Mortgage borrowing calculator

Estimate how much you may be able to borrow based on your income and commitments.

Income

£
£10k£300k
£
£0£300k
£

Monthly Commitments

£
£0£2k/mo
£
£0£30k
£
£0£2k/mo

Deposit & Rate

£
£0£500k
% p.a.
0.5%12%
yrs
5yrs40yrs

Your Borrowing Estimate

Maximum Borrowing
income-based estimate
Total Budget
borrowing + deposit
Est. Monthly Payment
repayment basis
Debt-to-income ratio (monthly)
Comfortable
≤36%
Stretched
50%
Max
Income Breakdown
Primary income (gross annual)
Combined qualifying income
Income multiplier applied
Monthly Commitments Impact
Gross monthly income
Estimated mortgage payment
Remaining net monthly

Typical Lender Estimates

This calculator provides an illustrative estimate only and does not constitute financial advice. Actual borrowing capacity will depend on your lender's individual affordability assessment, credit score, expenditure, and prevailing rates. Most UK lenders use income multipliers of 4×–5.5× and apply additional affordability stress tests at higher rates. Always speak with a qualified mortgage adviser or broker before making any financial decision.

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