the exchange rate used.

  6. Submit your claim and keep copies of everything for your records.


9. What if You Use Different Exchange Rates?

It’s important to note that you should be consistent when converting your invoices. Don’t switch between sources for your exchange rates or pick rates that seem more favorable to you. HMRC might check the rates you’ve used, and any discrepancies could raise red flags. Stick to one source—preferably HMRC’s exchange rate or the Bank of England’s—to avoid complications.


Dealing with foreign currency invoices when making a VAT431NB claim doesn’t have to be stressful. By using the right exchange rate from the invoice date and converting your amounts accurately, you can ensure your claim complies with HMRC’s rules. Whether you’re working with euros, dollars, or another currency, following these steps will help you avoid potential pitfalls and get the VAT refund you deserve. Just remember to keep thorough records and documentation in case HMRC has any questions.



What Documents Are Required for Your VAT431NB Claim?

Filing for a VAT refund on your new build using Form VAT431NB can seem like an uphill battle—especially when it comes to gathering the right documentation. After all, HMRC doesn’t just take your word for it. They need solid proof to ensure everything is above board. But don’t worry! Once you know what they’re looking for, the process becomes a lot more manageable. Let’s dive into what documents you need to have ready for a smooth VAT431NB claim.


1. Building Plans and Planning Permission

Before you can even think about reclaiming VAT on your new build, you need to ensure that you have planning permission in place. HMRC requires that you provide copies of approved building plans from your local authority. These plans serve as proof that the new build was legally sanctioned and followed the necessary planning guidelines.


Your planning permission should show that the project is a genuine new build and not just a renovation or conversion. Remember, you’re only eligible for VAT refunds if the project qualifies as a brand-new residential building. If you don’t have planning permission, it’s time to get in touch with your local council because, without this, your claim is a non-starter.


Example:

Let’s say you’re building a detached house on a plot of land. Once you’ve received planning permission from the local council, this document is one of the first things you’ll need to include with your VAT431NB form. Even if your planning process was a bit complicated—like switching from outline planning permission to full permission—you’ll need to submit evidence of both approvals.


2. Building Completion Certificate or Proof of Habitation

You can’t claim VAT for an unfinished build. That’s why HMRC requires you to provide either a completion certificate or proof of habitation. The completion certificate is issued by the local authority or a building control officer, confirming that the building complies with all building regulations and is safe to occupy.


If you’ve moved into the property before receiving the official completion certificate, you might still be able to submit proof of habitation. This could include documents like utility bills or council tax registration showing that you’re living in the property.


Example:

Imagine your build was completed on June 1, 2024, but your local council took a few weeks to issue the official completion certificate. No problem—you can still provide the certificate once you receive it, or use an electric bill showing the property is inhabited if the council is dragging its feet.


3. VAT Invoices

Arguably the most critical set of documents in your VAT431NB claim is your VAT invoices. These invoices should show the VAT you’ve paid on eligible building materials and services for the new build. For each invoice, HMRC will want to see:


  • Supplier name and VAT number

  • Invoice date

  • Detailed description of the items or services

  • Total amount paid and the VAT amount charged


Each invoice must clearly state the VAT amount; if it doesn’t, HMRC won’t count it toward your refund. This is one of the areas where claimants often trip up. Ensure that the invoices are legitimate and complete, and that they meet all of HMRC’s requirements for VAT-registered suppliers.


Example:

Let’s say you purchased a batch of roofing tiles for your new build. The invoice from the supplier should clearly show the total cost of the tiles, the VAT you paid, and the supplier’s VAT registration number. Without these details, HMRC might reject that part of your claim.


4. Proof of Payment

In some cases, HMRC may request proof of payment for large purchases, particularly for high-value materials or services. This can be a bank statement or credit card statement showing the payment for the invoice. This helps HMRC ensure that the VAT was genuinely paid and that there’s no discrepancy between the invoice and what you actually paid.


Example:

If you spent £20,000 on windows for your build, it’s likely that HMRC will want to see not just the invoice but also a copy of the bank statement proving that the payment was made. If your supplier offers installment payments, make sure you keep records of each payment to support your claim.


5. Schedule of Works

A schedule of works outlines the scope and timeline of the construction project. While not always mandatory, providing a schedule can help HMRC verify that the materials and services listed in your claim align with the progress of the build. This is especially helpful if you’re claiming for materials purchased in stages over time.


Example:

You might have purchased plumbing materials early in the build, but tiles for the bathroom much later. A schedule of works helps HMRC understand when these materials were actually used and why you’re claiming for them at different stages.


6. Planning Condition Documents (if applicable)

Sometimes, your planning permission might include specific conditions regarding the build. For instance, you might have a restriction that prevents you from selling part of the property separately or limits how certain areas of the build can be used. If this applies to you, HMRC may request copies of the planning condition documents.


Example:

If your planning permission specifies that you can’t use the garage as a separate dwelling, HMRC might ask for this document to verify that your VAT claim is only for the main residence and not any non-residential or commercial areas.


7. Bank Details

This might seem obvious, but you’ll need to provide your bank or building society details for HMRC to process the refund. Ensure that the bank account is in the same name as the person or entity making the VAT claim, as discrepancies here can lead to delays or rejections.


8. Proof of Non-Residential Use (for conversions)

If you’re converting a non-residential property into a home and using VAT431NB, HMRC may ask for proof that the building has not been used for residential purposes for at least 10 years (or 2 years, depending on the conversion type). This can include letters from the local authority or other documents confirming the building’s previous use.


Example:

If you’re converting an old barn into a home, you might provide a letter from the council confirming that the barn has been unused for a decade. This will support your claim and demonstrate that the property qualifies for the VAT refund.


9. Agent Authorization (if applicable)

If you’re using a tax agent or representative to submit your VAT431NB claim, you’ll need to submit a letter of authorization or a completed 64-8 form. This allows HMRC to communicate with your agent directly, making the process smoother if they need additional information.


Example:

You’ve hired a tax agent to handle your VAT431NB submission, and you want HMRC to contact them if there are any issues. The 64-8 form will give HMRC permission to discuss your claim with your agent, saving you from having to mediate between the two parties.


10. Apportionment Calculation (if claiming for multiple buildings)

If your VAT claim includes more than one building, such as a house and a garage, you’ll need to provide an apportionment calculation. This calculation should show how you’ve allocated costs and VAT between qualifying and non-qualifying buildings, such as separating out any commercial or non-residential parts of the build.


Example:

If you built a home and a separate office space on the same plot, HMRC will only allow you to claim VAT for the residential part of the build. Your apportionment calculation will detail how much VAT applies to the house versus the office, ensuring that your claim is accurate.


Gathering the right documents for your VAT431NB claim is a crucial step in ensuring a smooth refund process. Each document serves a specific purpose in proving the legitimacy of your claim and making sure that HMRC can verify the VAT you’re reclaiming. By keeping everything organized and ensuring that your paperwork is complete, you can avoid unnecessary delays or rejections.



What Are the Penalties for Submitting Incorrect VAT Claims on New Builds?

If you’re involved in building your dream home and planning to reclaim VAT using Form VAT431NB, you’ll want to be extra careful. Submitting incorrect or fraudulent VAT claims on new builds can land you in hot water with HMRC. While it’s perfectly understandable that mistakes can happen, especially in complex projects, HMRC doesn’t take VAT fraud or negligence lightly. In this post, we’ll break down the potential penalties you might face if things go wrong with your VAT431NB claim—and we’ll also cover how to avoid these pitfalls.


1. The Basics: Why Accuracy Matters

First, it’s important to understand why accuracy is so crucial when submitting VAT claims. The VAT refund scheme for new builds is a significant financial benefit for those constructing their own homes, but it also comes with strict rules. HMRC wants to ensure that VAT is only refunded for qualifying expenses—materials and services directly related to the construction of the new build.


Submitting an incorrect claim, whether intentionally or unintentionally, can result in penalties. This applies whether the error is an inflated claim, failure to provide the correct supporting documents, or attempting to claim VAT on non-qualifying items. The penalties can range from mild to severe, depending on whether HMRC deems the error to be an honest mistake or an attempt at fraud.


2. Types of Penalties

HMRC applies penalties based on the nature and severity of the error in your VAT claim. They have a few different categories that errors fall into, each carrying its own level of penalty:


2.1. Careless Errors

Careless errors are typically unintentional mistakes made when filling out the VAT431NB form. If HMRC believes that the error was the result of a lack of due diligence, you might face a penalty. The penalty for careless mistakes is usually less severe than those for deliberate errors. Careless mistakes can still be costly, with penalties ranging from 0% to 30% of the amount owed, depending on how soon the error is reported and corrected.


Example:

Let’s say you mistakenly included VAT on fitted furniture in your claim, which isn’t eligible for a VAT refund. If HMRC believes this was a careless mistake and you report it promptly, they may impose a penalty of around 10% of the erroneous claim amount.


2.2. Deliberate but Not Concealed Errors

This is where things start to get serious. If HMRC believes that you intentionally submitted an incorrect claim but did not go to great lengths to conceal it, the penalties jump considerably. These errors carry penalties of between 20% and 70% of the amount underpaid or overclaimed. Even if you didn’t mean to commit fraud, a deliberate error suggests that you should have known better and took some degree of risk.


Example:

Imagine you claim VAT on items like kitchen appliances or furniture, knowing full well that these don’t qualify. HMRC could penalize you heavily because it shows a deliberate disregard for the rules.


2.3. Deliberate and Concealed Errors

At the extreme end of the scale are errors that HMRC sees as both deliberate and concealed. This is where you’ve actively tried to hide the truth—perhaps by submitting false documents or providing misleading information. The penalties here are brutal, ranging from 30% to 100% of the erroneous claim, and in severe cases, you could even face criminal prosecution.


Example:

Let’s say you falsify invoices to inflate the VAT you’re claiming or you create fake documentation to justify certain expenses. If HMRC catches wind of this, expect the full force of penalties to come your way.


3. Interest Charges on Overclaimed VAT

On top of penalties, HMRC will also charge interest on any VAT that was overclaimed. This means that even if the penalty itself doesn’t seem too high, you could still end up paying more than you received due to accumulating interest. The interest rate is set by HMRC and is designed to discourage taxpayers from withholding payments or submitting incorrect claims.


Example:

If you overclaim £2,000 in VAT and HMRC discovers the mistake six months later, you’ll likely have to repay the £2,000 plus interest accrued during that period. Even small mistakes can add up to a larger financial headache if they’re not caught early.


4. Criminal Prosecution: When Fraud is Suspected

In the most serious cases, HMRC may choose to pursue criminal prosecution for VAT fraud. This is rare and typically reserved for cases where there’s clear evidence of deliberate deceit. If you’re found guilty, the consequences can be severe—ranging from hefty fines to potential prison time, depending on the scale of the fraud.


Example:

A contractor submits a series of falsified VAT invoices for materials that were never actually purchased. HMRC investigates and uncovers a broader pattern of fraudulent activity. In this case, criminal charges are almost inevitable, and the penalties will likely include imprisonment.


5. What You Should Do if You Realize You Made a Mistake

Mistakes happen, and HMRC knows this. If you realize that you’ve made an error on your VAT431NB claim, the best thing you can do is to correct it as soon as possible. By voluntarily disclosing the error to HMRC, you can significantly reduce the penalties. This is known as an unprompted disclosure.


Example:

You file a VAT431NB claim and later realize that you included VAT for some professional services (like architects’ fees), which aren’t eligible. If you contact HMRC immediately and correct the claim, the penalty might be reduced to 0% because you came forward voluntarily.


6. How to Avoid Penalties in the First Place

The easiest way to avoid penalties is to ensure that your VAT claim is accurate and complies with HMRC’s rules. Here are a few tips to help you avoid getting into trouble:


  • Double-check eligibility: Make sure that all the items and services you’re claiming VAT on are actually eligible under the VAT431NB scheme.

  • Keep thorough records: Store copies of all invoices, proof of payment, and any correspondence with suppliers or contractors. If HMRC asks for supporting documents, you’ll have everything ready.

  • Get professional advice: If you’re unsure about any part of the VAT process, consider hiring a VAT specialist or accountant. They can help you navigate the rules and ensure that your claim is compliant.

  • Submit on time: Late submissions or missed deadlines can raise red flags with HMRC, so ensure that all forms and claims are submitted within the required timeframes.


7. Appealing Against a Penalty

If you believe that HMRC has imposed an unfair penalty, you have the right to appeal. In some cases, penalties may be reduced or even waived if you can prove that the error was a genuine mistake and that you took reasonable care when filing your claim.

Example:


You receive a penalty for a careless error, but you can demonstrate that you relied on advice from a professional accountant who made the mistake. In such cases, HMRC might reduce the penalty if you can show that you took reasonable steps to get it right.


Submitting an incorrect VAT431NB claim can result in some hefty penalties, but the severity of the punishment depends on the nature of the mistake. Whether it’s a careless error or a deliberate attempt to defraud HMRC, being upfront and fixing any mistakes quickly is your best bet to avoid serious financial consequences. At the end of the day, accuracy and honesty are your biggest allies when navigating the VAT refund process.


How Do You Calculate the VAT Reclaimable If Only Part of the Property Qualifies?

If you’re building a new home or converting a property and planning to reclaim VAT using Form VAT431NB, you might face a situation where only part of the property qualifies for VAT refunds. For example, you could be building a house with a home office, a garage, or another section that doesn’t entirely meet HMRC’s criteria for a residential VAT reclaim. So, how do you handle the situation when only part of the property qualifies? Let’s break it down.


1. Understand What "Qualifies" for VAT Reclaim

First off, it’s important to understand what “qualifies” for a VAT refund when it comes to new builds. Under the VAT refund scheme for DIY housebuilders, VAT can be reclaimed on the cost of materials and some services directly related to constructing a residential property. This means the property has to be a place where you (or your relatives) intend to live.


However, not all parts of a property necessarily qualify. For example, if you are building a home office, a separate annex for business use, or a space that could generate income (like a rental property), these parts might not be eligible for a VAT refund. Similarly, VAT on items like furniture, appliances, or anything that’s not considered a permanent fixture, is also not reclaimable.


2. Apportioning VAT Based on Qualifying and Non-Qualifying Parts

When you have a property where only certain parts qualify for VAT refunds, you’ll need to apportion the VAT accordingly. Apportionment means breaking down the total costs and determining what percentage of those costs relates to the qualifying residential parts of the building versus the non-qualifying parts.


The key here is to apply fair and reasonable methods to allocate the costs between the qualifying and non-qualifying areas. HMRC expects this to be done carefully, and if they feel your apportionment is inaccurate or unfair, they may ask for more details or even reject parts of your claim.


Example:

Imagine you’re building a new house that includes a separate annex designed as a rental property. The total cost of the build is £300,000, but £50,000 of that relates to the annex, which you intend to let out. The annex is a business space, so you can’t claim VAT on that portion of the build. You would need to apportion the costs and VAT between the qualifying residential part of the house (£250,000) and the non-qualifying annex (£50,000). The VAT refund would only apply to the £250,000 portion of the build.


3. Breaking Down Invoices

To make things even clearer, let’s talk about how this apportionment works at the invoice level. When you’re building or converting a property, you’ll likely have numerous invoices for materials and services. If an invoice covers both qualifying and non-qualifying parts of the property, you’ll need to break down that invoice into portions that relate to each.


Example:

Let’s say you’ve bought £10,000 worth of bricks, and £2,000 of those bricks were used for constructing the annex. Since the annex is a non-qualifying part of the property, you’ll need to deduct the VAT on those bricks from your claim. So, instead of claiming VAT on the full £10,000, you’d claim on £8,000, which is the amount that was used for the qualifying residential part of the build.


4. How to Apportion Shared Areas

It can get a little tricky when dealing with shared areas like driveways, garages, or hallways that serve both qualifying and non-qualifying parts of the property. In these cases, you’ll need to apply a reasonable percentage to allocate the VAT costs.


Example:

Let’s say you’re building a shared driveway that will serve both your main house (qualifying) and the annex (non-qualifying). If 80% of the driveway serves the main house and 20% serves the annex, you would only claim VAT on the 80% of the total cost. So, if the driveway costs £10,000, you’d claim VAT on £8,000 (80%) of that cost.


5. How to Calculate VAT on Services

When it comes to services like labor from builders or contractors, the same principles of apportionment apply. If a builder’s invoice includes work done on both the qualifying and non-qualifying parts of the property, you’ll need to split the VAT accordingly.


Example:

If your builder charges £50,000 for the entire project, but £10,000 of that relates to the non-qualifying annex, you can only claim VAT on the £40,000 related to the qualifying residential area.


6. Using Floor Space to Apportion Costs

A practical method to apportion VAT costs, especially for mixed-use areas, is by using the floor space method. This involves calculating the percentage of the total floor space that’s used for qualifying residential purposes versus non-qualifying purposes. You then apply this percentage to the overall costs and VAT.


Example:

Let’s say your entire property has a floor area of 200 square meters, and the annex takes up 40 square meters. The annex represents 20% of the total floor space, meaning 80% of the property is for residential use. If your total build cost is £300,000, you would apply the 80/20 split to calculate that £240,000 of the build relates to the qualifying residential part, and £60,000 relates to the non-qualifying annex.

In this case, you can only claim VAT on the £240,000.


7. Apportioning Non-Residential Spaces

The most common reason for apportioning VAT is when part of the property is used for non-residential purposes, like a home office, a garage used for business, or a rental annex. Non-residential spaces generally do not qualify for VAT refunds under the VAT431NB scheme.


Example:

Imagine you’re building a garage that will partly be used to store personal vehicles and partly as a workshop for your business. If 60% of the garage is dedicated to personal use and 40% to the business, you can only reclaim VAT on the 60% that serves the qualifying residential part.


8. Calculating VAT on Extensions or Additions

Sometimes, you might be adding an extension to an existing property, and part of the extension may serve a non-residential purpose, such as a home office. In this case, you’ll need to apportion the VAT for the costs of the extension based on the space allocated for residential versus business use.

Example:

If your extension adds 50 square meters to your home, and 10 square meters of that will be used as a home office, you’d apportion the VAT costs for the extension based on the 80/20 split between residential and business use. So, if the extension costs £100,000, you would only claim VAT on £80,000.


9. Supporting Your Apportionment Calculation

HMRC may want to see how you arrived at your apportionment, especially if there are mixed-use areas or if the split between qualifying and non-qualifying parts isn’t immediately obvious. To support your apportionment calculation, keep detailed records of:


  • Floor plans showing the layout of the property

  • Invoices clearly broken down by area or use

  • Any agreements or planning documents that explain how different parts of the property will be used


By providing this evidence, you’ll make it easier for HMRC to understand your reasoning and reduce the risk of your claim being rejected.


Calculating VAT reclaimable when only part of the property qualifies can seem complicated, but with the right approach, it’s entirely manageable. The key is to apportion costs fairly and accurately, using methods like floor space percentages or invoice breakdowns to ensure you’re claiming the correct amount of VAT. Whether you’re dealing with a rental annex, a home office, or any other non-qualifying space, careful calculation and good record-keeping will go a long way in ensuring a smooth VAT refund process.


Case Study of Someone Dealing with VAT431NB – Refunds for New Builds

Meet Jonathan Harris, a 39-year-old from Oxfordshire who recently built his dream home—a modern three-bedroom house on a quiet plot of land. Like many self-builders, Jonathan decided to take advantage of the DIY Housebuilders VAT Refund Scheme using the VAT431NB form. This scheme allows individuals like him to reclaim the VAT paid on building materials and some services used in the construction of a new home. Here's a detailed look at Jonathan’s journey through the entire process, the challenges he faced, and the lessons he learned.


Background: Building the Dream

Jonathan’s project began in 2022 after he purchased a plot of land in the Oxfordshire countryside for £150,000. The plan was to build a home where he and his family could live permanently. His budget for the build was set at £300,000, which included all construction materials, labor, and fees. Throughout the process, he paid VAT on everything from bricks and windows to plumbing and electrical work.


Since new builds are eligible for VAT refunds, Jonathan knew he could recover some of these costs using the VAT431NB form. But first, he had to meet several requirements, including:


  • Ensuring the property was for personal residential use.

  • Completing the building to a stage where it was habitable.

  • Obtaining a completion certificate from his local authority.


Jonathan was aware that certain items like kitchen appliances, furniture, and professional fees wouldn’t be eligible for a VAT refund, so he made sure to keep detailed records of his qualifying purchases.


Step 1: Gathering the Right Documentation

The most time-consuming part of the VAT reclaim process was ensuring he had all the right documentation. HMRC is particular about what qualifies, so Jonathan made sure to collect:


  • Planning permission documents.

  • Building completion certificate issued by the local council.

  • VAT invoices for every purchase.


Jonathan knew that only materials “incorporated” into the house—like bricks, windows, and plumbing—could be claimed. For each invoice, he checked that it showed the supplier’s name, the VAT registration number, and the VAT amount paid. This was a crucial step, as HMRC won’t accept receipts that lack this information.


Example of Materials Eligible for VAT Refund:

  • £5,000 on bricks (with 20% VAT charged).

  • £3,500 on roofing materials.

  • £2,000 on plumbing fixtures.


However, when it came to items like furniture or kitchen appliances, these were not eligible. Jonathan had to separate these costs carefully.


Step 2: Filling Out the VAT431NB Form

Once the house was finished in February 2024, Jonathan set about completing the VAT431NB form. This form asks for detailed information about the project, including:


  • The total cost of the project.

  • The VAT paid on qualifying materials.

  • A breakdown of what was used for residential purposes.


Jonathan had one complication: he had built a small home office attached to the house, which wouldn’t qualify for the VAT refund as it was intended for his freelance business. Therefore, he had to apportion the VAT to separate the qualifying residential part of the build from the non-qualifying office space.


Using the floor space method, he determined that the home office took up about 10% of the total floor area. This meant he could only reclaim 90% of the VAT for any shared materials (like the roofing and flooring).


Apportionment Calculation:

  • Total floor area of the house: 200 square meters.

  • Home office area: 20 square meters.

  • Jonathan could claim 90% of the VAT on shared costs.


For example, if the total VAT on roofing materials was £3,500, Jonathan could only claim £3,150 (90% of the total).


Step 3: Submitting the Claim

Once all the documents were gathered and the form was filled out, Jonathan submitted his VAT431NB claim online through HMRC’s new digital service, which was introduced in December 2023 to make the process easier and quicker. The digital submission also reduced the risk of errors.


Jonathan had spent around £30,000 on materials that qualified for a VAT refund. At 20% VAT, this amounted to £6,000 in VAT paid. After apportioning for the home office, the total VAT he could claim was around £5,400.


Step 4: Waiting for HMRC’s Response

After submitting his claim, Jonathan received an acknowledgment from HMRC within two weeks. HMRC asked a few follow-up questions about the apportionment and requested copies of specific invoices, particularly for materials that were shared between the house and the home office. Jonathan promptly provided these, along with additional documentation to support his apportionment calculations.


Step 5: Receiving the VAT Refund

Four weeks after responding to HMRC’s queries, Jonathan received a letter confirming that his claim had been approved for £5,400. A week later, the funds were deposited into his bank account. The entire process, from the time he submitted the claim to receiving the refund, took around six weeks.


Lessons Learned

Jonathan’s experience highlights some key lessons for anyone dealing with a VAT431NB claim:


  1. Start collecting documents early: The biggest challenge Jonathan faced was ensuring that all his invoices were correct and included VAT details. He had to chase down a few suppliers who had issued incomplete invoices.

  2. Be clear on what qualifies: Jonathan initially thought he could claim VAT on his home office, but he quickly learned that business spaces don’t qualify for the scheme. By apportioning the costs, he avoided issues with HMRC.

  3. Use the new digital service: The digital submission process made it easier for Jonathan to track his claim, and he avoided the delays that are sometimes associated with paper submissions.

  4. Be prepared for follow-up questions: HMRC is known to scrutinize claims, particularly when it comes to mixed-use areas. Jonathan’s detailed documentation of his apportionment calculations made this part of the process smoother.


Jonathan’s experience with the VAT431NB form was largely positive, thanks to his careful planning and attention to detail. While the process requires patience and organization, it’s worth the effort for self-builders like Jonathan, who were able to reclaim a significant portion of their VAT. For anyone planning a new build in the UK, the key takeaway is to stay organized, gather the right documents, and know which parts of your project qualify for a VAT refund.


How a VAT Accountant Can Help You with the VAT431NB Form


How a VAT Accountant Can Help You with the VAT431NB Form

Filing a VAT431NB form for a VAT refund on a new build project in the UK can seem like a straightforward process, but it’s filled with complexities that can trip up even the most organized self-builders. A VAT accountant can be an invaluable resource in navigating these challenges, ensuring your claim is accurate, timely, and maximized for the best return. From understanding the intricacies of what qualifies for a refund to managing the detailed paperwork, a VAT accountant can be your best ally. Here’s how.


1. Understanding the VAT Refund Process

One of the key benefits of working with a VAT accountant is their deep understanding of the VAT refund process and how it applies to new builds. The VAT431NB form allows self-builders to reclaim VAT on eligible materials and some services, but the rules can be complex. A VAT accountant knows the exact items that qualify for VAT refunds—such as bricks, concrete, roofing, and plumbing materials—and can advise you on what you can and cannot claim.


Example:

Let’s say you’re unsure if certain electrical fittings or landscaping materials qualify for a VAT refund. A VAT accountant will clarify whether these items meet HMRC’s requirements, ensuring you don’t accidentally overclaim (which could result in penalties) or underclaim (leaving money on the table).


2. Handling Complex Apportionment Calculations

In cases where only part of a property qualifies for a VAT refund—such as when a home includes a non-residential space like a home office or rental annex—calculating the correct amount of VAT to claim can be tricky. A VAT accountant can handle these complex apportionment calculations, making sure the claim is accurate and that HMRC accepts it.


Example:

Imagine you’ve built a home with a garage used for both personal and business storage. A VAT accountant will determine the percentage of the garage that qualifies for VAT reclamation and help you apportion the costs between the qualifying and non-qualifying parts of the build​.


3. Maximizing Your VAT Reclaim

A VAT accountant can help you maximize your VAT reclaim by ensuring you don’t miss out on eligible items. It’s easy for self-builders to overlook small expenses or think they don’t qualify for VAT refunds, but a VAT accountant will have the knowledge to include all eligible items, ensuring you get back as much VAT as possible. They will check every invoice and ensure that nothing is missed, even tracking smaller expenses like delivery charges on building materials.


Example:

Jonathan, a self-builder, nearly missed reclaiming VAT on delivery charges for his roofing materials. However, his VAT accountant pointed out that delivery charges are eligible for a refund if they are included in the total invoice, adding a few hundred pounds to his final VAT reclaim.


4. Ensuring Compliance and Avoiding Penalties

One of the biggest risks in filing a VAT431NB claim is making mistakes that lead to penalties. Mistakes such as claiming VAT on ineligible items, submitting incorrect invoices, or failing to meet HMRC’s documentation standards can result in fines, delays, or even rejections of your entire claim. A VAT accountant ensures your claim complies with HMRC’s strict requirements, avoiding common errors that could cost you.


Example:

HMRC has specific rules about VAT invoices—they need to show the supplier’s name, VAT number, date, description of items, and VAT amount. A VAT accountant ensures all invoices are correct and meet HMRC’s standards before they are submitted. This level of detail reduces the risk of your claim being rejected or delayed.


5. Navigating HMRC Queries and Requests for More Information

Once you submit your VAT431NB claim, HMRC may ask for additional information, clarification, or further documentation. This can happen if your claim contains complexities, such as mixed-use areas or large sums of money. Dealing with HMRC’s queries can be time-consuming and stressful, but a VAT accountant will handle this correspondence on your behalf, ensuring that all responses are accurate and timely.


Example:

After submitting his VAT431NB form, Jonathan received a request from HMRC for further details on a large invoice related to both residential and non-residential areas. His VAT accountant stepped in, providing the necessary documentation and an explanation of the apportionment. Thanks to the accountant’s expertise, the query was resolved quickly, and the claim proceeded without further delays.


6. Time-Saving Benefits

Let’s face it—building a new home is a stressful and time-consuming process. The last thing you want to deal with is weeks of paperwork, calculations, and follow-up with HMRC. A VAT accountant saves you time by managing the entire process from start to finish. They’ll gather your invoices, calculate the VAT, complete the VAT431NB form, and submit the claim on your behalf.


Example:

Instead of spending hours sorting through a mountain of invoices and worrying about whether they’re correct, Jonathan handed everything over to his VAT accountant. This allowed him to focus on other aspects of his new home, knowing that the VAT reclaim process was in safe hands.


7. Keeping Track of Deadlines

The VAT refund process for new builds has strict deadlines. You must submit your VAT431NB claim within three to six months of receiving your building completion certificate, depending on when your project was completed​. Missing this deadline can result in the loss of your entire VAT refund. A VAT accountant keeps track of these deadlines and ensures your claim is submitted on time.


Example:

Jonathan received his building completion certificate on June 1, 2024. His VAT accountant immediately flagged the three-month deadline and began preparing the claim, submitting it well before the cut-off date. Had Jonathan managed the process himself, he might have cut it too close, risking the refund.


8. Handling Foreign Currency Invoices

If you’ve imported materials or services from abroad, you’ll likely have invoices in foreign currencies. HMRC requires that these invoices be converted to GBP using the exchange rate applicable on the date of the invoice. A VAT accountant will ensure these conversions are done correctly, using the appropriate exchange rate and providing proof of the conversion if necessary.


Example:

Jonathan imported high-end windows from Germany and paid for them in euros. His VAT accountant handled the conversion, ensuring that the VAT was calculated in pounds and documented according to HMRC’s standards.


9. Handling Appeals or Disputes

If HMRC disputes your claim or rejects part of it, a VAT accountant can assist with appeals. They’ll review the reason for rejection, provide additional documentation if needed, and represent you in any correspondence with HMRC. Having a professional handle the appeals process increases the likelihood of success and reduces the stress involved.


Example:

Jonathan’s initial claim was partially rejected due to a misunderstanding about his home office’s eligibility. His VAT accountant prepared a thorough appeal, complete with evidence supporting the apportionment calculation, and successfully overturned HMRC’s decision.


10. Expert Advice Tailored to Your Project

Finally, a VAT accountant brings expert, tailored advice to your specific project. Every self-build is different, and a VAT accountant can help you navigate the unique aspects of your project, whether you’re building a home with mixed-use areas, importing materials, or dealing with complex apportionments.


Example:

Jonathan’s VAT accountant not only handled the paperwork but also advised him early in the project on what items would and wouldn’t qualify for VAT refunds. This proactive advice helped Jonathan make informed purchasing decisions, saving him money in the long run.


Navigating the VAT431NB form and the VAT refund process for new builds can be complicated and time-consuming. A VAT accountant helps make the process smoother, ensuring your claim is accurate, compliant, and maximized for the best possible return. Whether it’s handling apportionments, managing deadlines, or communicating with HMRC, a VAT accountant provides invaluable expertise that can save you both time and money. If you’re planning to reclaim VAT on a new build, working with a VAT accountant is one of the best decisions you can make.



FAQs


1. How long does it typically take to receive a VAT refund after submitting Form VAT431NB?

It usually takes around 30 days for HMRC to process your VAT refund, but delays are common, especially if documentation is incomplete or there are errors in your submission.


2. What happens if you miss the six-month deadline for submitting Form VAT431NB?

If you miss the six-month deadline, HMRC will likely reject your claim, and there is little recourse for late submissions unless you can prove exceptional circumstances.


3. Can you claim VAT on used or second-hand building materials for a new build?

No, VAT cannot be reclaimed on used or second-hand materials; the materials must be new and directly incorporated into the building.


4. Can you claim VAT on utilities like water and electricity during the construction phase?

No, VAT on utilities such as water and electricity during the construction phase is not eligible for a refund under the VAT431NB scheme.


5. Is there a limit to the amount of VAT you can claim on a new build project?

No, there is no specific upper limit on the amount of VAT you can claim, as long as the materials and services meet the eligibility criteria for the scheme.


6. Can VAT be reclaimed on landscaping or garden design services?

No, landscaping and garden design services are not eligible for VAT refunds under the VAT431NB scheme.


7. Can you submit multiple claims using Form VAT431NB if your project is ongoing?

No, HMRC only allows one claim per project, so you must wait until the project is complete before submitting your claim.


8. What should you do if some of your invoices are in a foreign currency?

You must convert any invoices in foreign currencies into GBP using the exchange rate applicable on the date the invoice was issued.


9. How long do you need to keep your records after submitting a VAT431NB claim?

You must keep your records, including invoices and receipts, for at least six years after submitting your claim in case HMRC requests an audit.


10. Can VAT be reclaimed on legal fees related to the purchase of land for a new build?

No, VAT on legal fees, including those related to land purchase, is not eligible for a refund under the VAT431NB scheme.


11. Does VAT need to be charged on labor for a new build project?

No, labor for new builds is typically zero-rated, meaning no VAT should be charged by contractors.


12. Can you claim VAT on insurance premiums for the construction project?

No, VAT on insurance premiums for the construction project is not eligible for a refund under the VAT431NB scheme.


13. What happens if your VAT invoices are incomplete or incorrect?

HMRC may reject your claim if the invoices are incomplete or do not show the correct VAT rate, supplier’s VAT number, or other required details.


14. Can you reclaim VAT on self-storage fees during the construction project?

No, VAT on self-storage fees is not eligible for a refund under the VAT431NB scheme.


15. Can you use a VAT refund from one project to offset VAT owed on another project?

No, VAT refunds from one project cannot be offset against VAT owed on another; each claim is processed independently.


16. Can VAT be reclaimed on temporary accommodation expenses during the construction project?

No, VAT on temporary accommodation expenses is not eligible for a refund under the VAT431NB scheme.


17. Can you claim VAT on fixtures such as built-in wardrobes or kitchen cabinets?

Yes, built-in wardrobes and kitchen cabinets are considered permanent fixtures and may be eligible for a VAT refund.


18. Can VAT be reclaimed on architect's fees if the architect also manages the build?

No, even if the architect manages the build, VAT on professional fees such as those charged by architects is not eligible for a refund.


19. Are there specific rules for claiming VAT on eco-friendly materials?

No special rules apply for eco-friendly materials; they must meet the general eligibility criteria, such as being permanently incorporated into the building.


20. Can you claim VAT on appliances like boilers and radiators?

Yes, essential appliances such as boilers and radiators that are part of the permanent structure are eligible for VAT refunds.


21. Can VAT be reclaimed on security systems installed during construction?

Yes, security systems such as alarms and CCTV, if permanently installed, are eligible for VAT refunds under Form VAT431NB.


22. Can you claim VAT on fencing or boundary walls for the property?

Yes, VAT on fencing and boundary walls may be eligible for a refund as they are considered part of the permanent structure.


23. What should you do if HMRC requests additional documents after submitting your claim?

You should promptly provide any additional documents requested by HMRC to avoid delays or rejections of your VAT refund claim.


24. Can VAT be reclaimed on scaffolding or temporary structures?

No, VAT on temporary structures such as scaffolding is not eligible for a refund under the VAT431NB scheme.


25. Can you claim VAT on demolition costs for a previous building on the site?

Yes, VAT on demolition costs may be eligible for a refund if the demolition is necessary for the construction of the new build.


26. What is the VAT treatment for a new build garage or outbuilding?

Garages and outbuildings that are part of the new build and used for residential purposes may qualify for VAT refunds.


27. Can VAT be reclaimed on planning permission fees for the new build?

No, VAT on planning permission fees is not eligible for a refund under the VAT431NB scheme.


28. Can VAT be reclaimed on materials purchased from non-VAT registered suppliers?

No, you cannot reclaim VAT on materials purchased from non-VAT registered suppliers, as no VAT will have been charged.


29. Can you claim VAT on the hire of heavy machinery for construction?

No, VAT on the hire of machinery is not eligible for a refund under the VAT431NB scheme.


30. What happens if you lose an invoice needed for your VAT refund claim?

If you lose an invoice, you should contact the supplier for a replacement, as HMRC will require proper documentation to process your claim.


31. Can VAT be reclaimed on renewable energy installations, such as solar panels?

Yes, VAT on renewable energy installations like solar panels may be reclaimed if they are permanently incorporated into the building.


32. Can you claim VAT on a swimming pool built as part of the new home?

No, VAT on swimming pools is not eligible for a refund under the VAT431NB scheme.


33. Can VAT be reclaimed on professional property valuation services?

No, VAT on property valuation services is not eligible for a refund under the VAT431NB scheme.


34. Can you submit a VAT431NB claim online if you started the project before December 2023?

Yes, the online submission system can be used for projects completed after December 2023, even if the project started earlier.


35. Can you claim VAT on construction for a holiday home?

Yes, VAT may be reclaimed if the new build is intended for use as a private holiday home, provided it meets the residential criteria.


36. Can you reclaim VAT on second homes built for personal use?

Yes, VAT can be reclaimed on second homes intended for personal residential use, as long as they are not used for commercial purposes.


37. Can VAT be reclaimed on the cost of a home office included in the new build?

Yes, you can reclaim VAT on a home office as long as the overall building is primarily used as a residential dwelling.


38. Are there any penalties for submitting incorrect VAT claims on new builds?

Yes, submitting incorrect or fraudulent claims can result in penalties, fines, or prosecution by HMRC.


39. Can VAT be reclaimed on donations or sponsorships related to the new build?

No, VAT on donations or sponsorships is not eligible for a refund under the VAT431NB scheme.


40. How do you calculate the VAT reclaimable if only part of the property qualifies?

You must apportion the VAT based on the percentage of the property that qualifies for a refund, providing a clear breakdown of costs to HMRC.


Disclaimer:

 

The information provided in our articles is for general informational purposes only and is not intended as professional advice. While we strive to keep the information up-to-date and correct, Pro Tax Accountant makes no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability, or availability with respect to the website or the information, products, services, or related graphics contained in the articles for any purpose. Any reliance you place on such information is therefore strictly at your own risk.

 

We encourage all readers to consult with a qualified professional before making any decisions based on the information provided. The tax and accounting rules in the UK are subject to change and can vary depending on individual circumstances. Therefore, Pro Tax Accountant cannot be held liable for any errors, omissions, or inaccuracies published. The firm is not responsible for any losses, injuries, or damages arising from the display or use of this information.






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