Mortgage Repayment Calculator

£
Total purchase price of the property.
%
We’ll compute the loan amount from price × (1 − deposit%).
%
Annual fixed rate. For trackers, use an assumed average APR.
Loan amount
—
Monthly payment
—
Total interest (lifetime)
—
Total paid (principal + interest)
—
Item Amount
Assumes fixed APR, equal monthly payments. Results are estimates only.

About This Mortgage Calculator

This tool estimates UK repayment or interest-only mortgage payments. Enter price, deposit, rate and term to see the monthly cost, total interest and total amount paid.

Updated 2025

How payments are calculated

  • Repayment: standard amortisation: M = P · r · (1+r)n / ((1+r)n − 1), with monthly rate r = APR/12, months n = years×12.
  • Interest-only: monthly interest P·r (principal not reduced); total interest assumes paying interest for the full term.
Example: £300,000 property, 10% deposit, 5.0% APR over 25 years → monthly repayment about £1,577.

Common Questions

What is LTV and how is it used?

LTV (loan-to-value) is the loan amount divided by the property price. Lenders use LTV bands (e.g., 60%, 75%, 90%) to set rates and eligibility.

Many mortgages fix for 2–5 years then revert to a variable (SVR) or tracker rate. This calculator assumes the entered APR applies for the whole term for simplicity.

Estimates only; does not include fees, insurance, or taxes. Always check with your lender/broker.

Mortgage payment examples

Quick reference for monthly repayments using the current inputs (repayment, 10% deposit, 5.0% APR, 25y unless changed).

Property price Monthly repayment Copy