The UK’s Tax on Foreign Income: What You Need to Declare?

In the UK, tax on foreign income depends on various factors, including your tax residency status and type of income. 

If you live in the UK and receive income from overseas, working out what you need to report to HMRC can be confusing. 

Foreign income can come from many sources, and the rules have changed significantly in recent years.

This guide explains what foreign income is, when it needs to be declared, and how to stay compliant with HMRC. 

Key points

• Tax residency determines what you pay tax on 🌍
  Your UK tax bill depends mainly on whether you’re a UK tax resident. Residents are taxed on worldwide income, while non-residents are taxed only on UK-sourced income.
• Residency is decided by the Statutory Residence Test 📍
  HMRC assesses factors like days spent in the UK, work location, home ties, and family connections. Moving during a tax year can result in split-year treatment, which divides tax responsibilities across two periods.
• Major 2025 reform replaced the remittance basis 🔄
  From 6 April 2025, the old non-domiciled remittance basis was abolished. It’s been replaced with a residence-based Foreign Income and Gains regime, which may offer limited relief for qualifying new UK residents.
• Foreign income is taxable, but reliefs can reduce what you owe 💰
  Overseas income is usually taxed alongside UK income using the same bands. However, allowances and reliefs like the Personal Allowance, Dividend Allowance, Foreign Tax Credit Relief, and double taxation agreements can reduce or offset tax.
• Reporting foreign income correctly is essential, and ANNA can help 🚀
  Most foreign income has to be declared through Self Assessment, along with detailed records of income, expenses, and exchange rates. ANNA can simplify this process by automatically categorising transactions, storing documents, and helping you stay organised for tax filing.

What counts as foreign income?

The source of the income matters more than where the money is paid. For example, rent from a property in France is foreign income even if it's deposited into a UK business account.

Likewise, interest earned from a savings account held with a bank overseas is generally treated as foreign income regardless of where you live.

Common examples include:

• Salary earned from an overseas employer
• Freelance or consulting income generated abroad
• Rental income from overseas property
• Interest from foreign savings accounts
• Dividends from non-UK companies
• Income from overseas investment funds
• Foreign pensions
• Income received from overseas trusts or estates

Why tax residency matters

When it comes to foreign income, your tax residency status is often more important than your nationality or citizenship.

If you're considered a UK tax resident, you'll usually be taxed on your worldwide income. That means HMRC may expect you to declare income earned both inside and outside the UK.

If you're not a UK tax resident, you'll typically only pay UK tax on certain UK-sourced income.

Residence status is determined using the Statutory Residence Test. This takes into account factors such as:

• How many days you spend in the UK
• Whether you have a home in the UK
• Whether you work in the UK
• Which connections you have to the UK

The rules can become complicated if you move into or out of the UK during a tax year. In some cases, split-year treatment may apply. This means you're treated as a UK resident for part of the tax year and as a non-resident for the rest.

The 2025 changes to tax on foreign income in the UK

One of the biggest changes to UK international taxation took effect on 6 April 2025.

Before this date, certain non-domiciled individuals could use the remittance basis, paying UK tax on foreign income only when it was brought into the UK.

This approach was abolished and replaced with a residence-based system.

The new Foreign Income and Gains (FIG) regime provides relief for some qualifying individuals who become UK tax residents after spending a sufficient period outside the UK.

You can usually get FIG relief if:

• You’re new or returning to the UK
• You were non-UK tax resident for at least 10 consecutive tax years
• You’re within your first 4 years of UK tax residence

The rules are detailed, and eligibility depends on several conditions, including prior residence.

If you believe you are affected by these changes, review your position carefully, because the tax consequences can be significant.

How foreign income is taxed in the UK 

Overseas income can be taxed in several ways. Rental income, foreign dividends, savings interest, pensions, and employment income all have their own reporting requirements and tax treatment.

In many cases, foreign income is added to your other taxable income and assessed using the same tax bands and allowances that apply to UK income.

That doesn't automatically mean you'll pay more tax. 

You may benefit from:

• Personal allowances
• Savings allowances
• Dividend allowances
• Foreign tax relief
• Double taxation agreements

The amount of tax due depends on your overall circumstances, the type of income involved, and whether tax has already been paid abroad.

Foreign income allowances and thresholds

Foreign income doesn’t have a separate allowance. Instead, the standard UK tax allowances generally apply.

Here’s a look at the relevant allowances for the 2026/27 tax year:

These thresholds are frozen until April 2028.

Common types of foreign income

UK taxpayers commonly receive one of the following types of foreign income:

Foreign employment income

The exact tax treatment of foreign employment income depends on where you perform the work, your residence status, and whether a double taxation agreement applies. 

In many cases, overseas salary is taxed in the same way as UK employment income and is subject to Income Tax at your marginal rate.

Foreign employment income may include:

• Salary and wages paid by an overseas employer
• Bonuses and commission payments
• Benefits provided as part of your employment package
• Certain share scheme payments

If you’re employed cross-border, the rules vary depending on the countries involved and the circumstances of the work performed.

Foreign rental income

If you’re a landlord with overseas property, you have to fulfill your landlord tax obligations even if the property is managed entirely by local agents.

You'll usually pay tax on your rental profit rather than the total rent received. 

To calculate your profit, you'll deduct allowable expenses from your rental income before reporting the figure to HMRC. 

Allowable expenses may include:

• Letting agent fees
• Property insurance
• Repairs and maintenance
• Professional fees connected to the property

You report foreign rental income in the foreign pages of your Self Assessment tax return. 

Foreign dividends, savings, and investment income

You may receive foreign income from:

• Overseas shares
• International investment funds
• Foreign savings accounts
• Overseas bonds
• Investment platforms holding non-UK assets

Many investors assume their platform deals with all tax reporting automatically. And while some information may be provided, responsibility for accurate reporting remains with the taxpayer.

Foreign dividends count towards your annual Dividend Allowance, which is £500 for the 2026/27 tax year. Any dividends above that allowance may be subject to dividend tax rates based on your Income Tax band.

Foreign interest from overseas bank accounts and savings products may qualify for the Personal Savings Allowance.

Some countries automatically withhold tax from dividends and interest before payment. If this happens, you may be able to claim Foreign Tax Credit Relief when completing your UK tax return.

🧠 Good to know

If you're receiving income in a foreign currency, keep records showing the exchange rates used to convert amounts into sterling, in case HMRC asks how the figures were calculated.

Foreign pensions

Foreign pensions are taxable if you're a UK tax resident, but the position depends on the relevant double taxation agreement.

In some cases, pension income is taxable only in the country paying the pension. In others, taxing rights belong to the UK.

Because treaty rules differ between countries, there is no single treatment that applies to all foreign pensions.

If you're receiving an overseas state pension, workplace pension, or private pension, check the relevant tax treaty to ensure you remain compliant.

How double taxation relief works

One of the biggest concerns people have about foreign income is being taxed twice.

Double taxation can arise because two countries both believe they have the right to tax the same income.

To help prevent this, the UK has double taxation agreements with many countries worldwide. These agreements set out which country has the right to tax different types of income and how relief should be given when both countries have a claim.

HMRC’s list of tax treaties contains up-to-date information on UK double taxation agreements by country, and it can help you find the rules that apply to your specific circumstances. 

Foreign Tax Credit Relief

Even if overseas tax has already been deducted, you typically need to report the income to HMRC.

However, you may be able to claim Foreign Tax Credit Relief for some or all of the tax you've already paid abroad.

For example, imagine you receive £5,000 in foreign dividend income, and the overseas tax authority deducts tax before the payment reaches you. When you report the income on your UK tax return, you may be able to offset some of that overseas tax against your UK tax bill.

In practice, this often means you'll only pay additional UK tax if the UK tax due is higher than the tax already paid overseas.

The rules can become more complicated if multiple countries, different income types, or treaty provisions are involved. In that case, you may want to seek professional advice to ensure no detail is missed.

💡 Did you know?

Claiming Foreign Tax Credit Relief is much easier when you have clear records of foreign income and tax already paid. ANNA’s Auto Accountant categorises transactions and stores supporting documents, helping keep everything organised for Self Assessment.

Filing a Self Assessment for foreign income

Filing a Self Assessment allows you to declare overseas income, report any foreign tax already paid, and claim relief where available. 

You'll generally need to complete the foreign income sections of your tax return alongside the relevant employment, property, pension, or investment pages.

If you're new to Self Assessment, you'll need to register with HMRC by 5 October after the tax year in which you earned the income. 

The online filing deadline is usually 31 January following the end of the tax year.

What records should you keep?

HMRC may ask for evidence showing how foreign income was calculated, what tax was paid overseas, and how amounts were converted into sterling.

You should keep records such as:

• Overseas bank statements showing income received
• Dividend vouchers and investment statements
• Rental income and expense records for overseas property
• Foreign tax assessments or withholding tax certificates
• Pension statements from overseas providers
• Employment records and payslips
• Exchange rate calculations used when preparing your return

Most taxpayers should retain records for at least six years after the relevant tax year.

How ANNA helps you manage foreign income and tax residency

Between tracking overseas earnings, applying exchange rates correctly, and making sure everything is reported under Self Assessment, admin can pile up.

Here’s how ANNA helps:

• Real-time tax estimates: ANNA gives you ongoing visibility of your estimated tax bill, helping you understand how overseas income affects your overall UK tax position throughout the year rather than at filing time
• Automated expense and income categorisation: ANNA automatically categorises transactions across income sources, making it easier to separate foreign income, dividends, and rental payments without manual sorting or spreadsheets
• Receipt capture: You can securely store receipts, invoices, and foreign tax documents in one place, and ensure you have the evidence HMRC may request when reviewing overseas income
• Smart pots: Pots help you allocate money for upcoming tax obligations, so you’re better prepared for Self Assessment payments
• Free Self Assessment filing and support: ANNA helps simplify Self Assessment by keeping your records organised and ready for filing, reducing the need to gather information from multiple accounts at the end of the tax year
• 24/7 support: You can get help whenever you need it through ANNA’s support team, with assistance available around the clock for account, bookkeeping, and tax-related questions 

Get started with ANNA today and simplify how you manage foreign income.