Mortgage affordability & repayment

UK income multiples, monthly payments and rate scenarios.

How much can you borrow?

Your annual income

Partner's income (if joint)

Deposit

Typical borrowing (4.5× income)

£247,500

Max property price

£297,500

Some lenders stretch to 5× (£275,000) if income is over £75k or debt-free.

Purchase price

Interest rate (%)

Term (years)

Loan £300,000 · LTV 86%

Monthly payment

£1,520

Total interest over term: £247,220

If the rate changes

3.5%£1,347/mo

4.5%£1,520/mo

6.5%£1,896/mo

4.5× income is the standard FCA/PRA cap. Lenders can lend 15% of new loans above 4.5×, so a small number stretch to 5–5.5× for high earners.
LTV bands typically price at 60%, 75%, 80%, 85%, 90% and 95%. Crossing a band down can save 0.3–0.6% on the rate.
Stress test: most lenders assume rate = product rate + 1% for affordability.
This is an estimate. Speak to an FCA-authorised broker for a decision in principle.

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