Free calculator
Mortgage affordability calculator
See an illustrative range of how much you might borrow for a mortgage, based on your income, monthly commitments and deposit. A rule-of-thumb range to explore — a lender's own assessment is more detailed.
How much might a lender let you borrow? This gives a rough guide from a common market income-multiple range — around 4 to 4.5 times income. Lenders differ, so it's a range, not a promise: a lender or broker assesses your actual borrowing.
This calculator, the result and the breakdown are free for everyone, no account needed.
Save this and pick up where you left off
Create a free Blooom account to save this result and reuse the figures you enter across your calculators — so you type less and see the numbers that fit you.
Blooom+ adds the ongoing layer: it keeps an eye on this figure and tells you when it changes, and gives you the deeper AI analysis across your whole money picture. See what Blooom+ does
How it works
- 1Enter your gross annual income, and a second applicant's income if you're buying together.
- 2Add any regular monthly commitments a lender would take into account, such as loan, car-finance or credit-card minimum payments.
- 3The calculator applies a typical income-multiple range to your adjusted income to picture a lower and upper borrowing figure.
- 4Add your deposit to see an illustrative maximum property price — borrowing plus deposit.
Worked example
A single applicant on £40,000 a year, with no other monthly commitments. The calculator applies a typical income-multiple range to show a lower and upper illustrative borrowing figure.
This is a market rule-of-thumb, not a lender's decision. What you can actually borrow depends on the lender, your credit history, spending and the deposit.
Frequently asked questions
How much can I borrow for a mortgage?
Most lenders lend a multiple of your income, often around four to four-and-a-half times, adjusted for your commitments and deposit. Enter your income to see an illustrative range — the exact figure is set by the lender.
Does my deposit change how much I can borrow?
Your deposit doesn't usually change the borrowing multiple, but adding it to the borrowing figure pictures the maximum property price you could look at.
What counts as a monthly commitment?
Regular fixed payments a lender nets off before applying the multiple — such as loan, car-finance or credit-card minimums and childcare. Day-to-day living costs are modelled separately by lenders.
Is this the same as a mortgage in principle?
No. This is an illustrative range only. A mortgage in principle is a soft check from an actual lender based on your full circumstances.