Monthly payment on a £100,000 mortgage
Monthly repayment£556
Total repaid£166,750
Total interest£66,750
Payment at alternative rates
- 3.5% over 25 years
- £501/month
- 4.5% over 25 years
- £556/month
- 5.5% over 25 years
- £614/month
- 6.5% over 25 years
- £675/month
How this example is calculated
Uses the standard capital-and-interest amortisation formula with 300 monthly payments. Fees, rate changes and overpayments are excluded.
Last reviewed: 15 July 2026 · MoneyHelper: Mortgage calculator ↗
Results are estimates for planning and are not personal financial advice.
Frequently asked questions
Is 4.5% a mortgage offer?
No. It is an illustration; use the rate offered by a lender.
Does this include fees?
No. Arrangement, valuation, legal and early repayment fees are excluded.