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Free calculator

Mortgage calculator

Enter the loan amount, the term and the interest rate to see the monthly payment, the interest and what happens if the rate goes up.

Use the full rate you pay (for a tracker, the index plus the margin).

Monthly payment
—
Interest in year 1
Capital repaid in year 1
Total interest
Total paid
If the rate rises 1 point

Repayment mortgage with equal monthly payments and the same rate for the whole term. Doesn't include insurance, fees or buying costs. Not an offer or financial advice. Works with any currency.

How much should the payment be?

A common rule of thumb is to keep all loan payments under about a third of your household's take-home pay. Remember to count insurance, service charges and property taxes in your fixed costs too.

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Want it all organised?

Saving for a deposit? The Savings Challenge has the 52-week and 365-day challenges and colour-in savings jars, with a spreadsheet that does the maths.

See the Savings Challenge 2027