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What is Additional Information Form SA101?

Updated: Aug 13


If you are a UK taxpayer, you may have heard about the Additional Information Form SA101. But what is it, and why do you need to fill it out? In this article, we will delve into the details of the SA101 form, its purpose, and the information it requires.


The SA101 form is a supplementary document used alongside the main Self Assessment tax return (SA100) in the UK. It serves to provide HM Revenue and Customs (HMRC) with additional details on less common income sources, deductions, and reliefs that do not fit within the main tax return form.


What is Additional Information Form SA101


What is the SA101 Form?

The SA101 form is a supplementary form that must be completed and submitted along with your Self-Assessment tax return. It is used to provide additional information that is not included in the main tax return but is necessary to calculate your tax liability correctly.


The form can be used to declare various sources of income, such as self-employment, rental income, and overseas income. It can also be used to claim certain tax reliefs, such as pension contributions or charitable donations.


Thus SA101 form in the UK is a supplementary document used in conjunction with the main Self Assessment tax return, form SA100. It's designed for individuals who need to report additional types of income, deductions, and tax reliefs that are not covered in the main SA100 form.


Purpose and Utility of the SA101

This form is pivotal for taxpayers who have complex financial records or need to declare income and deductions that are not typical. These include foreign dividends, gains from life insurance policies, and income from various types of trusts. It's also used for reporting losses carried forward, non-resident capital gains, and relevant tax avoidance schemes, ensuring comprehensive tax liability assessments and compliance with UK tax regulations.


Who Needs to File the SA101?

Typically, the SA101 form is required for individuals with diverse income sources or those seeking to claim less common tax reliefs. This could include self-employed individuals with varied business activities, taxpayers with foreign income, or those involved in investment activities that fall outside standard employment income declarations. It's also vital for those who need to report multiple tax reliefs or adjustments which are not covered in the SA100 form​


Key features of the SA101 form include:

  1. Diverse Income Sources: It allows taxpayers to declare various income sources such as income from gilt-edged and other UK securities, life insurance policy gains, stock dividends, and income from share schemes.

  2. Tax Reliefs and Deductions: The form provides sections for claiming tax reliefs related to investments in Venture Capital Trusts (VCTs), Enterprise Investment Schemes (EIS), maintenance payments, and annual payments qualifying for tax relief.

  3. Special Circumstances: It includes provisions for reporting income or gains in special circumstances, such as business receipts taxed in an earlier year, post-employment income, and redundancy payments.

  4. Married Couple’s Allowance: Taxpayers can claim Married Couple’s Allowance if applicable, providing details such as their spouse’s or civil partner’s information.

  5. Losses and Pension Contributions: The SA101 form is used to report income tax losses, limits on income tax reliefs, pension savings tax charges, and any involvement in tax avoidance schemes.

  6. Additional Financial Information: It allows for the declaration of other financial information that might be relevant for accurate tax calculation but is not covered in the main SA100 form.


The SA101 form is particularly useful for individuals with complex financial situations or multiple sources of income, ensuring they can fully comply with UK tax laws by reporting all relevant information for tax assessment. It's an essential tool for comprehensive and accurate tax reporting, helping taxpayers to provide a complete picture of their finances to HM Revenue and Customs (HMRC).



What Information Is Required On The SA101 Form?

Completing the SA101 form requires careful consideration to ensure all necessary information is accurately captured. Here is a detailed walkthrough of the typical sections and entries you will need to complete:


Personal Information:

This section is straightforward, requiring details such as your name, National Insurance number, and Unique Taxpayer Reference (UTR). This information links your supplementary details with your main tax return.


Income Details:

  • Foreign Income: If you have income from abroad, such as foreign dividends or savings interest, this needs to be declared here.

  • Partnership Income: For those in a partnership, details about income distributions must be reported.

  • Trust Income: Any income received from trusts, whether in the UK or abroad, should be listed, with specifics about the type of trust and the amount received.


Deductions and Tax Reliefs:

  • Losses Carried Forward: If you have losses from previous years that you wish to carry forward to offset against current year gains, these need to be detailed here.

  • Charitable Donations: Contributions to charities that qualify for Gift Aid or other tax reliefs should also be included.


Less Common Reliefs:

  • Venture Capital Trusts (VCT): If you have invested in VCTs, the amount and details of the investment must be reported.

  • Enterprise Investment Scheme (EIS) and Seed Enterprise Investment Scheme (SEIS): Details of investments under these schemes, including the amount and the companies invested in, should be recorded.


Tax Avoidance Schemes:

  • If applicable, any involvement in tax avoidance schemes must be declared, including the scheme reference number and the amounts involved.


Supporting Documents and Evidence

When filling out the SA101, it is crucial to keep detailed records and supporting documents for all entries. This includes bank statements, dividend vouchers, partnership agreements, and receipts for charitable donations. Having these documents at hand can help ensure that all entries are accurate and verifiable, which is important in case of any inquiries or audits from HMRC.



How to Fill Different Sections of the SA101 Form

The SA101 form, known as the "Additional Information" form, is used to report less common types of income, deductions, and tax reliefs not included in the main SA100 tax return. It’s crucial to ensure that this form is completed accurately to avoid any potential issues with HM Revenue and Customs (HMRC). Below is a detailed step-by-step guide on how to fill out the SA101 form, including all the questions and suggested sample answers.


1. Other UK Income

This section covers income from gilt-edged securities, deeply discounted securities, and accrued income profits.


  • Question 1: Gilt etc. interest after tax taken offSample Answer: £0.00Enter the amount of interest received from gilt-edged securities after tax has been deducted. If no such income was received, enter £0.00.

  • Question 2: Tax taken offSample Answer: £0.00Indicate the amount of tax that was deducted from the interest in question 1. If no tax was taken off, enter £0.00.

  • Question 3: Gross amount before taxSample Answer: £0.00Report the gross amount of interest before any tax was deducted. Again, if this doesn’t apply, enter £0.00.


2. Gains from Life Insurance Policies, Capital Redemption Policies, and Life Annuity Contracts

This section applies to gains made from various insurance policies and contracts.


  • Question 4: UK policy or contract gains on which tax was treated as paid

  • Sample Answer: £0.00Enter the amount of gain from UK life insurance policies or contracts where tax has already been accounted for.

  • Question 5: Number of years the policy has been held or since the last gain

  • Sample Answer: 0Provide the number of years the policy has been held or the period since the last gain. If not applicable, enter 0.

  • Question 6: UK policy or contract gains where no tax was treated as paid

  • Sample Answer: £0.00Enter gains from UK policies or contracts where tax hasn’t been treated as paid.

  • Question 7: Number of years the policy has been held or since the last gain

  • Sample Answer: 0Similar to question 5, enter the number of years the policy has been held.

  • Question 8: UK policy or contract gains from voided ISAs

  • Sample Answer: £0.00Report any gains from ISAs that were voided.

  • Question 9: Number of years the policy was held

  • Sample Answer: 0Indicate the number of years the ISA or policy was held before being voided.

  • Question 10: Tax taken off gain shown in box 8

  • Sample Answer: £0.00Enter the amount of tax taken off from the gains reported in box 8.

  • Question 11: Deficiency relief

  • Sample Answer: £0.00Report any deficiency relief claimed on the gains.


3. Stock Dividends, Bonus Issues of Securities, and Redeemable Shares

This section deals with income received from stock dividends and similar sources.


  • Question 12: Stock dividends – the amount received

  • Sample Answer: £0.00Enter the total amount of stock dividends received.

  • Question 13: Bonus issues of securities and redeemable shares

  • Sample Answer: £0.00Report any bonus issues of securities or redeemable shares received.

  • Question 13.1: Close company loans written off or released

  • Sample Answer: £0.00If any loans from a close company were written off or released, report the amount here.


4. Business Receipts Taxed as Income of an Earlier Year

This section is for post-cessation receipts and other business-related income that needs to be taxed in a previous year.


  • Question 14: The amount of post-cessation or other business receipts

  • Sample Answer: £0.00Enter the total amount of post-cessation or other business receipts that need to be taxed as income of an earlier year.

  • Question 15: Tax year income to be taxed

  • Sample Answer: 2022-23Indicate the tax year in which the income should be taxed.


5. Share Schemes and Employment Lump Sums, Compensation and Deductions, Certain Post-Employment Income, and Patent Royalty Payments

This section deals with income from share schemes, certain post-employment income, and other related income sources.


  • Question 1: Share schemes – the taxable amount

  • Sample Answer: £0.00Report the taxable amount from share schemes, excluding amounts included on your P60 or P45.

  • Question 3: Taxable lump sums and certain income after the end of your job

  • Sample Answer: £0.00Enter any taxable lump sums or income received after the end of your employment, excluding redundancy or compensation for job loss.

  • Question 4: Lump sums or benefits received from an Employer Financed Retirement Benefits Scheme

  • Sample Answer: £0.00Report any lump sums or benefits received from such a scheme, excluding pensions.

  • Question 5: Redundancy, other lump sums, and compensation payments – the amount above the £30,000 exemption

  • Sample Answer: £0.00Enter the amount of redundancy or compensation payments above the £30,000 exemption.

  • Question 6: Tax taken off boxes 3 to 5

  • Sample Answer: £0.00Report the amount of tax taken off from the income reported in boxes 3 to 5.

  • Question 7: If you’ve left box 6 blank because the tax is included in box 2 on the ‘Employment’ page, put ‘X’ in the box

  • Sample Answer: XIf applicable, mark this box with an 'X'.

  • Question 8: Exemptions for amounts entered in box 4

  • Sample Answer: £0.00Enter any exemptions that apply to the amounts reported in box 4.

  • Question 9: Compensation and lump sums up to £30,000 exemption

  • Sample Answer: £0.00Report any compensation or lump sums that fall under the £30,000 exemption.

  • Question 10: Disability and foreign service deduction

  • Sample Answer: £0.00Enter any deductions claimed for disability or foreign service.

  • Question 11: Seafarers’ Earnings Deduction – enter pay on your ‘Employment’ page

  • Sample Answer: £0.00Report any seafarers’ earnings deduction, ensuring the pay is entered on your Employment page.

  • Question 12: Foreign earnings not taxable in the UK

  • Sample Answer: £0.00Enter any foreign earnings that are not taxable in the UK.

  • Question 13: Foreign tax for which tax credit relief not claimed

  • Sample Answer: £0.00Report any foreign tax for which you have not claimed tax credit relief.

  • Question 14: Exempt employers’ contributions to an overseas pension scheme

  • Sample Answer: £0.00Enter any exempt employer contributions to an overseas pension scheme.

  • Question 15: UK patent royalty payments made

  • Sample Answer: £0.00Report any UK patent royalty payments made.


6. Other Tax Reliefs

This section covers various tax reliefs that may apply.


  • Question 1: Subscriptions for Venture Capital Trust shares – the amount on which relief is claimed

  • Sample Answer: £0.00Enter the amount for which relief is claimed on Venture Capital Trust shares.

  • Question 2: Subscriptions for Enterprise Investment Scheme shares – the amount on which relief is claimed

  • Sample Answer: £0.00Report the amount for which relief is claimed under the Enterprise Investment Scheme.

  • Question 3: Community Investment Tax Relief – the amount on which relief is claimed

  • Sample Answer: £0.00Enter the amount for which Community Investment Tax Relief is claimed.

  • Question 4: Annual payments made

  • Sample Answer: £0.00Report any annual payments made that are eligible for tax relief.

  • Question 5: Qualifying loan interest payable in the year

  • Sample Answer: £0.00Enter the amount of qualifying loan interest paid during the year.

  • Question 6: Post-cessation trade relief and certain other losses

  • Sample Answer: £0.00Report any post-cessation trade relief and other eligible losses.

  • Question 6.1: Pre-incorporation losses

  • Sample Answer: £0.00Enter any pre-incorporation losses claimed.

  • Question 7: Maintenance payments (up to £4,010)

  • Sample Answer: £0.00Enter maintenance payments made, if applicable.

  • Question 8: Payments to a trade union for death benefits

  • Sample Answer: £0.00Report half of the payments made to a trade union for death benefits (maximum £100).

  • Question 9: Relief claimed on a qualifying distribution on the redemption of bonus shares or securities

  • Sample Answer: £0.00Enter any relief claimed on qualifying distributions from the redemption of bonus shares or securities.

  • Question 10: Subscriptions for shares under the Seed Enterprise Investment Scheme

  • Sample Answer: £0.00Report any subscriptions made under the Seed Enterprise Investment Scheme for which relief is claimed.


7. Other Information

This section includes information on income tax losses and the limit on income tax relief.


  • Question 1: Earlier years’ losses – which can be set against certain other income in 2023–24

  • Sample Answer: £0.00Enter any earlier years' losses that can be set against income in 2023–24.

  • Question 2: Total unused losses carried forward

  • Sample Answer: £0.00Report the total amount of unused losses carried forward.

  • Question 3: Relief now for 2024–25 trade losses or certain capital losses

  • Sample Answer: £0.00Enter the amount of relief claimed for 2024–25 trade losses or certain capital losses.

  • Question 4: Enter the amount of relief shown in box 3 which is not subject to the limit on Income Tax reliefs

  • Sample Answer: £0.00Report the amount of relief from box 3 that is not subject to the income tax relief limit.

  • Question 5: Tax year for which you’re claiming relief in box 3

  • Sample Answer: 2023-24Enter the tax year for which the relief is being claimed.


8. Limit on Income Tax Relief

This section is related to payroll giving and the limit on income tax relief.

  • Question 6: Amount of payroll giving

    Sample Answer: £0.00


By following the above steps and entering the appropriate information, you can accurately complete the SA101 form. Always ensure that the information entered is correct to avoid any discrepancies with HMRC. If in doubt, consult with a tax professional to ensure all details are accurately reported.


How Do You Submit The SA101 Form?

If you're a UK taxpayer and need to fill out the Additional Information Form SA101, you may be wondering how to submit it. In this article, we'll walk you through the steps you need to take to submit the SA101 form in the UK.


Submitting the SA101 Form


Final Steps in the Submission Process

Submitting the SA101 form is the last step in ensuring your tax return is comprehensive and compliant with HMRC requirements. This section will guide you through the submission options and provide tips to ensure the process is smooth and error-free.


Online Submission

The majority of taxpayers now opt for online submission due to its convenience and efficiency. You can start the process and find more detailed instructions on HMRC's website here: Sign in to HMRC online services and for setting up an account, you can follow the instructions on this page: Set up an account for HMRC online services:


  • Accessing the Form: Log into your HMRC online account and navigate to the Self Assessment section where you can access the SA101 form.

  • Filling Out the Form Online: You can fill out the form directly on the HMRC website, which also provides prompts and help notes to assist you in entering accurate information.

  • Submission with SA100: Once completed, the SA101 form should be submitted alongside your main SA100 tax return. The online system will guide you through attaching the SA101 form to your tax return.


Submission by Post

For those who prefer or need to submit paper forms:

  • Downloading and Printing the Form: The SA101 form can be downloaded from the HMRC website. Ensure you print the latest version of the form for the current tax year.

  • Completing the Form: Fill out the form with a pen, following the same detailed guidance applicable to the online form.

  • Mailing the Form: Send the completed form to the appropriate HMRC address, which can be found on their website. Make sure it is sent well before the deadline to avoid delays and potential penalties.


If you live in the UK, send to:

Self Assessment HM Revenue and Customs

BX9 1AS

United Kingdom


If you live outside the UK, send to:

HM Revenue and Customs

Benton Park View

Newcastle Upon Tyne

NE98 1ZZ

United Kingdom


Deadlines and Penalties

It is crucial to adhere to the submission deadlines set by HMRC:

  • Deadline for Online Submission: January 31st following the end of the tax year.

  • Deadline for Paper Submission: October 31st following the end of the tax year. Failing to meet these deadlines can result in late filing penalties, and incorrect or incomplete forms can lead to further inquiries or audits from HMRC.


After Submission

Once submitted, you should receive confirmation from HMRC that your tax return, including the SA101 form, has been received:


  • Acknowledgment of Receipt: If submitted online, you'll receive an immediate electronic confirmation. For paper submissions, confirmation may take longer.

  • Corrections and Amendments: If you realize there are mistakes in your submission, you can amend your tax return. The process for this varies slightly between online and paper filings but generally allows for corrections within 12 months of the original deadline.


The SA101 form is an essential tool for many taxpayers in the UK, providing a means to report additional types of income and deductions not covered by the standard SA100 form. Accurately completing and timely submitting the SA101 can prevent tax issues and ensure you are paying the correct amount of tax. Always consider seeking professional advice if your tax situation is complex or if you are unsure about any aspects of your tax return. By following the guidelines outlined above, you can navigate the process of completing and submitting the SA101 form confidently and efficiently.


When to Submit Your SA101 Form

The deadline for submitting your SA101 form is the same as the deadline for submitting your main tax return. For most taxpayers, this is 31 January following the end of the tax year.


However, if you are submitting your tax return and SA101 form by post, you will need to allow plenty of time for them to be delivered to HMRC. It is recommended that you send your forms by registered post or recorded delivery, to ensure that they arrive safely. If you miss the deadline for submitting your tax return and SA101 form, you may be subject to penalties and fines. Therefore, it is important to make sure that you submit your forms on time and in the correct format.


Professional Help for Submitting Self-Assessment Returns and Additional Information with it like SA101 FORM


Why is it a Good Idea to Use Professional Help for Submitting Self-Assessment Returns and Additional Information with it like SA101 FORM?

Submitting your Self-Assessment tax return can be a stressful and time-consuming process, especially if you have additional information to include, such as the SA101 form. That's why many taxpayers choose to use professional help when submitting their tax returns. In this article, we'll explore some of the reasons why it's a good idea to use professional help when submitting your Self-Assessment returns and additional information like the SA101 form in the UK.


Avoiding Mistakes and Penalties

One of the main reasons why it's a good idea to use professional help when submitting your Self-Assessment tax returns is to avoid making mistakes that could result in penalties and fines. Professional tax advisors are trained to understand the complex rules and regulations that govern tax returns, and they can help you to navigate these rules and regulations to ensure that your tax returns are accurate and complete.


Submitting an incorrect tax return or failing to include additional information like the SA101 form can result in penalties and fines, which can be costly and time-consuming to deal with. By using professional help, you can avoid these mistakes and ensure that your tax returns are submitted correctly and on time.


Saving Time and Effort

Submitting a Self Assessment tax return can be a time-consuming process, especially if you have additional information to include like the SA101 form. By using professional help, you can save time and effort and free up your valuable time to focus on other aspects of your business or personal life.


Professional tax advisors can handle all aspects of the tax return process, from gathering the necessary information to completing the forms and submitting them on your behalf. This can save you a significant amount of time and effort, and ensure that your tax returns are submitted on time and without any errors.


Maximizing Tax Savings

Another benefit of using professional help when submitting your Self Assessment tax returns is that you can maximize your tax savings. Professional tax advisors have a deep understanding of the tax system and can identify opportunities for tax savings that you may not be aware of.


For example, they can help you to claim all the tax relief you are entitled to, such as deductions for business expenses, charitable donations, and pension contributions. They can also help you to structure your business or investments in a tax-efficient way so that you can minimize your tax liability.


Reducing Stress and Anxiety

Submitting a Self-Assessment tax return can be a stressful and anxiety-inducing process, especially if you're not familiar with the tax system. By using professional help, you can reduce your stress and anxiety levels and ensure that your tax returns are submitted correctly and on time.


Professional tax advisors can handle all aspects of the tax return process, from gathering the necessary information to submitting the forms and dealing with any queries or issues that may arise. This can take the pressure off you and allow you to focus on other aspects of your life and business.


Getting Expert Advice and Support

Finally, using professional help when submitting your Self Assessment tax returns can give you access to expert advice and support. Professional tax advisors are trained to understand the tax system and can provide you with tailored advice and support that is specific to your needs and circumstances.


They can answer any questions you may have about the tax system, and help you to plan and prepare for future tax returns. They can also provide you with ongoing support and advice throughout the year so that you can stay on top of your tax affairs and minimize your tax liability.


Submitting your Self Assessment tax returns and additional information like the SA101 form can be a complex and time-consuming process. By using professional help, you can avoid mistakes, save time and effort, maximize tax savings, reduce stress and anxiety, and get expert advice and support.


If you're considering using professional help when submitting your tax returns, it's important to choose a reputable and experienced tax advisor like Pro Tax Accountant, who can provide you with the most professional service based on vast experience and high professional skills.



20 Most Important FAQs about SA101 Form


1. Q: What is the deadline for submitting the SA101 form?

A: The deadline typically aligns with the Self-Assessment tax return deadline, which is 31 January following the end of the tax year.


2. Q: Can I amend the SA101 form after submission?

A: Yes, amendments can be made by logging into your HMRC account or by submitting a revised form if you filed by post.


3. Q: Is the SA101 form mandatory for all taxpayers?

A: No, it's only required if you have additional income or deductions not covered in the main SA100 tax return.


4. Q: How do I know if I need to fill out the SA101 form?

A: You should fill it out if you have complex financial situations or multiple income sources not declared in the main tax return.


5. Q: Are there penalties for not submitting the SA101 form?

A: Yes, failing to submit necessary information can result in penalties and fines from HMRC.


6. Q: Can I file the SA101 form electronically?

A: Yes, it can be filed online through your HMRC Self-Assessment account.


7. Q: What should I do if I don't understand how to complete the SA101 form?

A: Seek advice from a tax professional or refer to HMRC's guidance notes for assistance.


8. Q: Is there a charge for filing the SA101 form?

A: No, there is no additional charge for filing the SA101 form with your Self-Assessment tax return.


9. Q: How do I declare foreign income on the SA101 form?

A: Foreign income is declared in the relevant sections of the form, along with any foreign tax paid.


10. Q: Can I use the SA101 form to claim tax relief on charitable donations?

A: Yes, the form includes sections for claiming various tax reliefs, including charitable donations.


11. Q: What happens if I make an error on the SA101 form?

A: You should correct the error as soon as possible by amending the form either online or by post.


12. Q: Do I need to keep records of the information provided in the SA101 form?

A: Yes, it's important to keep records in case HMRC requires proof or clarification.


13. Q: How detailed does the information on the SA101 form need to be?

A: Provide accurate and detailed information for each section relevant to your financial situation.


14. Q: Can I submit the SA101 form separately from my SA100 form?

A: No, the SA101 form should be submitted alongside your main Self-Assessment tax return.


15. Q: What if I have income sources not listed on the SA101 form?

A: Consult with a tax professional or HMRC for guidance on how to declare such income.


16. Q: Can I claim Married Couple’s Allowance on the SA101 form?

A: Yes, there is a section on the form for claiming Married Couple’s Allowance.


17. Q: How do I report income from trusts on the SA101 form?

A: Income from trusts should be reported in the relevant section of the form, with details of the income received.


18. Q: What should I do if I need more space to provide information on the SA101 form?

A: Attach additional sheets if necessary, ensuring they are clearly marked and referenced to the relevant section.


19. Q: Can I file the SA101 form if I’m not a resident in the UK?

A: Yes, if you have UK income that needs to be declared, you can file the SA101 form.


20. Q: How do I declare pension contributions on the SA101 form?

A: Pension contributions are declared in the section for tax reliefs and deductions on the form.

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