£600,000 Mortgage Repayments (2026)
A £600,000 repayment mortgage at 5% over 25 years costs £3,508 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% | £4,289 | £3,480 | £3,004 | £2,694 | £2,480 |
| 4% | £4,438 | £3,636 | £3,167 | £2,864 | £2,657 |
| 4.5% | £4,590 | £3,796 | £3,335 | £3,040 | £2,840 |
| 5% | £4,745 | £3,960 | £3,508 | £3,221 | £3,028 |
| 5.5% | £4,903 | £4,127 | £3,685 | £3,407 | £3,222 |
| 6% | £5,063 | £4,299 | £3,866 | £3,597 | £3,421 |
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 £600,000 mortgage?
At a 5% interest rate over 25 years, a £600,000 repayment mortgage costs £3,508 a month — £1,052,262 repaid in total over the term. At 4% the same mortgage is £3,167 a month, and stretching to 30 years at 5% lowers the payment to £3,221.
How does the term length change the cost?
Longer terms cut the monthly payment but increase the total interest dramatically. On £600,000 at 5%, a 15-year term costs £4,745 a month (£854,057 total), while a 35-year term costs £3,028 a month but £1,271,813 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.