UK Financial Calculators
Free, accurate tools for mortgages, tax, pensions, and more. Updated for the 2025/26 tax year.
Mortgage Calculator
Monthly repayments, total interest, and mortgage comparisons.
Stamp Duty
SDLT costs for residential, buy-to-let, and first-time buyers.
Income Tax
Take-home pay with income tax, NI, and student loan deductions.
Pension
Project your retirement pot based on contributions and growth.
Savings
Compound interest growth with regular or lump sum deposits.
Loan
Repayments for personal loans, car finance, and credit.
ISA
Tax-free savings projections for Cash and Stocks & Shares ISAs.
Inheritance Tax
Estimate IHT liability using current nil-rate band thresholds.
Dividend Tax
Calculate tax on dividends for directors, self-employed, and investors.
Capital Gains Tax
CGT on property, shares, and other assets with annual exemption.
Self-Employed Tax
Income tax, Class 4 NI, and take-home pay for sole traders.
Buy-to-Let
Rental yield, mortgage costs, and Section 24 tax for landlords.
Inflation
See how inflation erodes purchasing power and affects your salary.
Credit Card
See how long to clear your balance and save with extra payments.
Car Finance
Compare PCP, HP, and personal loan costs for buying a car.
Built for the UK
Every calculator uses current HMRC rates and thresholds so you can plan with confidence.
Current rates
Updated for the 2025/26 tax year with the latest HMRC bands.
Private
All calculations run in your browser. No data is stored or sent anywhere.
Free
No sign-ups, no paywalls. Every calculator is completely free.