34+ free GB calculators
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Popular calculators
UK Buy-to-Let Mortgage Calculator
Interest-only payment, cash flow and gross rental yield on a buy-to-let.
View calculatorUK Remortgage Calculator
Monthly payment savings from remortgaging to a new rate or term.
View calculatorUK Salary Sacrifice Calculator
Income tax and National Insurance saved by sacrificing salary into a pension.
View calculatorUK Corporation Tax Calculator
Corporation tax with marginal relief between the small profits and main rates.
View calculatorUK Dividend Tax Calculator
Dividend tax after the dividend allowance, based on your income.
View calculatorUK Inheritance Tax Calculator
Inheritance tax above the nil-rate band, at the standard 40% rate.
View calculatorUK Capital Gains Tax Calculator
Capital gains tax after the annual exempt amount, based on your income.
View calculatorUK Employer NI Calculator
Employer National Insurance owed on an employee's annual salary.
View calculatorUK Self-Employed Tax Calculator
Income tax and Class 4 National Insurance on self-employed profit.
View calculatorMortgage Calculator
Monthly Payment
£1,617.97
- Loan amount
- £270,000
- Deposit
- £30,000
- Total interest
- £215,391
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My UK Calculator provides free, accurate calculators for everyday financial and life decisions. Each calculator shows its formula, its assumptions and a worked example — not just a final number.
Frequently asked questions
Are these calculators accurate?
Yes. Every calculator uses the documented formula for that calculation, with assumptions shown clearly on the page — nothing is a black box.
Do I need an account to use them?
No. Every calculator is free to use with no sign-up required.
Are my calculation inputs stored?
No. Calculations run in your browser, and we don't store your financial inputs unless a feature explicitly requires it.