£800,000 Mortgage — Monthly Repayments
Monthly repayments on a £800,000 mortgage at 5.5% over 25 years are £4,912.7. The total amount repaid is £1,473,809.98 including £673,809.98 in interest.
A £800,000 mortgage puts you well above the average UK borrowing level. Monthly repayments at 5.5% over 25 years are £4,912.7. The total interest cost of £673,809.98 is 84% of the loan.
Your deposit and total property cost
A £800,000 mortgage with a 10% deposit means you're buying a property worth £880,000. Your deposit of £80,000 gives you a loan-to-value (LTV) ratio of 90%. A larger deposit — say 15% (£132,000) or 20% (£176,000) — 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% | £4,222.69 | £466,808.42 |
| 4.5% | £4,446.66 | £533,997.95 |
| 5% | £4,676.72 | £603,016.1 |
| 5.5% | £4,912.7 | £673,809.98 |
| 6% | £5,154.41 | £746,323.36 |
| 6.5% | £5,401.66 | £820,497.19 |
| 7% | £5,654.23 | £896,270.07 |
How the mortgage term affects your payments
| Term | Monthly payment | Total interest |
|---|---|---|
| 15 years | £6,536.67 | £376,600.17 |
| 20 years | £5,503.1 | £520,743.63 |
| 25 years | £4,912.7 | £673,809.98 |
| 30 years | £4,542.31 | £835,232.32 |
| 35 years | £4,296.13 | £1,004,374.7 |
What salary do you need for a £800,000 mortgage?
Most UK lenders use a 4.5x income multiple. To borrow £800,000, you'd typically need an annual salary of at least £177,778. Check your take-home pay on £178,000 to see if the monthly repayments fit your budget.
Stamp duty on this property
With a 10% deposit, a £800,000 mortgage means buying a property around £880,000. The stamp duty would be £35,000 (effective rate: 3.89%). Including your deposit and stamp duty, you'd need £115,000 upfront.
Frequently asked questions
How much is a £800,000 mortgage per month?
At 5.5% interest over 25 years, your monthly repayment on a £800,000 mortgage is £4,912.7. This includes both the capital repayment and interest. Over the full 25-year term, you'll pay £673,809.98 in interest on top of the original £800,000 loan.
What salary do I need for a £800,000 mortgage?
Using the standard 4.5x income multiple, you need a salary of at least £177,778 to borrow £800,000. Some lenders may offer up to 5.5x for applicants with strong credit and low outgoings, which would require a salary of £145,455.
Should I get a repayment or interest-only mortgage?
With a repayment mortgage on £800,000, you pay £4,912.7 per month and the loan is fully paid off after 25 years. An interest-only mortgage would cost just £3,667 per month, but you'd still owe the full £800,000 at the end of the term. Most residential mortgages in the UK are repayment.
Can I overpay my £800,000 mortgage?
Most lenders allow you to overpay up to 10% of the outstanding balance each year without early repayment charges. On a £800,000 mortgage, that's up to £80,000 in the first year. Regular overpayments can significantly reduce your total interest and shorten the mortgage term.