£450,000 Mortgage: Monthly Payments
A £450,000 mortgage over 25 years at 5% costs about £2,631 a month. Here is how the payment changes with the rate and the length of the mortgage.
Monthly repayment on £450,000
| Interest rate | 15 years | 20 years | 25 years | 30 years | 35 years |
|---|---|---|---|---|---|
| 3% | £3,108 | £2,496 | £2,134 | £1,897 | £1,732 |
| 4% | £3,329 | £2,727 | £2,375 | £2,148 | £1,992 |
| 5% | £3,559 | £2,970 | £2,631 | £2,416 | £2,271 |
| 6% | £3,797 | £3,224 | £2,899 | £2,698 | £2,566 |
| 7% | £4,045 | £3,489 | £3,181 | £2,994 | £2,875 |
Repayment or interest-only?
| Interest rate | Interest-only a month | Repayment a month (25 years) |
|---|---|---|
| 3% | £1,125 | £2,134 |
| 4% | £1,500 | £2,375 |
| 5% | £1,875 | £2,631 |
| 6% | £2,250 | £2,899 |
| 7% | £2,625 | £3,181 |
Interest-only is cheaper each month but you still owe all £450,000 at the end, so you need a plan to repay it.
Total cost
At 5% over 25 years you pay £789,197 in total: the £450,000 borrowed plus about £339,197 of interest. Overpaying a little each month can shorten the term and cut the interest; try the mortgage overpayment calculator.
Nearby amounts
Figures assume a fixed rate for the whole term. Most people fix for two to five years and then move to a new deal, so payments can change. Fees and stamp duty are extra. Speak to a regulated mortgage adviser before you borrow.
Frequently asked questions
How much is a £450,000 mortgage per month?
Over 25 years at 5% a £450,000 repayment mortgage costs about £2,631 a month. At 4% it is £2,375 and at 6% £2,899.
How much interest will I pay on a £450,000 mortgage?
At 5% over 25 years you would pay about £339,197 in interest on top of the £450,000 you borrow, so £789,197 in total.
What income do I need for a £450,000 mortgage?
Lenders typically offer 4 to 4.5 times income, so you would need an income of roughly £100,000 to £112,500, depending on your outgoings.
What is the difference between repayment and interest-only?
With a repayment mortgage you pay off the loan as well as the interest, so you own the home outright at the end. With interest-only you pay just the interest each month and still owe the full amount at the end.
Figures are for the 2026/27 tax year from official sources and are estimates for guidance only, not financial or legal advice. Printed from ukanswers.co.uk.