Mortgage Repayments
Mortgage Repayments on £450,000 Over 15 Years
Monthly repayments on a £450,000 UK mortgage over 15 years at a representative 4.5% interest rate are £3,442.47. Total cost over the term: £619,644.56, of which £169,644.56 is interest.
Monthly
£3,442.47
Total paid
£619,644.56
Interest
£169,644.56
Monthly Payment at Different Rates
UK mortgage rates change frequently. See how the monthly cost varies at typical fixed-rate levels:
| Interest rate | Monthly | Total cost | Total interest |
|---|---|---|---|
| 3.50% | £3,216.97 | £579,054.86 | £129,054.86 |
| 4.00% | £3,328.60 | £599,147.22 | £149,147.22 |
| 4.50% | £3,442.47 | £619,644.56 | £169,644.56 |
| 5.00% | £3,558.57 | £640,542.84 | £190,542.84 |
| 5.50% | £3,676.88 | £661,837.60 | £211,837.60 |
| 6.00% | £3,797.36 | £683,524.03 | £233,524.03 |
Highlighted: representative current rate (4.5%). Your actual rate depends on LTV, credit score, term and lender.
Same Loan, Different Terms
Try the full calculator
Adjust loan amount, interest rate, term and overpayments for a personalised projection:
Similar Loan Amounts
FAQs
How much is the monthly payment on a £450,000 mortgage over 15 years?
Monthly repayments on £450,000 over 15 years at a representative 4.5% interest rate are £3,442.47. Over the full term you would pay £619,644.56, of which £169,644.56 is interest.
How much interest do I pay in total?
On a £450,000 mortgage over 15 years at 4.5%, total interest comes to £169,644.56 — that's 37.7% of the original loan amount on top.
Can I overpay to reduce interest?
Yes — most UK mortgages allow overpayments of 10% per year without early-repayment charges. Even small regular overpayments can save thousands. For example, paying £200 extra per month on this mortgage could shorten the term by several years.
What deposit would I need for a £450,000 mortgage?
Most UK lenders require at least 5% deposit (95% LTV). A 10% deposit (90% LTV) typically unlocks better rates. For a property where the mortgage is £450,000, you'd need roughly £23,684 (5% deposit) to £50,000 (10% deposit) on top.
Related
Disclaimer: Repayment figures assume an interest-only flat rate over the term. Your actual mortgage may include rate changes (after fixed period), product fees, and varying overpayments. Always get a Decision in Principle from a lender or broker for exact figures.