Free tools and guides for life between two tax systems

Calculators & Tools

Interactive estimators for double taxation, FBAR, residency and more.

Insights & Guides

Plain-English articles on US expat tax, UK accounting and cross-border planning — written and reviewed by our team.

Glossary

Clear definitions of the US and UK tax terms that matter — FBAR, FEIE, SRT, PFIC and more.

Tax Data Centre

Every US and UK figure that matters — FEIE, FBAR, FATCA, rates, treaty articles and deadlines — each with its official IRS or HMRC source.

FBAR vs Form 8938

How the two US foreign-asset reports differ and why many filers need both.

Streamlined Filing vs Delinquent FBAR

Which IRS catch-up route fits your situation, and how the procedures compare.

US Tax Return vs UK Tax Return

How US and UK personal tax returns differ in scope, timing and obligations.

Foreign Tax Credit vs US–UK Tax Treaty

When to rely on the Foreign Tax Credit versus treaty provisions to avoid double tax.

FEIE vs Foreign Tax Credit

When to exclude foreign earned income and when to credit foreign tax instead.