Mortgage calculator
Monthly payment, total interest, and total repayable on a repayment mortgage.
The calculator
How the mortgage calculator works
Enter the amount you want to borrow, the interest rate and the term, and the calculator works out your monthly repayment, the total interest you will pay over the life of the loan and the total amount repayable. It assumes a standard capital-and-interest (repayment) mortgage where the balance reduces each month.
Use it to compare deals, sense-check affordability before you apply, or see how overpaying or a shorter term changes the total cost. Remember that lenders also assess your income, outgoings and credit history, so the figure they offer may differ from the illustration here.
Frequently asked
Is the monthly payment fixed?+
The calculator assumes a fixed rate for the whole term. In practice most mortgages are fixed for an initial period and then move to a variable rate, so your payment can change when the deal ends.
Does a shorter term really save money?+
Yes — a shorter term means higher monthly payments but far less total interest. Try a few terms in the calculator to see the difference.