The monthly repayment on a £300,000 mortgage is £1,667.50 at 4.5% interest over 25 years. Over the full term you pay £200,249 in interest, so you repay £500,249 in total.
Monthly repayment on £300,000 (4.5%, 25 years)
£1,667.50
- Total interest
- £200,249
- Total repaid
- £500,249
- Interest as share of loan
- 67%
Monthly repayment on £300,000 by interest rate and term
| Rate | 20 years | 25 years | 30 years | 35 years |
|---|---|---|---|---|
| 3.5% | £1,739.88 | £1,501.87 | £1,347.13 | £1,239.87 |
| 4% | £1,817.94 | £1,583.51 | £1,432.25 | £1,328.32 |
| 4.5% | £1,897.95 | £1,667.50 | £1,520.06 | £1,419.77 |
| 5% | £1,979.87 | £1,753.77 | £1,610.46 | £1,514.06 |
| 5.5% | £2,063.66 | £1,842.26 | £1,703.37 | £1,611.05 |
| 6% | £2,149.29 | £1,932.90 | £1,798.65 | £1,710.57 |
Total interest on £300,000 by term
| Term | Monthly repayment | Total interest | Total repaid |
|---|---|---|---|
| 20 years | £1,897.95 | £155,508 | £455,508 |
| 25 years | £1,667.50 | £200,249 | £500,249 |
| 30 years | £1,520.06 | £247,220 | £547,220 |
| 35 years | £1,419.77 | £296,303 | £596,303 |
On an interest-only mortgage of £300,000 at 4.5%, you would pay £1,125.00 a month, but still owe the full £300,000 at the end of the term.
Year-by-year repayment of £300,000
| Principal repaid | Interest paid | Balance left | |
|---|---|---|---|
| Year 5 | £36,426 | £63,624 | £263,574 |
| Year 10 | £45,598 | £54,452 | £217,975 |
| Year 15 | £57,080 | £42,970 | £160,896 |
| Year 20 | £71,452 | £28,598 | £89,444 |
| Year 25 | £89,444 | £10,606 | £0 |
Paying a little extra each month
If you pay 10% more each month (£1,834.25 instead of £1,667.50), you clear the £300,000 mortgage in 21 years 2 months instead of 25 years, 3 years 10 months sooner, and save about £34,611 in interest. Most UK fixed-rate deals let you overpay up to 10% of the balance each year without an early repayment charge.
Compare nearby amounts
| Loan amount | Monthly repayment | Total interest |
|---|---|---|
| £225,000 | £1,250.62 | £150,187 |
| £250,000 | £1,389.58 | £166,874 |
| £275,000 | £1,528.54 | £183,562 |
| £300,000 | £1,667.50 | £200,249 |
| £325,000 | £1,806.46 | £216,937 |
| £350,000 | £1,945.41 | £233,624 |
| £375,000 | £2,084.37 | £250,312 |
Change the numbers
The calculator below starts with a property price of £375,000 and a 20% deposit, so the mortgage is £300,000.
Frequently asked questions
What is the monthly repayment on a £300,000 mortgage?
At 4.5% over 25 years, the monthly repayment on a £300,000 mortgage is £1,667.50. Over 20 years it would be £1,897.95.
How much interest will I pay on a £300,000 mortgage?
About £200,249 at 4.5% over 25 years, so you repay £500,249 in total. Over 20 years the interest drops to £155,508.
How much does a 1% lower rate save on £300,000?
At 3.5% instead of 4.5%, the monthly repayment falls by £165.63 to £1,501.87, saving £49,688 over 25 years.
What salary do I need for a £300,000 mortgage?
Most UK lenders offer up to about 4.5 times your yearly income, so a £300,000 mortgage usually needs a household income of around £66,667. Lenders also check that you could afford £1,667 a month, and more if rates rise.
Capital and interest repayment mortgage. Rates shown are examples, not current deals; fees and insurance are not included. An estimate. Related: All mortgage amounts · mortgage calculator · Stamp Duty by house price · Mortgage overpayment calculator