Free tools · new calculators daily
US & UK Tax Calculators
Fast, accurate tax calculators for the US and UK — and the cross-border cases in between. Every tool gives you a free, TaxStone-branded PDF of your result.
- 🇺🇸 USA · Tax year 2025
US Federal Income Tax Calculator
Estimate your 2025 US federal income tax, marginal and effective rates, and after-tax income by filing status. Free calculator with a branded PDF report.
Open calculator → - 🇬🇧 UK · 2025/26
UK Take-Home Pay Calculator
Calculate your UK take-home pay for 2025/26 after Income Tax and National Insurance. Free salary-after-tax calculator with a branded PDF report.
Open calculator → - Coming this week
More tools, every day
Self-employment tax, capital gains, stamp duty, FEIE, “do I owe US tax abroad?” and more — we publish new US, UK and cross-border calculators daily.
Cross-border tax?
US and UK at once? Get it checked.
Calculators show one side. If you file in both countries, book a free 20-minute call with a TaxStone Enrolled Agent.