Tools & checkers
We only publish tools that can be honest. Filing obligations follow published rules, so a checker can genuinely help. Tax liability depends on facts no calculator can see — so we don’t pretend otherwise.
Do I need to file a US return or FBAR?
A five-question, rules-based checker covering the US filing thresholds and the $10,000 FBAR trigger — with a plain answer and the reasoning behind it.
Start the checkerIn development
A FEIE-vs-Foreign-Tax-Credit comparator and a UK Statutory Residence Test walkthrough are being built and reviewed. We publish tools only once they can be accurate.
Why no “US–UK tax calculator”?
Your combined liability depends on residence, elections, treaty positions, timing and the character of each income item. Any calculator promising a number would be guessing — and guessing is not a service. A consultation is how you get a real answer.
Talk to a US–UK tax specialist
Tell us about your situation and we’ll explain your position across both systems — what you need to file, what you can plan around, and what it will cost.
Or call +44 20 8064 3580 — we’ll tell you honestly whether you need help.