Free Tools
US & UK Tax Calculators
Instant, free estimates for the taxes that matter most to cross-border individuals and businesses — on both sides of the Atlantic. Run a calculator, download a branded PDF of your result, and see where a US-UK specialist can save you the most.
USA Tax & IRS Streamlined Filing
Federal income tax and the compliance tools US citizens and Green Card holders abroad ask about most — FEIE, FBAR and the IRS Streamlined Filing procedures.
US Federal Income Tax Calculator
2025Estimate 2025 federal tax, taxable income, effective rate and take-home by filing status.
Open calculator →Foreign Earned Income Exclusion (FEIE) Calculator
2025See how much foreign salary you can exclude from US tax under Section 911 (Form 2555).
Open calculator →FBAR Penalty Calculator
NewEstimate potential FBAR (FinCEN 114) penalties for undisclosed foreign accounts — willful vs non-willful.
Open calculator →IRS Streamlined Filing Eligibility & Penalty
NewCheck Streamlined Foreign/Domestic Offshore eligibility and estimate the 5% miscellaneous penalty.
Open calculator →UK Tax Calculators
The UK's most-searched tax calculators — income tax, stamp duty, capital gains and National Insurance — with the cross-border context US-connected taxpayers need.
UK Income Tax Calculator
2025/26Estimate 2025/26 UK income tax, National Insurance, take-home and effective rate.
Open calculator →Stamp Duty (SDLT) Calculator
2025Calculate Stamp Duty Land Tax on UK property, including first-time buyer relief and the additional and overseas-buyer surcharges.
Open calculator →UK Capital Gains Tax Calculator
2026/27Estimate CGT on property and shares at 18% and 24% for 2026/27, with the £3,000 annual exempt amount applied.
Open calculator →National Insurance Calculator
2026/27Work out employee (Class 1) and self-employed (Class 4) National Insurance for 2026/27.
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