How Much Can I Borrow on a Mortgage in 2026?

Income multiples: the starting point

Most UK lenders use an income multiple to set the maximum amount they will lend. The standard multiple is 4.5 times your annual gross income — so if you earn £50,000, the typical maximum mortgage would be around £225,000. Some lenders will go up to 5 or 5.5 times income, but this is subject to stricter criteria.

The FCA's mortgage regulations cap the proportion of new lending above 4.5 times income at 15% of total lending for each lender — which means higher income multiples are available but not guaranteed. Lenders who do offer them tend to target specific borrower profiles: higher earners, certain professions, or those with large deposits.

Who qualifies for a higher income multiple?

Some lenders offer up to 5 or 5.5 times income to borrowers who meet specific criteria. These typically include: individuals with a gross income above £60,000–£75,000, buyers with a deposit of 15% or more, professionals in regulated fields such as medicine, law, dentistry, or accountancy (through dedicated professional mortgage products), and those with no unsecured debt and a clean credit history.

If you are a high earner or a professional, working with a whole-of-market broker is particularly valuable — they can identify which lenders offer enhanced multiples for your profile and income level.

The affordability assessment: beyond the income multiple

Since the Mortgage Market Review in 2014, lenders must conduct a full affordability assessment — not just apply an income multiple. This means they look at your verified monthly income alongside all committed expenditure: credit cards, car finance, student loans, childcare, and regular living costs.

Lenders also stress test your mortgage against a hypothetical higher interest rate — typically the current pay rate plus 3%. This is designed to ensure you can still afford repayments if rates rise. Even if you meet the income multiple, failing the stress test can result in a lower offer.

Joint applications

Applying with a partner or co-buyer allows lenders to combine both incomes and apply the multiple to the combined figure. Two buyers each earning £40,000 could borrow between £320,000 and £440,000 — significantly more than either could access alone. Both applicants' credit profiles and outgoings are assessed, so the weaker profile can affect the overall offer.

Self-employed: how is income assessed?

Lenders typically require at least two years of self-employed accounts or HMRC tax calculations (SA302s). For a sole trader or partnership, lenders usually use the average of the last two years' net profit. For company directors, they typically take salary plus dividends.

Some specialist lenders use only the most recent year's figures — useful if your income has grown significantly. Others may use a three-year average. Working with a broker who understands self-employed mortgage criteria is essential to ensure your income is presented in the most favourable way.

How a broker helps you borrow more

Going directly to your own bank or a single lender means you only see their criteria and income cap. A whole-of-market broker has access to over 90 lenders — including those not available directly to the public — and can match your specific profile to the lender most likely to offer the highest amount at the most suitable rate.

Brokers also know which lenders offer enhanced multiples for your income level, profession, or deposit size, and can present your income correctly if you are self-employed, contracting, or have complex pay structures including bonus, commission, or rental income.