UK Mortgage Affordability Calculator
See how much you could borrow from your income, and the monthly payment on that loan.
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How to do it
- 1Fill in the boxes
Type your numbers or pick the options you need.
- 2See the result
The answer updates right away as you change a value.
- 3Use it
Copy the result or note it down. Nothing is sent anywhere.
About this tool
Enter your income (and a partner's), your deposit, the rate and the term. Lenders usually offer about 4 to 5 times income, so choose a multiple. The result shows the loan, the home price it could buy and the monthly payment. Rates and thresholds are for the 2026-27 tax year and can change. A guide only, check gov.uk for the official figures.
How lenders decide
Banks use an income multiple of roughly 4 to 4.5 times, sometimes up to 5 or 5.5 for strong applicants, and then check your spending and credit file. This tool applies the multiple you choose and adds your deposit to estimate the price you can afford.
Example
Two people earning £45,000 and £30,000 at 4.5 times can borrow £337,500. With a £40,000 deposit the price is about £377,500.
Tips
Test the payment at a rate 2 or 3 points higher to see how you would cope if rates rise. Remember stamp duty, legal fees, surveys and moving costs.
Frequently asked questions
How much will a bank lend?
Typically 4 to 4.5 times income, up to about 5.5 times for strong applications.
Does my deposit change the loan?
Not the multiple, but a bigger deposit lowers the loan to value and can unlock better rates.
Is the payment capital and interest?
Yes, a repayment mortgage over the term you choose.
What else should I budget for?
Stamp duty, legal fees, valuation, surveys, insurance and moving costs.