Financial Calculators
Mortgages, tax, pay and savings — worked out properly, with the numbers shown.
- Mortgage CalculatorWork out monthly mortgage repayments from the price, deposit, rate and term. See…
- Mortgage Comparison CalculatorCompare two or three mortgage deals side by side, fees included, to see which is…
- Mortgage Overpayment CalculatorSee what overpaying your mortgage is worth: the interest you avoid and the years…
- Stamp Duty CalculatorCalculate UK stamp duty land tax on a property purchase, including first-time bu…
- Take-Home Pay CalculatorWork out your take-home pay after income tax, National Insurance and pension con…
- Compound Interest CalculatorSee how savings grow with compound interest and regular monthly contributions. C…
These are the money calculations that decide something — what a mortgage actually costs once fees are counted, what lands in your account after tax, what a house purchase adds up to before you commit. Each one shows the figures behind the answer rather than just the answer, because a number you can't check is a number you can't argue with.
The tax bands, thresholds and reliefs behind these tools come from HMRC, Revenue Scotland and the Welsh Revenue Authority, and each calculator links to the source it uses. Rates change, usually in April, so the verification date is published alongside the figures.
Which one do you need?
- Work out the monthly payment on one mortgageMortgage Calculator
- Decide between two or three deals, fees includedMortgage Comparison Calculator
- See what paying extra each month would save youMortgage Overpayment Calculator
- Find the stamp duty on a purchase, anywhere in the UKStamp Duty Calculator
- Turn a salary into actual take-home payTake-Home Pay Calculator
- Project how savings or investments grow over timeCompound Interest Calculator
Guides
- Stamp duty across the UK, comparedThe same house taxed three different ways. Wales is cheapest below about £310,000, Scotland dearest above about £333,000, and one extra pound at £500,000 costs an English first-time buyer £5,000.
These calculators are for working things out, not for advice. For anything you're relying on — a mortgage offer, a tax position — check the figure against the lender or the official source before acting on it.