Finance Calculators
164 free finance calculators with clear, detailed guides.
All Finance Calculators
About our finance calculators
Our finance calculators span personal money management, tax, property, and investing — mortgages and overpayments, income tax and National Insurance, savings and compound interest, pensions, budgeting, debt payoff, and more. Each gives a clear result with the method shown, so you understand how the figure was reached.
Finance calculations carry real-world consequences, so these tools use current UK rates and thresholds where applicable and show their working. Finance calculators include a clear note that they provide information, not regulated financial advice — they’re built to help you understand your options and do your own informed planning.
Every calculator is free and needs no account. For significant financial decisions, use these to understand the numbers, then seek personalised advice from a regulated professional.