The quick rule of thumb is “4.5 times your salary” — but your deposit, your debts and a lender’s affordability check can push the real figure well above or below that.
As a starting point, most UK lenders will offer around 4 to 4.5 times your gross annual income — or your combined income for a joint application. So a £40,000 salary points to roughly £180,000 of borrowing.
But that’s only the headline. Your deposit, existing debts and an affordability assessment all adjust the real number up or down.
“How much can I borrow?” is the question that decides which homes you can even look at. Lenders answer it in two stages: a rough income multiple, then a detailed affordability check.
The headline cap is a multiple of your gross (pre-tax) salary. As a benchmark:
The multiple sets your loan; add your deposit on top to get the property price you can target. A £180,000 loan plus a £20,000 deposit means a ~£200,000 home.
Hitting the income multiple isn’t enough — the lender also checks you can comfortably afford the payments. They look at:
If your committed outgoings are high, the affordability check can pull your offer below the income multiple. If your finances are clean, you may reach the top of the range.
See the monthly cost, total interest and affordability of any loan amount, so you borrow what’s comfortable, not just what’s possible.
Just because you can borrow the maximum doesn’t mean you should. Borrowing to the limit leaves no buffer if rates rise or your income dips. Focus on a monthly payment you’re comfortable with.
Most UK lenders cap borrowing at around 4 to 4.5 times gross annual income. Some stretch to 5 or 5.5 times for higher earners or certain professions, but 4.5× is the common benchmark. Joint applications usually use a multiple of combined income.
Yes. A bigger deposit lowers your loan-to-value (LTV), which unlocks better rates and can make lenders comfortable lending nearer the top of their range. It also cuts the total you need to borrow for a given price.
Beyond income multiples, lenders check you can afford the payments by looking at outgoings, debts, dependants and the payment at a higher stress-test rate. Large commitments or childcare can reduce the offer below the headline multiple.
Yes. Car finance, credit cards and loans reduce your disposable income, lowering what a lender will offer. Clearing or reducing debts before applying can increase your borrowing capacity.
This article is general information, not financial advice. Lender criteria, income multiples and affordability rules vary and change over time. For an accurate figure, speak to a qualified, regulated mortgage adviser or lender.