Mortgage Repayments
Mortgage Repayments on £400,000 Over 15 Years
Monthly repayments on a £400,000 UK mortgage over 15 years at a representative 4.5% interest rate are £3,059.97. Total cost over the term: £550,795.17, of which £150,795.17 is interest.
Monthly
£3,059.97
Total paid
£550,795.17
Interest
£150,795.17
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% | £2,859.53 | £514,715.43 | £114,715.43 |
| 4.00% | £2,958.75 | £532,575.31 | £132,575.31 |
| 4.50% | £3,059.97 | £550,795.17 | £150,795.17 |
| 5.00% | £3,163.17 | £569,371.41 | £169,371.41 |
| 5.50% | £3,268.33 | £588,300.09 | £188,300.09 |
| 6.00% | £3,375.43 | £607,576.92 | £207,576.92 |
Highlighted: representative current rate (4.5%). Your actual rate depends on LTV, credit score, term and lender.
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FAQs
How much is the monthly payment on a £400,000 mortgage over 15 years?
Monthly repayments on £400,000 over 15 years at a representative 4.5% interest rate are £3,059.97. Over the full term you would pay £550,795.17, of which £150,795.17 is interest.
How much interest do I pay in total?
On a £400,000 mortgage over 15 years at 4.5%, total interest comes to £150,795.17 — 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 £400,000 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 £400,000, you'd need roughly £21,053 (5% deposit) to £44,444 (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.