Updated for 2026/27
Monthly payment on a £450,000 mortgage
Quick answer
A £450,000 repayment mortgage over 25 years at 5% costs about £2,631 a month. Over the full term you'd repay £789,197 in total, including £339,197 of interest.
Reviewed by TaxFly Editorial Team
How we calculate
- Mortgage amount
- £450,000
- Interest rate
- 5%
- Term
- 25 years
- Total interest
- £339,197
- Monthly payment
- £2,631
What are the monthly repayments on a £450,000 mortgage?
A £450,000 repayment mortgage at 5% over 25 years works out to roughly £2,631 a month. The rate you're offered makes a big difference, so here's how the monthly payment changes:
| Rate | 25-yr monthly | 30-yr monthly |
|---|---|---|
| 4.0% | £2,375 | £2,148 |
| 4.5% | £2,501 | £2,280 |
| 5.0% | £2,631 | £2,416 |
| 5.5% | £2,763 | £2,555 |
| 6.0% | £2,899 | £2,698 |
How much interest will you pay?
Over the 25-year term you'd pay about £339,197 in interest on top of the £450,000 borrowed — a total of £789,197. Overpaying even a small amount each month can cut years off the term and save thousands. Model overpayments and compare deals on the mortgage calculator.
Other mortgage amounts
Frequently asked questions
About £2,631 a month on a 25-year repayment mortgage at 5%. A different rate or term changes this — see the table above.
Around £339,197 over 25 years at 5%, making £789,197 repaid in total.
Lenders typically cap borrowing at about 4.5× income, so roughly £100,000 household income — though this varies. Check affordability on our mortgage tools.
