More from Life Figured: See mortgage examples for £40k, £50k and £60k salaries
"How much can I borrow?" sounds like a simple multiplication problem — take your income, multiply it by four or four and a half, done. And that headline multiple is a reasonable starting point. But it's not the number a lender will actually offer you, and the gap between the two catches a lot of people out.
UK mortgage borrowing examples at £40k, £50k and £60k
To see why the headline multiple is only a starting point, consider three illustrative gross annual incomes. At 4.5 times income, £40,000 would suggest £180,000 borrowing, £50,000 would suggest £225,000, and £60,000 would suggest £270,000. These are arithmetic examples, not lender offers, and assume no adjustments for existing commitments.
A deposit adds to your property budget, but buying costs still need to be funded. A £25,000 deposit alongside an illustrative £225,000 mortgage gives a £250,000 headline budget before taxes and fees. See the UK salary and property budget examples, then check the monthly mortgage repayment calculator to explore interest-rate sensitivity.
The income multiple is a starting point, not a promise
Most UK lenders advertise a multiple of 4 to 4.5 times income as standard, with some stretching to 5 or even 6.5 times for higher earners in certain professions. That figure is useful for a rough estimate, which is exactly what our calculator gives you. But it's not what determines your actual offer — that comes from a full affordability assessment.
What the affordability assessment actually checks
Behind the headline multiple, lenders run a detailed look at your real finances: existing debts and their monthly repayments, regular outgoings like childcare or subscriptions, and — critically — a stress test that checks whether you could still afford the mortgage if interest rates rose by several percentage points from whatever rate you're being offered today. Two applicants with identical incomes can get very different offers if one has a car loan and a history of overspending on their current account, and the other doesn't.
Why your deposit size matters beyond just the loan amount
A bigger deposit doesn't just shrink the amount you need to borrow — it usually unlocks a better interest rate, because you're borrowing at a lower loan-to-value ratio. A better rate makes the stress test easier to pass, which can increase how much you're able to borrow even before you factor in the smaller loan itself. It's a compounding effect that the simple income-multiple math doesn't capture.
Treat the calculator as a first estimate, not a mortgage offer
Getting an Agreement in Principle from an actual lender — or better, speaking to a mortgage broker who can compare several lenders' criteria — is the only way to know your real number. Different lenders weigh income, debt, and profession differently, so the same person can get meaningfully different offers from different banks. Use the estimate here to get in the right ballpark before that conversation, not as a substitute for it.
This article is general information, not personal financial advice. If you're making a real decision based on these numbers, it's worth talking to a qualified mortgage broker or financial adviser who knows your full situation.
