OverpayWise

Mortgage intelligence

Free mortgage affordability calculator

Estimate how much mortgage you may be able to afford.

Compare income, deposit, debts, expenses, mortgage rate, and term to estimate a possible mortgage size and property budget.

Dual-limit estimate

Uses the lower of an income multiple and a monthly repayment limit after regular debts.

Estimated property budget

£371,429

Based on a mortgage of £331,429 plus your deposit.

Inputs

Affordability details

Estimate

Results

Estimated property budget

£371,429

Maximum mortgage

£331,429

Monthly payment

£1,938

Debt-to-income

35%

Monthly buffer

£2,263

The monthly repayment limit is the binding limit in this estimate. Assumes a 35% gross-income repayment threshold after monthly debt payments.

Affordability checks

What shaped this estimate

Income multiple limit

£337,500

Based on 4.5x household income.

Repayment-based limit

£331,429

Based on a maximum payment of £1,938 per month.

Regular costs buffer

£2,263

Estimated monthly income left after debts, expenses, and the mortgage payment.

Important disclaimer

This calculator provides estimates only and does not constitute mortgage advice or financial advice. Lender affordability checks can vary significantly and may include credit history, dependants, spending patterns, stress testing, fees, and local lending rules.