Taxes for American
Expats Living in the
United Kingdom
Author:
Josh Katz, CPA
September 16, 2024
Understanding HMRC and UK Tax Residency
UK Tax Rates and Deadlines
UK Tax Year
PAYE (Pay As You Earn) System
National Insurance Contributions and Benefits
US Tax Obligations for American Expats in the UK
Expat Tax Services and US Tax Help in the UK
How Universal Tax Professionals Can Help
2025 US Expat Tax Guide
Key Takeaways:
Taxes for American Expats Living in United Kingdom
American expats in the UK must comply with tax rules from both Her Majesty’s Revenue and Customs (HMRC) and the Internal Revenue Service (IRS). This requires careful navigation of each system’s requirements.

UK Tax Residency

National Insurance Contributions

Foreign Financial Reporting

US-UK Tax Treaty and Totalization Agreement

Expat Tax Services

Understanding HMRC and
UK Tax Residency
GOV.UK
UK Residency is determined by the Statutory Residence Test (SRT). The SRT considers several factors, including the number of days you spend in the UK and your ties to the country. To be a UK resident for tax purposes, you generally need to meet one of the following criteria:
- You spend 183 or more days in the UK in a tax year.
- You have your only home in the UK and are present for at least 30 days during the tax year.
- You meet specific conditions of the ‘automatic overseas test’ or the ‘automatic UK test’.
UK Tax Rates and
Deadlines
2024 UK Tax Rates
| Tax Rate | Income Range |
|---|---|
| Basic Rate (20%) | Applies to income between £12,571 and £50,270. |
| Higher Rate (40%) | Applies to income between £50,271 and £150,000. |
| Additional Rate (45%) | Applies to income over £150,000. |
In addition to income tax, you will also contribute to National Insurance if you are employed or self-employed. National Insurance contributions help fund state benefits and the UK’s social security system.
Read More: UK Tax Deadline for American Expats
UK Tax Year
PAYE (Pay As You Earn): If you are an employee, your employer will handle tax withholding through the PAYE system. Ensure that your employer is correctly deducting taxes from your salary.
PAYE (Pay As You Earn) System
Important Note:
The PAYE system operates in real time, meaning your employer deducts tax from your wages throughout the year. Ensure that your employer provides a P60 form by May 31st, following the end of the tax year. This form summarizes your total earnings and the taxes paid.
National Insurance
Contributions and Benefits
Class 1 Contributions: Paid by employees and deducted from your wages through the PAYE system.
Class 2 and Class 4 Contributions: Paid by self-employed individuals, with Class 2 being a flat rate and Class 4 being based on profits.
National Insurance contributions entitle you to benefits such as healthcare, unemployment benefits, and state pensions. Ensure you understand how these contributions affect your eligibility for benefits and how they are calculated.
US Tax Obligations
for American Expats in the UK
Filing Requirements
Foreign Earned Income Exclusion (FEIE)
Bona Fide Residence Test: This test requires that you live in a foreign country for an uninterrupted period that includes an entire tax year and demonstrate that you are a bona fide resident of that country.
Foreign Tax Credit (FTC)
Foreign Bank Account Reporting (FBAR)
Requirement: If you have financial accounts outside the US with an aggregate value exceeding $10,000 at any time during the calendar year, you must file the Foreign Bank Account Report (FBAR) using FinCEN Form 114. This requirement is separate from your income tax return and is submitted electronically through the Financial Crimes Enforcement Network (FinCEN) website.
Read More: 5 Things to know about FBAR
Foreign Accounts and Assets Reporting
US-UK Tax Treaty
Social Security and Medicare Taxes
Expat Tax Services and US Tax Help in the UK
How Universal Tax Professionals Can Help