£310,000 Mortgage Repayments (2026)
A £310,000 repayment mortgage at 5% over 25 years costs £1,812 a month. The table below covers rates from 3.5% to 6% and terms from 15 to 35 years.
| Rate | 15 yrs | 20 yrs | 25 yrs | 30 yrs | 35 yrs |
|---|---|---|---|---|---|
| 3.5% | £2,216 | £1,798 | £1,552 | £1,392 | £1,281 |
| 4% | £2,293 | £1,879 | £1,636 | £1,480 | £1,373 |
| 4.5% | £2,371 | £1,961 | £1,723 | £1,571 | £1,467 |
| 5% | £2,451 | £2,046 | £1,812 | £1,664 | £1,565 |
| 5.5% | £2,533 | £2,132 | £1,904 | £1,760 | £1,665 |
| 6% | £2,616 | £2,221 | £1,997 | £1,859 | £1,768 |
Different amount or rate? Use the mortgage repayment calculator.
How it's worked out
Figures use the standard repayment-mortgage formula (capital and interest, equal monthly payments): payment = loan × monthly rate ÷ (1 − (1 + monthly rate)−months). They assume the rate stays the same for the whole term — in practice you'll re-fix every few years. Product fees, valuation fees and overpayments are not included.
FAQ
What are the monthly repayments on a £310,000 mortgage?
At a 5% interest rate over 25 years, a £310,000 repayment mortgage costs £1,812 a month — £543,669 repaid in total over the term. At 4% the same mortgage is £1,636 a month, and stretching to 30 years at 5% lowers the payment to £1,664.
How does the term length change the cost?
Longer terms cut the monthly payment but increase the total interest dramatically. On £310,000 at 5%, a 15-year term costs £2,451 a month (£441,263 total), while a 35-year term costs £1,565 a month but £657,103 in total — the longer term repays far more interest for the same loan.
Are these figures exact quotes?
No — they are standard repayment-mortgage arithmetic (capital and interest, fixed rate for the whole term) to help you budget. A real offer depends on your deal period, fees, loan-to-value and credit profile, and rates change when a fixed deal ends. Interest-only mortgages cost less per month but repay none of the capital.