£400,000 Mortgage — Monthly Repayments
Monthly repayments on a £400,000 mortgage at 5.5% over 25 years are £2,456.35. The total amount repaid is £736,904.99 including £336,904.99 in interest.
Borrowing £400,000 is a significant commitment. At 5.5% over 25 years, you'll pay £2,456.35 per month and £336,904.99 in total interest — 84% of the original loan amount.
Your deposit and total property cost
A £400,000 mortgage with a 10% deposit means you're buying a property worth £440,000. Your deposit of £40,000 gives you a loan-to-value (LTV) ratio of 90%. A larger deposit — say 15% (£66,000) or 20% (£88,000) — would reduce your monthly payments and may qualify you for a lower interest rate. Lenders typically offer their best rates at 60% LTV or below.
Monthly payments at different interest rates
| Rate | Monthly payment | Total interest |
|---|---|---|
| 4% | £2,111.35 | £233,404.21 |
| 4.5% | £2,223.33 | £266,998.97 |
| 5% | £2,338.36 | £301,508.05 |
| 5.5% | £2,456.35 | £336,904.99 |
| 6% | £2,577.21 | £373,161.68 |
| 6.5% | £2,700.83 | £410,248.59 |
| 7% | £2,827.12 | £448,135.04 |
How the mortgage term affects your payments
| Term | Monthly payment | Total interest |
|---|---|---|
| 15 years | £3,268.33 | £188,300.09 |
| 20 years | £2,751.55 | £260,371.82 |
| 25 years | £2,456.35 | £336,904.99 |
| 30 years | £2,271.16 | £417,616.16 |
| 35 years | £2,148.07 | £502,187.35 |
What salary do you need for a £400,000 mortgage?
Most UK lenders use a 4.5x income multiple. To borrow £400,000, you'd typically need an annual salary of at least £88,889. Check your take-home pay on £89,000 to see if the monthly repayments fit your budget. You can also view the full mortgage affordability breakdown for a £90,000 salary.
Stamp duty on this property
With a 10% deposit, a £400,000 mortgage means buying a property around £440,000. The stamp duty would be £12,500 (effective rate: 2.78%). First-time buyers would pay just £7,500, saving £5,000. Including your deposit and stamp duty, you'd need £52,500 upfront.
Frequently asked questions
How much is a £400,000 mortgage per month?
At 5.5% interest over 25 years, your monthly repayment on a £400,000 mortgage is £2,456.35. This includes both the capital repayment and interest. Over the full 25-year term, you'll pay £336,904.99 in interest on top of the original £400,000 loan.
What salary do I need for a £400,000 mortgage?
Using the standard 4.5x income multiple, you need a salary of at least £88,889 to borrow £400,000. Some lenders may offer up to 5.5x for applicants with strong credit and low outgoings, which would require a salary of £72,727.
Should I get a repayment or interest-only mortgage?
With a repayment mortgage on £400,000, you pay £2,456.35 per month and the loan is fully paid off after 25 years. An interest-only mortgage would cost just £1,833 per month, but you'd still owe the full £400,000 at the end of the term. Most residential mortgages in the UK are repayment.
Can I overpay my £400,000 mortgage?
Most lenders allow you to overpay up to 10% of the outstanding balance each year without early repayment charges. On a £400,000 mortgage, that's up to £40,000 in the first year. Regular overpayments can significantly reduce your total interest and shorten the mortgage term.