How to report overseas income in a UK tax return

Katerina Galkina · EN · 07/10/2026

Establish residence and classify receipts

Start with tax residence for the particular year, including possible split-year treatment. Then separate overseas wages, rent, interest, dividends, pensions and asset disposals. Different sources need different sections and calculations.

A foreign bank account or overseas employer does not automatically make every receipt foreign-source income. If you physically perform work in the UK, check the UK obligations arising from that work separately. Transferring existing savings between your own accounts also differs from receiving new wages or interest. Do not put every incoming transfer into one tax category.

Collect evidence by source

For each source, keep contracts, payslips or annual certificates, statements, payment details, foreign tax deductions and dates. Rental calculations need income and supported expenses. Investments need payment and transaction records rather than just the broker’s current balance.

Create a table showing currency, gross income, tax and net receipts. Prepare sterling calculations and retain exchange rates and the method used. Converting everything at the rate on the filing date is not a universal solution. Where the foreign tax year differs, map the periods to the UK tax year and check allocation.

Review current reliefs

The FIG regime ↗ replaced the remittance basis from 6 April 2025. It is available to qualifying residents within their first four UK-resident tax years following at least ten years of non-residence. Relief requires a claim; leaving money overseas does not establish entitlement.

Not every source qualifies. Foreign employment earnings do not receive ordinary FIG income relief; a separate regime may apply to certain overseas workdays. Claiming FIG also removes specified tax allowances. Compare the full annual outcome, including UK income, before choosing to claim.

Account for foreign tax

HMRC explains double-taxation relief ↗. Paying tax abroad does not automatically eliminate UK liability. Check the agreement for the country concerned, entitlement to credit and the credit limit. Keep evidence of tax actually paid and any later refunds.

Do not deduct the same foreign tax twice, as both an expense and a credit, unless an applicable rule permits it. If countries classify the income or residence differently, obtain a specific calculation rather than copying the foreign return’s figure without review.

Submit the complete return

Use the foreign-income reporting guidance ↗ and notes for the relevant year. Overseas employment, gains and residence can require different supplementary pages. Check that your filing method supports every section needed.

Before filing, reconcile gross income, currency conversion, reliefs and foreign tax credit with the documents. Keep the draft, submission receipt and payment calculation. If income was omitted, check the amendment process: a new bank transfer cannot correct an earlier tax return.