Financial calculators
that actually help
No sign-up, no faff. Straightforward tools to help you understand your money better, built for everyday people in the UK.
Compound interest calculator
See how your savings grow when interest builds on interest. Adjust your rate, time horizon, and contributions.
Open calculatorSavings goal calculator
Enter your target, deadline and interest rate to find out exactly how much you need to save each month.
Open calculatorSubscription cost calculator
See exactly what you’re spending on subscriptions every month and model how much you could save by cutting back.
Open calculatorCoffee cost calculator
Pick your chain, drink, size and extras to see exactly what your daily coffee habit is really costing you each year.
Open calculatorMortgage repayment calculator
See your monthly payments and total interest across different deals.
50/30/20 budget planner
Split your take-home pay across needs, wants, and savings in seconds.
Self-assessment tax estimator
Get a rough idea of your self-assessment bill before it lands.
Each of these financial calculators is free to use, with no sign-up and nothing collected. They’re designed to turn vague feelings about money into actual numbers, whether that’s what a daily habit costs over a year, what your subscriptions really add up to, or what your savings could grow into with compound interest doing the work. Pick whichever one matches the question you’re trying to answer, and if you’re not sure where to start, the spending habits guide is a good place to get oriented.