Accountants & tax preparation for expats in the UK
Filing taxes as an expat means navigating two systems at once. Whether you need help with HMRC Self Assessment, US expat returns, FBAR filings or day-to-day UK accounting, find specialist providers here — reviewed for people moving to or living in the UK.
Browse providers ↓Accountants & tax services for expats
Every provider below has been reviewed by our editorial team before listing.
5 providers listed
Specialist US expat tax software backed by IRS Enrolled Agents and CPAs. Covers Self Assessment, FBAR, FATCA and international returns across 165+ countries — with flat-rate pricing and instant IRS e-filing.
IRS-authorised e-filing platform for 1099s, W-2s and other US information returns. Integrates with QuickBooks, Xero and FreshBooks — ideal for US expats managing American reporting obligations from the UK.
Intuit's trusted tax preparation platform for individuals, families and the self-employed. Step-by-step guidance on deductions, credits, investment income and self-employment — file independently or with professional help.
Global accounting software trusted by millions of small businesses. Covers bookkeeping, invoicing, payroll and HMRC-compatible tax submissions — including Making Tax Digital (MTD) — in one scalable platform.
US tax platform connecting expats with licensed CPAs and IRS Enrolled Agents. Covers FBAR, FATCA, foreign income and multi-country compliance — with transparent pricing and secure document management throughout.
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Tax as an expat in the UK: what you need to know
Moving to the UK doesn't just change where you live — it changes your tax position. The UK operates a residence-based tax system, meaning that once you become UK tax resident (which typically happens after 183 days in a tax year, though the Statutory Residence Test has earlier trigger points), you become liable to UK tax on your worldwide income and gains. For US citizens, the situation is more complex: the US taxes on the basis of citizenship, so Americans living in the UK must file in both countries every year.
For most PAYE employees, UK taxes are handled automatically through payroll and no Self Assessment return is required. However, if you have foreign income, rental income, investment gains, self-employment income, or certain other sources, HMRC requires you to register for and file a Self Assessment return by 31 January each year. Penalties for late filing start at £100 and increase sharply — it is worth registering as soon as you know a return will be required rather than waiting until January.
US expats face an additional layer of compliance. The Foreign Account Tax Compliance Act (FATCA) and the Foreign Bank Account Report (FBAR) both require disclosure of overseas financial accounts above certain thresholds. Failure to file carries significant penalties even if no tax is owed. Specialist US expat tax services — staffed by IRS Enrolled Agents rather than generalist accountants — are strongly recommended for Americans living abroad.
For self-employed expats and small business owners, accounting software with Making Tax Digital (MTD) compatibility is increasingly important. HMRC's MTD initiative is expanding to cover more taxpayers, and from April 2026 the majority of self-employed individuals and landlords with income above £50,000 will be required to submit quarterly updates digitally rather than an annual return.
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