Housing tool
Mortgage Affordability Calculator UK
Use this UK mortgage affordability calculator to estimate how much you may be able to borrow, what property price that could support, and how different borrowing levels could feel based on your income, deposit, and monthly costs.
Include student loan repayments
Turn this on if you want them included in the estimate.
What this calculator checks
This estimate looks at income multiples, monthly mortgage payments, deposit size, monthly debt, and essential bills. It is designed to show a practical range rather than only a maximum borrowing figure.
Balanced borrowing estimate
£163,360
An indicative borrowing range that may feel more practical for some households.
Balanced property price estimate
£193,360
Includes the deposit entered above.
Mortgage affordability summary
More comfortable range
Affordability score: 73/100
Based on the figures entered, this borrowing level may feel more comfortable for some households.
Safer range
£165,504
About £711/month
Balanced range
£193,360
About £857/month
Stretch range
£221,216
About £1,003/month
What the estimate suggests
Estimated monthly take-home
£2,673
Estimated after tax, National Insurance, pension, and optional student loan.
Balanced housing share
32.1%
This shows how much of monthly take-home pay may go toward the estimated mortgage payment.
Extra deposit to reach the next range
£27,856
A larger deposit may improve affordability by reducing borrowing and monthly payments.
Why deposit size matters
A bigger deposit can lower the amount borrowed, reduce monthly payments, and sometimes improve the range of mortgage options available.
How mortgage affordability works
Mortgage affordability is usually based on a mix of income, deposit, monthly commitments, credit profile, interest rates and lender stress testing. A simple income multiple can be useful, but it does not show the whole picture.
This calculator combines income-multiple estimates with monthly repayment pressure. That means the result looks at both how much a lender may consider and how the payment may feel alongside debt, bills and household costs.
The figures are estimates only. Real mortgage offers depend on lender criteria, credit checks, product fees, deposit size, affordability checks and interest rates at the time you apply.
Income
Higher household income can increase borrowing potential, but lenders also check commitments.
Deposit
A larger deposit reduces borrowing and can improve monthly affordability.
Monthly costs
Debt, bills and existing commitments can reduce what feels affordable.
How to use this mortgage affordability result
Mortgage affordability is not just about lender income multiples. A borrowing amount can look possible on paper while still feeling tight once debt, bills, and everyday living costs are included.
The balanced range is often a useful reference point when comparing affordability.
This calculator gives estimates only and does not provide personal financial advice or mortgage advice.
Mortgage affordability calculator UK FAQs
How much can I borrow for a mortgage in the UK?
Many lenders use income multiples, often around 4 to 4.5 times income as a general guide, but affordability also depends on debt, bills, deposit size, and interest rates.
Is the maximum borrowing amount always a good target?
Not usually. Borrowing at the upper end may leave less room for savings, repairs, rising household costs and future rate changes.
Does a larger deposit help?
Yes. A larger deposit reduces the amount you need to borrow and may improve both monthly affordability and lender options.
Is this calculator mortgage advice?
No. It gives a general estimate only. A broker or lender can confirm what may be available based on your circumstances.
Next step
Check the rest of your buying costs
A useful next step is estimating stamp duty, checking your monthly budget, or comparing buying affordability with rent affordability.
Related housing pages
Stamp Duty Calculator UK
Estimate upfront tax costs when buying property in England or Northern Ireland.
Rent Affordability Calculator UK
Compare buying affordability with renting affordability.
Monthly Budget Planner
See whether a mortgage payment fits into your broader budget.
Take-Home Pay Calculator UK
Check your estimated monthly income before comparing borrowing levels.
Important
This tool provides general estimates and educational guidance only. It does not account for your full personal circumstances and should not be treated as financial advice or a personal recommendation.