Mortgage Affordability Calculator
Enter your income, a second income if you have one, your deposit, the rate and the term.
Lenders also test your outgoings and debts, so this is only a guide. Uses the 2026/27 UK tax year figures for England, Wales and Northern Ireland, checked against GOV.UK on 18 October 2026.
Worked examples
A single income
£45,000 income, £30,000 deposit, 4.8% over 25 years, 4.5 times
£202,500 mortgage, £232,500 property
The monthly payment is £1,160.32, and the loan to value is 87.1%.
About Mortgage Affordability Calculator
Lenders mostly decide how much to lend from your income. Most offer about 4 to 4.5 times your yearly income, some go as far as 5.5 times for higher earners or strong applications, and a few offer more. If two people apply together, their incomes are added. This page applies 4, 4.5, 5 and 5.5 times to your income to show the range you might expect.
For each multiple it gives the mortgage, the property price you could look at with your deposit, the monthly payment at the rate and term you enter, and that payment as a share of your estimated take-home pay. A high share is a warning even where a lender would say yes. Lenders also check your debts and outgoings and test whether you could cope if rates rose, so the offer from a lender may be lower than these figures.
How to use Mortgage Affordability Calculator
- Enter your income, and a second income if you are applying with someone.
- Enter your deposit.
- Enter the mortgage rate you expect and the term in years.
- Read the table and compare the monthly payment with your take-home pay.
Common uses
- Setting a house-hunting budget
- Checking how a bigger deposit changes the price range
- Seeing how much a second income adds
- Judging whether a lender's maximum is comfortable
Sources
Last reviewed 18 October 2026.
Frequently asked questions
How much can I borrow for a mortgage?
Typically 4 to 4.5 times your gross yearly income, and up to 5.5 times in some cases. On a £45,000 income, 4.5 times is £202,500.
Does my deposit change how much I can borrow?
The multiple sets the maximum loan. The deposit sets the price you can pay, since the price is the mortgage plus the deposit. A bigger deposit may also bring a lower rate.
Why might a lender offer less?
Lenders assess your regular outgoings, credit commitments, dependants and credit history, and test your payments at a higher rate. Debts such as car finance and credit cards reduce what you can borrow.
What share of take-home pay is sensible?
There is no fixed rule. Many people feel comfortable spending around a third of take-home pay on the mortgage, but it depends on your other costs. Leave room for rate rises and repairs.
How is take-home pay estimated?
With the 2026/27 income tax and National Insurance rates for England, Wales and Northern Ireland, ignoring pension, student loan and tax codes.