GoSimpleTax > What is GoSimpleTax? > Features > Self Assessment features for UK expats and overseas residents > Declaring UK Pension Income When You Live Overseas

Declaring UK Pension Income When You Live Overseas

A complete guide to Self Assessment, the SA109 form, and filing from abroad with GoSimpleTax

Moving abroad doesn’t always end your UK tax responsibilities. If you’re a UK expat or overseas resident who still receives a UK pension, HM Revenue and Customs (HMRC) may expect you to report that income through Self Assessment. This can feel confusing when you’re thousands of miles away, juggling tax rules in two countries and navigating supplementary pages that the standard HMRC portal won’t even let you file.

Misunderstandings can lead to overpaying tax or facing non-compliance penalties, but declaring your overseas pension income doesn’t have to be a stressful administrative burden. GoSimpleTax was built to make this simpler, guiding UK taxpayers who live overseas through every step of declaring pension income so you stay compliant without the stress.

What Pension Income Do Overseas Residents Need to Declare?

If you’re a non-UK resident receiving a UK pension, you may still owe UK tax on it. UK pensions are generally classified as UK-sourced income, which means they can be subject to UK income tax regardless of where you live. This typically includes:

  • UK State Pension
  • Workplace pension income
  • Private or personal pension income
  • Annuities
  • Taxable lump sums
  • Tax already deducted by a pension provider through PAYE

Whether tax is actually due often depends on the Double Taxation Agreement (DTA) between the UK and the country where you now live. Some overseas taxpayers can be taxed in both the UK and their country of residence; a DTA may reduce or remove the UK tax due and decide where pension tax is ultimately payable.

You generally report this income on the SA100 main Self Assessment return. As a non-resident, you must also complete the SA109 (Residence, remittance basis etc.) supplementary page to confirm your residence status. Crucially, HMRC’s free online Self Assessment system does not support the SA109 form. To file it digitally, you need recognised commercial software like GoSimpleTax.

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What Is the SA109 Form and Why Does It Matter?

The SA109 is HMRC’s supplementary page for residence, remittance basis and related claims. It is crucial because it formally establishes your residence and domicile status for tax purposes, it tells HMRC exactly why you’re filing from abroad.

This matters because pension tax is not always based only on where the money is paid from. HMRC also needs to know where you live for tax purposes, whether you spent time in the UK, and whether a tax treaty affects your position. The SA109 helps determine whether you qualify for the UK Personal Allowance or are protected by a Double Taxation Agreement, and can record whether you’re claiming split-year treatment.

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Additional information overseas taxpayers need to provide

When submitting your tax return from outside the UK, you must provide specific details regarding your living situation and financial setup:

  • Your exact tax residence status – determined using the UK’s Statutory Residence Test (SRT).
  • Double Taxation Agreement (DTA) details – if your country of residence has a DTA with the UK, you may be able to claim relief or an exemption to avoid being taxed twice on the same pension income. You may also need to refer to HMRC help articles HS302 (Dual residency) and HS304 (Non-residents relief under Double Taxation Agreements).
  • The SA109 supplementary page itself – which cannot be submitted using HMRC’s standard free online filing portal and requires commercial software or a paper submission.

How GoSimpleTax Helps Overseas Taxpayers with Pension Income

Because HMRC’s free online filing software does not support the SA109 form, many overseas taxpayers assume they must hire an expensive UK accountant or rely on slow, unreliable international post. GoSimpleTax provides a fast, digital, and fully compliant alternative.

Submit the SA109 online without the paperwork

GoSimpleTax is commercial tax software fully recognised by HMRC. Unlike the standard government gateway, the platform lets you complete and digitally submit both your main SA100 return and the SA109 supplementary pages together, in one place, from anywhere in the world. There’s no need to print, post, or wait weeks for HMRC to process a paper return.

Guided pension income entry

GoSimpleTax gives you a clear place to add your State Pension, workplace pension, private pension, annuity income, and tax already deducted. The software then uses those figures in your Self Assessment calculation. This reduces the risk of common mistakes, such as entering net income instead of gross income, missing pension tax deducted, or forgetting a pension provider statement.

SA109 residency pages included when needed

If your answers show that you’re non-UK resident, dual resident, or claiming split-year treatment, GoSimpleTax helps you include the SA109 pages. You don’t need to download a separate PDF or work out where to attach it, the software asks plain-English questions and adds the relevant sections to your return.

Personal Allowance prompts for non-residents

Some non-residents can claim a UK Personal Allowance and others cannot, depending on nationality, country of residence, or the terms of a Double Taxation Agreement. GoSimpleTax helps you find the relevant residency and Personal Allowance sections so you can complete them correctly when they apply to your situation.

Real-time UK tax estimate

As you add pension income, tax deducted, allowances and other income, GoSimpleTax updates your estimated UK tax position in real time. You can see whether you may have tax to pay, whether tax already deducted has been included, and how your pension income affects your wider return – helping you avoid surprises and plan ahead for the 31 January payment deadline.

Error checking before you submit

Overseas tax returns can involve extra details. Missing your residence country, leaving out pension tax deducted, or failing to include the SA109 can delay your return. GoSimpleTax scans for missing information before you file, helping you submit accurately the first time and reducing the risk of being taxed twice.

Secure, cloud-based access from anywhere

Whether you’re enjoying retirement in Spain, working in Dubai, or living in Australia, you can log in to GoSimpleTax securely from any device. You can log your income throughout the tax year, upload your documentation, submit directly to HMRC instantly, receive confirmation of receipt, and keep all your records together in one cloud-based account.

What Our Users Say

Trustpilot

Simple, clean and reliable to use for landlords self assessment tax return when living overseas. This is my 3rd year of using it. It saves, totals and keeps all the data while you are completing the return, alerts you to any potential errors and upload to the HMRC website is completed without a hitch. You can also switch between current and previous years’ returns very easily

Janet

Great and easy to use for overseas resident having problems using HMRC online

Fb

I live overseas and use GoSimpleTax to file my HMRC returns for UK rental income I receive. The process couldn’t be simpler and I’m delighted with the service. I had a query this year and support agent Aiden emailed me back within minutes with the answer. Great service and great people.

Al

Great customer service and easy to use software. They were very helpful when I couldn’t work out how to do something and replied promptly to the online chat help service. Would recommend for anyone having to file an overseas tax return to the UK.

Rosemary

I’ve used GoSimpleTax for more than 10 years, letting me file my UK tax return from overseas with ease and accuracy. I continue to pay my annual subscription and am really happy with the ease of use and the outcome.

Elspeth

What Information Should Overseas Pension Taxpayers Have Ready?

Before you begin in GoSimpleTax, it helps to gather a few details. You’ll typically need:

  • Your Unique Taxpayer Reference (UTR)
  • Your National Insurance number, if you have one
  • Your overseas address and country of residence
  • The date you moved abroad, if this happened during the tax year (relevant for split-year treatment)
  • The number of days you spent in the UK during the tax year
  • Your UK State Pension amount
  • Workplace or private pension statements
  • P60s or pension provider tax summaries
  • Any UK tax already deducted at source from pension payments
  • Details of any foreign tax paid on the same pension income
  • Information needed to claim a UK Personal Allowance, if eligible

With these to hand, GoSimpleTax turns the information into a structured return. Instead of searching for the right HMRC box, you follow guided questions and review your tax summary as you go.

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Why Use GoSimpleTax for Overseas Pension Income?

  • Complete pension income in one account: Add State Pension, private pensions, annuities and tax deducted together.
  • Include SA109 when required: Report your overseas residence position alongside your SA100.
  • Avoid HMRC online filing limitations: Use HMRC-recognised software that supports non-resident Self Assessment filing.
  • See your estimate before filing: Understand your likely UK tax bill early and budget for the deadline.
  • Reduce errors and double taxation: Built-in checks highlight missing details and treaty-relief sections before submission.
  • File from anywhere: Submit to HMRC securely from overseas, with confirmation of receipt.
  • Keep records together: Store your pension and tax return information in one cloud account.
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Example: Retired abroad with a UK pension

Margaret lives in Portugal and receives a UK State Pension plus a small private pension from a UK provider. HMRC has asked her to file a UK Self Assessment return to report her pension income and confirm her non-resident position.

She can’t submit the SA109 through HMRC’s own online portal, and posting a paper return from Portugal feels slow and risky. Instead, she uses GoSimpleTax: she enters her pension figures, adds the tax already deducted by her pension provider, and completes the residency questions for the SA109.

GoSimpleTax shows her estimated UK tax position, flags any missing details, and submits the completed SA100 and SA109 together to HMRC online – no printing, no posting from Portugal, and no calculating each section by hand.

Case Study: David’s over-taxed pension

The problem: David retired to Portugal three years ago and receives a UK civil service pension. He realised he was being taxed on his pension income in both the UK and Portugal. When he tried to log into the HMRC portal to rectify his residence status, he found he couldn’t submit the required SA109 form online through the government site – leaving him facing either a £600 accountant fee or mailing paper forms across Europe.

The GoSimpleTax solution: David signed up for GoSimpleTax, which prompted him to add the SA109 section alongside his standard return. He entered his Portuguese residency details and claimed relief under the UK-Portugal Double Taxation Agreement.

The outcome: GoSimpleTax automatically calculated his correct tax liability, removing the double-taxation burden. David submitted his complete tax return digitally in under an hour, saved hundreds of pounds in accountant fees, and gained peace of mind that his expat tax obligations were fully up to date.

Frequently asked questions

Ready to File Your Overseas Pension Income?

Declaring a UK pension from abroad doesn’t have to mean paperwork and uncertainty, especially when SA109, Personal Allowance rules and double taxation questions are involved. GoSimpleTax brings the SA100, SA109 and your tax calculations together in one simple, secure, HMRC-recognised tool. Add your pension income, complete the residency form, review your tax estimate, and file your complete Self Assessment return online with confidence.

Start your free trial of GoSimpleTax today

Still not sure if GoSimpleTax is right for you? Speak with the team by emailing [email protected].

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