Free UK tax & financial calculators

No-signup tools that compute your numbers straight from the published HMRC tables: PAYE take-home, stamp duty, mortgage payments and overpayment, compound interest, and more.

Start with a calculator

Browse the full set on the calculators hub, or jump straight to one of the most-used tools:

PAYE take-home calculator: gross salary to monthly and annual take-home, with the income-tax and National Insurance breakdown.
Stamp Duty (SDLT) calculator: the tax due on a property purchase, including first-time-buyer relief and the additional-property surcharge.
Mortgage overpayment calculator: how much interest and time a regular overpayment saves over the life of your mortgage.