Mortgage Calculators

Free tools to help you understand your mortgage — whether you're buying, remortgaging, or planning ahead.

Repayment Calculator

Calculate your monthly repayment and the total cost of your mortgage at any rate and term.

See how much interest you could save and how many years you could cut from your term by overpaying each month.

Calculate SDLT, LBTT, or LTT on your purchase. Covers England, Scotland, and Wales with first-time buyer and buy-to-let rates.

Estimate the maximum mortgage you could borrow based on your income and deposit.

Calculate the monthly interest payment on an interest-only mortgage and the total cost over the term.

Calculate your loan-to-value ratio from your property value and deposit, and see which rate tier you fall into.

Compare your current rate against a new deal — monthly saving, break-even on fees, and total saving over the term.

Compare indicative rates from UK lenders — 2-year fixed, 5-year fixed, tracker, and SVR.