£170,000 Mortgage Repayments (2026)
A £170,000 repayment mortgage at 5% over 25 years costs £994 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% | £1,215 | £986 | £851 | £763 | £703 |
| 4% | £1,257 | £1,030 | £897 | £812 | £753 |
| 4.5% | £1,300 | £1,076 | £945 | £861 | £805 |
| 5% | £1,344 | £1,122 | £994 | £913 | £858 |
| 5.5% | £1,389 | £1,169 | £1,044 | £965 | £913 |
| 6% | £1,435 | £1,218 | £1,095 | £1,019 | £969 |
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 £170,000 mortgage?
At a 5% interest rate over 25 years, a £170,000 repayment mortgage costs £994 a month — £298,141 repaid in total over the term. At 4% the same mortgage is £897 a month, and stretching to 30 years at 5% lowers the payment to £913.
How does the term length change the cost?
Longer terms cut the monthly payment but increase the total interest dramatically. On £170,000 at 5%, a 15-year term costs £1,344 a month (£241,983 total), while a 35-year term costs £858 a month but £360,347 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.