Use this UK mortgage calculator to estimate monthly mortgage repayments, interest and total borrowing cost. It is useful for checking how the loan amount, deposit, interest rate and mortgage term can change your monthly payment.
Monthly repayments are mainly affected by three numbers: the amount borrowed, the interest rate and the mortgage term. A higher interest rate increases the payment. A longer term usually lowers the monthly payment but increases total interest over time.
| Mortgage question | What to enter | What to review |
|---|---|---|
| How much would a GBP 120k mortgage cost? | Borrowing amount, rate and term | Monthly repayment and total interest |
| How much is a GBP 70k mortgage per month? | GBP 70,000 plus term and rate | Monthly affordability |
| Should I choose a longer term? | Compare 25, 30 and 35 years | Lower monthly cost versus higher total interest |
This calculator gives an estimate only. Real mortgage offers depend on lender criteria, credit checks, product fees and whether the rate is fixed, tracker or variable.
For more detail, read UK mortgage repayments explained. You can also compare borrowing with the loan calculator, check income with the salary calculator, or work out rate changes with the percentage calculator.
They are calculated from the loan balance, interest rate and mortgage term. Repayment mortgages include both interest and part of the loan balance each month.
Spreading the mortgage over more years usually reduces the monthly payment, but interest is paid for longer so the overall cost can rise.