£1,250,000 Mortgage Repayments (2026)
A £1,250,000 repayment mortgage at 5% over 25 years costs £7,307 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% | £8,936 | £7,249 | £6,258 | £5,613 | £5,166 |
| 4% | £9,246 | £7,575 | £6,598 | £5,968 | £5,535 |
| 4.5% | £9,562 | £7,908 | £6,948 | £6,334 | £5,916 |
| 5% | £9,885 | £8,249 | £7,307 | £6,710 | £6,309 |
| 5.5% | £10,214 | £8,599 | £7,676 | £7,097 | £6,713 |
| 6% | £10,548 | £8,955 | £8,054 | £7,494 | £7,127 |
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 £1,250,000 mortgage?
At a 5% interest rate over 25 years, a £1,250,000 repayment mortgage costs £7,307 a month — £2,192,213 repaid in total over the term. At 4% the same mortgage is £6,598 a month, and stretching to 30 years at 5% lowers the payment to £6,710.
How does the term length change the cost?
Longer terms cut the monthly payment but increase the total interest dramatically. On £1,250,000 at 5%, a 15-year term costs £9,885 a month (£1,779,286 total), while a 35-year term costs £6,309 a month but £2,649,610 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.