Calculate how much you can borrow based on your income, expenses, and deposit. Get instant results with our free, professional affordability calculator updated for 2025 lending criteria.
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Get answers to common questions about mortgage affordability calculations
Most UK lenders will lend between 4 to 4.5 times your annual income. However, this can vary based on your credit score, existing debts, deposit size, and the lender's criteria. Some specialist lenders may offer up to 5-6 times income in certain circumstances.
Lenders typically consider basic salary, guaranteed bonuses, overtime (if regular), commission (usually averaged over 2-3 years), rental income, and benefits. Self-employed income is usually averaged over 2-3 years of accounts or SA302 forms.
Lenders perform affordability assessments that consider all monthly commitments including credit cards, loans, car finance, and other debts. High debt-to-income ratios can significantly reduce your borrowing capacity or affect the interest rates offered.
Stress testing involves calculating whether you could still afford mortgage payments if interest rates increased. Lenders typically test affordability at rates 2-3% higher than the actual mortgage rate to ensure you can cope with potential rate rises.
Online calculators provide useful estimates based on standard lending criteria, but actual offers can vary significantly between lenders. Each lender has different criteria, and factors like credit history, employment type, and property location can all impact the final decision.