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.
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.