UK & US Tax Calculators
14 free calculators for cross-border individuals and families. Every one gives an estimate in seconds — then tells you what a specialist would check next.
US tax & IRS Streamlined Filing calculators9
Federal tax for US citizens and Green Card holders abroad, plus the catch-up tools for anyone behind on IRS filings — Streamlined Filing, FBAR, back tax and FEIE vs FTC.
US Estate & Gift Tax Calculator
Estimate federal estate and gift tax after the 2026 lifetime exemption, portability and non-domiciliary US-situs rules.
Open calculator →United StatesUS Capital Gains Tax Calculator
Estimate long-term (0/15/20%) and short-term gains, plus the 3.8% Net Investment Income Tax, by filing status and income.
Open calculator →United StatesUS Exit Tax (Expatriation) Calculator
Check covered-expatriate status and estimate the Section 877A mark-to-market tax before renouncing citizenship or a Green Card.
Open calculator →United StatesUS Take-Home Pay Calculator
Estimate net annual and monthly salary after federal income tax, Social Security, Medicare (FICA) and state tax.
Open calculator →United StatesIRS Streamlined Filing Penalty Calculator
Estimate your IRS exposure for late expat returns and see where the Streamlined Filing Compliance Procedures leave you.
Open calculator →United StatesFBAR Penalty Calculator
Estimate IRS penalties for unreported foreign bank accounts, and see the difference between non-wilful and wilful exposure.
Open calculator →United StatesUS Back Tax Calculator for Expats
Estimate what you owe the IRS across unfiled years, including interest and penalties, before you come forward.
Open calculator →United StatesFEIE vs FTC Calculator
Compare the Foreign Earned Income Exclusion against the Foreign Tax Credit to see which leaves you better off.
Open calculator →United StatesUS Late Filing Penalty Calculator
Estimate IRS failure-to-file and failure-to-pay penalties on a missed US return, including the combined-month reduction and interest.
Open calculator →UK tax calculators5
HMRC tax for UK residents and non-doms — inheritance tax, capital gains, stamp duty and the post-2025 Foreign Income & Gains regime.
UK Inheritance Tax Calculator
Estimate the IHT on your estate using nil-rate bands, the residence allowance, gifts and charitable legacies.
Open calculator →United KingdomUK Capital Gains Tax Calculator
Estimate CGT on property, shares and other assets by income band, apply the annual exempt amount and see your net gain.
Open calculator →United KingdomUK Non-Dom / FIG Regime Calculator
Check eligibility for the post-2025 Foreign Income & Gains regime and estimate the UK tax saved in your first four residence years.
Open calculator →United KingdomUK Stamp Duty (SDLT) Calculator
Estimate SDLT on a residential purchase, including first-time buyer relief, buy-to-let and the non-UK-resident surcharge.
Open calculator →United KingdomUK Late Filing Penalty Calculator
Estimate HMRC late filing and late payment penalties on a missed Self Assessment return, with interest on the tax outstanding.
Open calculator →A calculator gives you the number. We give you the plan.
Every figure here is an estimate for guidance only, and cross-border cases turn on details a calculator cannot see. Book a confidential consultation and we will map your position on both sides of the Atlantic.