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.
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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.
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US Federal Income Tax Calculator
Estimate your 2026 US federal income tax, effective and marginal rates, and take-home pay using the current brackets and standard deduction.
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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.
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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.
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US Estimated Tax Calculator
Your four Form 1040-ES payments for 2026, the 90% and 110% safe harbours, and the underpayment penalty — with the foreign tax credit applied only where it is allowed.
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Foreign Housing Exclusion Calculator
Your Form 2555 housing exclusion for 2026 using the location limits — London is capped at $68,600 against a standard limit of $39,870.
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Net Investment Income Tax Calculator
The 3.8% NIIT on Form 8960 for 2026, with the Form 2555 exclusion added back to your MAGI and the foreign tax credit stopped where the law stops it.
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US Exit Tax Calculator
Test covered expatriate status for 2026, price the section 877A deemed sale after the $910,000 exclusion, and see what the UK still taxes on the same gain.
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 2026/27.
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UK Capital Gains Tax Calculator
Capital Gains Tax on property and shares at the 2026/27 rates of 18% and 24%, after your £3,000 annual exempt amount.
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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.
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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.
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UK Rental Income Tax Calculator
Landlord tax for 2026/27 after Section 24 relief, the property allowance and joint ownership — plus the non-resident landlord scheme and the new 2027 property rates.
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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.
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UK Corporation Tax Calculator
Corporation Tax for 2026/27 with Marginal Relief, associated company limits and the 26.5% marginal band — plus the US charge if an American owns the company.
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UK Pension Annual Allowance Calculator
Your tapered annual allowance, carry forward, the annual allowance charge and whether mandatory scheme pays is available for 2026/27.
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UK Self-Employed Tax Calculator
Sole trader income tax, Class 4 National Insurance, student loan and your real January and July payments on account for 2026/27 — plus the US SE tax an American can avoid.
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