Tool · repayment calculator
UK mortgage repayment calculator
Enter a loan amount (or price and deposit), a rate, and a term to see the monthly payment and the total interest over the life of the mortgage. Pre-filled with the Bank of England's latest 4.81% two-year fixed rate. Nothing you enter leaves your browser.
Data updated 2026-06-30
- 3.75%
- Bank of England base rate
- 4.81%
- quoted 2-yr fix, June 2026
How this calculator works
It uses the standard UK amortisation formula M = P × (r(1+r)ⁿ) / ((1+r)ⁿ − 1), where P is the loan (price − deposit), r the monthly rate, and n the term in months. The default rate is the Bank of England's latest quoted two-year fixed rate at 75% LTV, change it to model any deal. See the methodology for sources.
According to the Bank of England and HM Land Registry, whose House Price Index is built from more than 1,000,000 registered property transactions a year, the rate that pre-fills this calculator is loaded from official UK data published under the Open Government Licence, and the Financial Conduct Authority regulates the lenders whose binding offers any estimate here only approximates. Our methodology documents each source and its refresh cadence.
Every figure on PlainMortgage is rendered directly from Bank of England and HM Land Registry data, no number is typed in by an editor. This page draws directly on Bank of England and HM Land Registry data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-06-30.