Mortgage Affordability Calculator
Get an illustrative estimate of how much you could potentially borrow for a mortgage, based on income, deposit and existing debts.
Optional - leave as 0 for a sole application.
Credit cards, loans, car finance and similar - a monthly total.
Used for the example repayment only.
Estimated borrowing range
Illustrative range
£160,000 – £180,000
Income multiples
This is an illustrative estimate only, not a mortgage offer or approval. Lenders don't simply apply a fixed income multiple - actual affordability depends on their own criteria, your outgoings, dependants, credit profile and interest-rate stress tests.
How this estimate is worked out
This calculator applies commonly used income multiples (4×, 4.5× and 5× your combined income) to give an illustrative borrowing range. If you have existing monthly debt commitments, we deduct their annual total from your income first, since ongoing debts reduce what a lender is likely to consider you can afford.
This is not how any single lender actually makes a decision. Real affordability assessments factor in your spending, dependants, credit history, and an interest-rate stress test to check you could still afford repayments if rates rose. Two lenders can offer very different amounts for the same income. Treat this figure as a starting point for your research, not a mortgage offer or approval.
Once you have a mortgage amount in mind, use the Mortgage Repayment Calculator to see what your monthly repayments could look like.