UK Calculators

Free, no-signup calculators covering tax, mortgages, savings, pensions and more.

Tax & take-home

Since April 2025

UK Capital Gains Tax Calculator: Residential Property

Calculate Capital Gains Tax on the sale of UK residential property, accounting for Private Residence Relief, the Annual Exempt Amount, and the basic / higher rate split for the year of disposal.

Fiscal year 2026-27

UK Take-Home Salary / PAYE Calculator

Enter your gross salary to see your monthly and annual take-home pay after income tax and National Insurance.

Loans & mortgages

Mortgage Payment Calculator

Work out your monthly mortgage payment and see how much you'll pay in interest over the life of the loan.

Mortgage Overpayment Calculator

See how much interest you save and how many years earlier you finish the mortgage when you pay extra each month.

Savings & investing

Compound Interest Calculator

See how a single deposit grows over time. Compare daily, monthly, quarterly and yearly compounding side by side.

Pensions & retirement

Fiscal year 2026-27

UK Pension Salary-Sacrifice Calculator

See how sacrificing part of your salary into your pension cuts your income tax and National Insurance, and how little it actually costs your take-home pay.

Property

Since December 2024

Scottish LBTT Calculator

Calculate Scottish Land and Buildings Transaction Tax on residential property purchases: first-time buyer relief, Additional Dwelling Supplement, and the date-dependent rate schedule since 2015.

Since April 2025

UK Stamp Duty (SDLT) Calculator

Calculate UK Stamp Duty Land Tax on residential property purchases: first-time buyer relief, additional-property surcharge, and corporate flat rate all in one place.

Since December 2024

Welsh LTT Calculator

Calculate Welsh Land Transaction Tax on residential property purchases, including the separate higher-residential rates that apply to second homes and buy-to-let.

Debt

Plan thresholds to 2025/26

UK Student Loan Repayment Calculator

See when your student loan clears or gets written off, how much you'll repay in total, and whether overpaying actually saves you anything.

About these calculators

All numbers are computed against the published HMRC legislative tables for the indicated tax year. Each calculator carries a "Sources" footer linking to the primary HMRC / gov.uk pages it draws on; rates and thresholds update automatically when a new tax year's figures land.