U.S. tax filing · London
U.S. Tax Filing for Americans in London
Fixed-fee support for U.S. citizens and Green Card holders in London — UK salary and PAYE, ISAs and SIPPs, City finance equity, FBAR and FATCA reporting.
London is home to one of the largest American communities in the world, spread across the City and Canary Wharf, tech, law, media and academia. Many arrive expecting the UK–U.S. tax treaty to handle everything — but PAYE income, tax-advantaged UK accounts and equity compensation still flow onto a U.S. return, often in ways the treaty does not fully shelter.
Typical situations we see in London
- ISAs (cash and stocks-and-shares): tax-free in the UK, but the U.S. generally does not recognise the wrapper, and funds inside can be PFICs.
- SIPPs and workplace pensions: UK treatment is favourable, but U.S. and treaty treatment of contributions and growth can differ and may need reporting.
- City finance and tech professionals with RSUs, options and bonuses to reconcile across UK and U.S. rules.
- UK funds, investment trusts and unit trusts held through a local platform that may be PFICs (Form 8621).
- Multiple UK bank and investment accounts that together cross the FBAR threshold.
What to check first
Start with whether your combined non-U.S. accounts crossed $10,000 at any point (FBAR), whether you hold UK or other non-U.S. funds (PFIC), and whether the Foreign Tax Credit or Foreign Earned Income Exclusion fits your situation better. The free Tax Risk Check walks you through it in a couple of minutes.
Atamatax provides tax preparation support and educational resources. This website does not constitute legal or tax advice.