How Much Mortgage Can I Afford in the UK in 2026?

The price on a property listing is only one part of deciding what you can afford. Your realistic budget combines the deposit you have saved, the mortgage a lender may offer and the monthly payment your household can manage. These three figures are connected, but they are not the same. Our mortgage affordability calculator gives you a quick estimate. This guide explains what sits behind it and how UK lenders usually assess an application.

How lenders decide what you can borrow

A lender starts with your income, then checks whether the proposed repayments look affordable after your other commitments. That means your salary matters, but it is not the whole answer. Regular loan and credit card payments, childcare, maintenance, travel, bills and other household costs can all reduce the amount available for a mortgage.

FCA responsible lending rules require lenders to consider verified income and expenditure. They must account for committed spending, basic household costs and the likely effect of future interest rate rises. A lender cannot approve a loan only because the property is valuable or might rise in price. Different lenders interpret risk in different ways, so two banks can reach different answers using the same household figures.

Your employment also matters. A permanent employee may show payslips, while a self-employed applicant will normally need evidence such as tax calculations, accounts or bank statements. Bonus, overtime, commission and freelance income may be accepted fully, partly or not at all, depending on how reliable it appears and the lender's policy.

Mortgage income multiples explained

A useful first estimate is to multiply gross household income by 4 to 4.5. MoneyHelper says the maximum is usually capped at around 4.5 times annual income, although this is not guaranteed. Some applicants may be offered more, while others will be offered less after the lender checks spending and circumstances.

For a joint application, lenders usually assess the combined income and the commitments of both people. Use our take-home pay calculator to see what reaches your bank account after Income Tax, National Insurance, pension and student loan deductions. That net figure is more useful when testing your own monthly budget.

Worked example: a couple earning £48,000

Imagine two buyers earn £28,000 and £20,000, giving them gross household income of £48,000. At 4.5 times income, their rough maximum mortgage is £216,000. If they have a £24,000 deposit, their possible property budget is £240,000, before allowing for buying costs.

A £216,000 repayment mortgage at an illustrative 5% interest rate over 25 years would cost about £1,262.71 a month. Across the full term, the interest would total about £162,814.35if the rate never changed and there were no fees or overpayments. At 7%, the same loan and term would cost about £1,526.64 a month. That £263.93 difference shows why affordability must account for rates changing, not just the first deal advertised.

The actual offer could be lower if the couple have car finance, childcare costs or large credit balances. It could also differ because of the lender's treatment of variable income. Use the mortgage calculator to compare rates and terms using your own loan amount.

How your deposit and LTV affect the result

Your loan-to-value ratio, or LTV, is the mortgage divided by the property price. A £216,000 mortgage on a £240,000 home is 90% LTV, so the deposit covers the remaining 10%. A larger deposit reduces the LTV and the amount you need to borrow. It may also open access to a wider range of deals or lower rates.

Do not put every available pound into the deposit without accounting for the rest of the purchase. You may need money for a survey, conveyancing, mortgage fees, removals, insurance and tax. Our guide to the real cost of buying a first home covers these items. You can also use the stamp duty calculator to estimate SDLT in England and Northern Ireland, including first-time buyer rules where applicable.

Build a monthly budget you can live with

The largest loan available is not automatically the right loan. Start with expected net income, then subtract mortgage payments, Council Tax, energy, water, insurance, food, transport, childcare, debt payments and regular saving. Flats and some estates may also have service charges. Leave room for repairs and costs that do not arrive every month.

Test the budget at a higher interest rate and after a possible change in income. A longer mortgage term reduces the monthly payment, but it normally increases the total interest paid. Compare the monthly result and total cost rather than choosing a term from the payment alone. If you already have a mortgage, the mortgage overpayment calculator shows how extra payments could change the term and interest, subject to your lender's rules and any early repayment charge.

Ways to improve mortgage affordability

Reducing expensive debt can free monthly income and improve the picture shown to a lender. Check your credit reports for mistakes, avoid taking on fresh borrowing before an application and keep evidence of income organised. Saving a larger deposit may reduce the required mortgage and LTV. The mortgage deposit guide explains common deposit bands and why the size matters.

None of these steps guarantees approval. A regulated mortgage adviser can explain products and lender criteria for your circumstances. Check that any adviser or lender is authorised by the FCA before acting.

Common affordability mistakes

• Treating 4.5 times income as a guaranteed offer. It is only a broad starting point.
• Forgetting purchase costs. A deposit is not the only cash needed before completion.
• Budgeting from gross pay. Your mortgage leaves your bank account from net pay.
• Ignoring debts and childcare. Regular commitments can materially reduce borrowing.
• Testing only the introductory rate. Payments may rise when a fixed deal ends or rates change.
• Using the maximum as a target. Your comfortable household budget may be lower than a lender's ceiling.

Use calculator results as a planning estimate, then compare them with a detailed household budget and professional mortgage advice where needed. A lender makes the final decision after reviewing the full application and supporting documents.