Free Tools
UK & US Tax Calculators
Free, accurate calculators for US expats and cross-border families — built by specialist US–UK tax advisers. Estimate your position in seconds, download a branded PDF, and talk to us about optimising it.
US Tax & IRS Streamlined Filing
Calculators for Americans abroad — federal tax, the Foreign Earned Income Exclusion, and IRS Streamlined penalty exposure.
US Expat Tax Calculator (FEIE + FTC)
Estimate your US tax as an American abroad using the Foreign Earned Income Exclusion and Foreign Tax Credit — and see which saves you more.
Open calculator →
IRS Streamlined Penalty Calculator
Behind on US taxes? Estimate your offshore penalty exposure and how much the IRS Streamlined programme could waive — often to zero for expats abroad.
Open calculator →
US Federal Income Tax Calculator
Estimate your 2025 US federal income tax, effective and marginal rates, and take-home pay using the current brackets and standard deduction.
Open calculator →
US Self-Employment Tax Calculator
Self-employment tax for 2026 at 15.3% on 92.35% of profit, plus the 0.9% surtax — and whether a totalization agreement removes it entirely abroad.
Open calculator →
US Capital Gains Tax Calculator
Capital gains tax for 2026 at 0%, 15% or 20%, plus the 3.8% Net Investment Income Tax — and how much US tax survives your foreign tax credits abroad.
Open calculator →UK Tax Calculators
The UK's most-searched tax calculators — income tax and the 60% trap, capital gains, and US–UK double-tax relief.
UK Income Tax Calculator
Income tax, National Insurance, take-home pay and the notorious 60% tax trap between £100,000 and £125,140 for 2025/26.
Open calculator →
UK Capital Gains Tax Calculator
Capital Gains Tax on property and shares at the 2025/26 rates of 18% and 24%, after your £3,000 annual exempt amount.
Open calculator →
UK Dividend Tax Calculator
Dividend tax at the new 2026/27 rates of 10.75%, 35.75% and 39.35%, after your £500 dividend allowance — plus the US tax for American shareholders.
Open calculator →
UK Stamp Duty Calculator
Stamp duty on a UK property purchase for 2026/27 — SDLT, LBTT or LTT, plus the 5% additional property surcharge and the 2% non-resident surcharge.
Open calculator →
US–UK Double Tax Calculator
Estimate your UK tax, US tax and Foreign Tax Credit relief as an American living in the UK, and whether any extra US tax is due.
Open calculator →Get in Touch
Ready to get
your US taxes
sorted?
Whether you need help with IRS Streamlined filings, annual US tax returns, or cross-border tax planning — our team is here for you.
View Contact DetailsSend us a message
Powered by Next Source AI Ltd