Foreign Rental Income and UK Tax: The SA106, Expenses and Foreign Tax Credit Relief

Yes. If you are UK tax resident, you are taxable on your overseas rental profits whether or not you bring the money to the UK. Overseas property income is charged to UK income tax as the profits of an overseas property business, in the same way that UK lets are charged. The fact that the rent sits in a foreign bank account, is reinvested abroad, or is taxed in the country where the property sits makes no difference to whether it is taxable here.

There is one main exception: a recent arrival who qualifies for the 4-year FIG regime can claim to exclude qualifying foreign income, including overseas rent, from UK tax for up to their first four years of residence. We cover the FIG regime in detail below. If you do not qualify for, or do not claim, FIG, your foreign rental profit is fully within the UK net and must be reported.

Your residence status drives everything here, so confirm it under the Statutory Residence Test before you decide how to report. If you are non-resident, the position flips: you are generally taxed only on UK-source income, and overseas rent falls outside UK tax entirely.

Foreign rental income is reported on the SA106 foreign supplementary pages, in the property section. The SA106 is filed with your SA100 main Self Assessment return and is never submitted on its own. If you also let UK property, that goes on the separate SA105 UK property pages, and the two are kept apart.

On the SA106 you enter the total rents from your overseas lets, the allowable expenses, any foreign tax paid, and your claim for Foreign Tax Credit Relief. Convert foreign-currency figures into sterling using a consistent and reasonable exchange-rate basis (for example HMRC's published average rates) and keep your workings.

One ordering point catches people out: if you are claiming the FIG regime, you make that claim through the FIG pages and Helpsheet HS266, and the residence pages (SA109) are usually in play too. We map the right combination of pages to your facts before filing rather than guessing form by form.

All your let overseas properties are pooled into a single overseas property business. You add together the rental income from every overseas let, deduct all the allowable expenses across them, and arrive at one net profit or loss. You do not compute each property separately for the income-tax charge, so a loss on one overseas property can be set against a profit on another in the same year because they sit in the same pool.

Note the change from 6 April 2025. The Furnished Holiday Lettings (FHL) regime was abolished from that date, and with it the old distinction between EEA and non-EEA holiday lets. Former EEA FHLs used to be reported with UK property and given special treatment; from 2025/26 onwards there is no separate FHL category and no EEA pooling rule. Everything overseas simply forms part of one ordinary overseas property business reported on the SA106.

You deduct the expenses incurred wholly and exclusively for the overseas letting, on the same principles as a UK let. The headline categories are familiar.

• Letting agent, property management and advertising fees.
• Insurance on the building and contents used in the letting.
• Repairs and maintenance that restore the property (but not improvements, which are capital).
• Local property taxes, service charges and ground rent paid abroad.
• Utilities and council-equivalent charges you bear as landlord.
• Accountancy and professional fees relating to the rental business.

Mortgage interest is treated differently and is covered in the next section. As with UK property, you cannot deduct the cost of buying or improving the property against rental income: those are capital costs relevant to a future capital gains computation, not the annual rental figure.

Mortgage interest and other residential finance costs on overseas property are not deducted in full from rent. The same restriction that applies to UK residential lets applies to overseas residential lets: relief is limited to a basic-rate (20%) tax reduction rather than a full deduction against profits. HMRC's guidance is explicit that the restriction applies to a UK or overseas property business alike.

In practice, your taxable rental profit is calculated without deducting the finance costs, and you then take a tax reducer equal to 20% of the allowable finance costs. If the relief cannot all be used in the year (for example because profits are low), the excess finance cost is carried forward to set against future years. The cash effect is most noticeable for higher-rate and additional-rate taxpayers, who no longer get 40% or 45% relief on their interest.

If the country where your property sits also taxes the rent, you can usually claim Foreign Tax Credit Relief (FTCR) so the same income is not taxed twice. The credit is the lower of the foreign tax actually paid on that income and the UK tax due on that same income. It is worked out source by source, so the foreign tax on your rent is credited against the UK tax on your rent, not against your whole bill.

Two consequences follow. First, if the foreign tax rate is higher than your UK rate on that income, the credit is capped at the UK figure and the excess is not repaid by HMRC. Second, you must compute the foreign tax correctly: only foreign tax properly due under the other country's law and any double tax treaty qualifies, so over-paid foreign tax should be reclaimed locally rather than credited here. Helpsheet HS263 sets out the mechanics.

Here is how the figures flow in practice. Assume a UK higher-rate taxpayer who lets one apartment in Spain for the 2026/27 year and does not qualify for the FIG regime. The figures are illustrative, kept simple and rounded for clarity.

• Rent received (converted to sterling): GBP 18,000.
• Allowable expenses (agent, insurance, repairs, local taxes): GBP 5,000.
• Mortgage interest (finance cost, restricted): GBP 4,000.
• Spanish tax already paid on this rental income: GBP 1,500.

Step 1: taxable rental profit is rent minus ordinary expenses, with interest excluded from the deduction. That is GBP 18,000 minus GBP 5,000, equals GBP 13,000.

Step 2: UK tax on the profit at the 40% higher rate is GBP 13,000 times 40%, equals GBP 5,200.

Step 3: the finance-cost tax reducer is 20% of the GBP 4,000 interest, equals GBP 800. UK tax after the interest reducer is GBP 5,200 minus GBP 800, equals GBP 4,400.

Step 4: Foreign Tax Credit Relief is the lower of the Spanish tax paid (GBP 1,500) and the UK tax on this income (GBP 4,400), so GBP 1,500 is credited. The UK tax actually payable is GBP 4,400 minus GBP 1,500, equals GBP 2,900. The Spanish tax has not been wasted, and the income has not been taxed twice. This ignores the Personal Allowance and other income, which would be set in the context of your full return.

An overseas property loss can only be used against future overseas property profits. If your pooled overseas property business makes a loss, that loss is ring-fenced: it is carried forward automatically and set only against future profits of the same overseas property business. You cannot set an overseas property loss against UK property profits, against employment income, or against other income, and the reverse is also true.

This is why we keep clean, separate records for UK and overseas lettings. Pooling losses correctly within the overseas business, and tracking the carried-forward figure year to year on the SA106, can be worth real money once the property returns to profit.

A qualifying new resident can use the 4-year FIG regime to take overseas rent out of UK tax for their first four years here. The regime, introduced from 6 April 2025, replaced the old remittance basis for non-doms. A qualifying claimant can exclude foreign income, including overseas rental income arising on or after 6 April 2025, from UK tax for up to their first four tax years of UK residence. Broadly, you qualify if you become UK resident after at least ten consecutive tax years of non-UK residence.

If you validly claim FIG, your foreign rent for the year is not charged to UK tax, so the question of expenses, the interest restriction and Foreign Tax Credit Relief on that income does not arise in the same way. A FIG claim is made through the return and Helpsheet HS266, and there are trade-offs (for example losing the Personal Allowance in a year you claim), so it is a decision to model rather than assume. The full eligibility mechanics go beyond rental income, and we check them against your residence history before claiming.

If you have let overseas property without reporting the income, put it right through the Worldwide Disclosure Facility (WDF), which remains the current channel for disclosing a UK tax liability connected to an offshore matter. Making an unprompted disclosure before HMRC contacts you almost always produces a better outcome than waiting.

Offshore non-compliance is treated seriously. The Failure to Correct rules and higher offshore penalty regime mean penalties on undeclared offshore income can be substantially larger than for purely domestic errors, and HMRC receives data on overseas accounts and properties through international information exchange. A careful WDF disclosure, with the years, profits, foreign tax and any FTCR computed properly, limits the penalty and closes the exposure. We handle these disclosures regularly and quantify the likely settlement before you commit.

We take the SA106 off your plate end to end. We prepare the foreign pages, compute the pooled overseas property business, apply the finance-cost restriction correctly, claim Foreign Tax Credit Relief source by source, and advise whether a FIG claim is the right call for new arrivals. Where there is undeclared rent, we run the Worldwide Disclosure Facility process from first disclosure to settlement.

Everything is done on a fixed fee agreed upfront, so you know the cost before we start. If you let property abroad and want certainty about your UK position for 2026/27, book a call and we will map it out.