Your money, your numbers.
Free calculators for UK residents: mortgage, SDLT stamp duty, income tax & National Insurance, ISA growth, and pension projections.
Loans & EMI
1 calculator
Tax
4 calculators
Income Tax
Calculate take-home pay after Income Tax, National Insurance, pension contributions and student loan repayments.
Stamp Duty
Calculate Stamp Duty Land Tax on residential property purchases in England and Northern Ireland.
Capital Gains
Calculate CGT on shares, property and other assets after the £3,000 annual allowance at 2024+ rates.
Salary
Convert gross salary to net take-home after Income Tax, National Insurance, pension, and student loan.
Savings
3 calculators
Goals
1 calculator
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Free, fast, private.
Built for people who want the math — without ads begging for their email address.
Accurate to the cent
Every formula matches HMRC and FCA standards.
100% private
Every calculation runs in your browser. We never see, store, or transmit your financial details.
Always free
No paywalls, no accounts, no "pro" upgrades. Just the tools you need.