Free UK money calculators to help you budget, plan for a mortgage, check your take-home pay, work out compound interest and find your FIRE number. If you are not sure where to begin, start with your take-home pay, then build a budget around it.

Start here

Take-home pay calculator: see your salary after Income Tax, National Insurance and pension.
Budgeting calculator: put in your income and spending to see where your money goes each month.
Compound interest calculator: see how your money could grow when the growth starts earning growth of its own.
Mortgage calculator: work out your monthly repayments from the loan, interest rate and term.
Lifetime ISA calculator: work out your 25% government bonus towards a first home or retirement.

Financial freedom and retirement calculators

New to FIRE? It stands for Financial Independence, Retire Early. Read what the FIRE movement is first, then try these.

FIRE calculator: your FIRE number: the pot you would need to stop working.
Coast FIRE calculator: the age you could stop saving and let your pot grow on its own.
Barista FIRE calculator: your number if part-time work covers some of your costs.
Fat FIRE calculator: your number for a comfortable early retirement.
Lean FIRE calculator: your number for a frugal early retirement.
Retirement income calculator: what your pension pot could pay you each year.

How to get the most from them

Each calculator is built to be one part of a wider money plan. Use the budget and take-home pay calculators to see what you have, the mortgage and Lifetime ISA calculators to plan a home, and the compound interest and FIRE calculators to plan the long term.

The results are estimates based on the numbers you put in, not advice. Any growth figures are illustrations: investment growth isn’t guaranteed, and your capital is at risk when you invest.