Mortgage Affordability Calculator 2026
Find out how much you can borrow based on your income, deposit, and monthly outgoings. UK, US, Canada and Australia lending rules built in — including stress tests, DTI ratios and LVR calculations.
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Your Financial Details
Income
£
£
Leave as 0 if single applicant
Deposit & Outgoings
£
£
Credit cards, loans, car finance etc.
Mortgage Details
%
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Your Borrowing Power
Maximum Borrowing
£0
Maximum Property Price
£0
Monthly Repayment
£0
Loan-to-Value (LTV)
0%
Income Multiple Used
0x
Borrowing Range
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Frequently Asked Questions
How much can I borrow for a mortgage in the UK? +
Most UK lenders will lend between 4 and 4.5 times your gross annual income. Some lenders offer 5x or even 5.5x for higher earners or professionals. Joint applications are based on combined income. Lenders also run a stress test at approximately 3% above the pay rate to check affordability.
What is the mortgage stress test in Canada? +
Canadian lenders must qualify you at the higher of your contract rate plus 2%, or the Bank of Canada benchmark stress test rate (currently 5.25%). This means you must prove you can afford payments at a higher rate than your actual mortgage rate.
How does LVR affect my Australian mortgage? +
Loan to Value Ratio (LVR) is your loan amount as a percentage of the property value. In Australia, an LVR above 80% requires Lenders Mortgage Insurance (LMI), which can add thousands to your purchase cost. Most lenders cap at 95% LVR.
What is the US debt-to-income ratio rule? +
US lenders typically require a total debt-to-income (DTI) ratio of 43% or less for conventional loans. Front-end DTI (housing costs only) should be under 28%. FHA loans may allow up to 50% DTI with compensating factors.
Does my deposit size affect how much I can borrow? +
Yes — a larger deposit reduces the Loan to Value Ratio (LVR/LTV), which can unlock better rates and avoid insurance premiums. In the UK, a 15%+ deposit usually gets the best rates. In Australia, 20% avoids LMI.
⚠️ This calculator provides estimates only. Actual borrowing capacity depends on your lender's criteria, credit score, employment type, and other factors. Always speak to a qualified mortgage adviser.