Rental cover / stress-test calculator
Lenders typically check that rent covers mortgage interest by a margin, calculated at a "stress" rate that can be higher than your actual pay rate. This tool runs that maths with numbers you choose — it doesn't know, and doesn't guess, what any real lender currently requires.
- Runs in your browser
- Your numbers, not ours
Formula: minimum monthly rent = loan × (stress rate ÷ 12) × (required cover ÷ 100). This is the general shape of a common industry approach, not any specific lender's actual criteria — real assessments also weigh your income, credit history, product type and more.
This tool cannot tell you if you'll be approved
It only checks one part of one common method lenders use — with figures you supply. Real lending decisions depend on the specific lender's current criteria, your income and credit history, the property, and factors this simple calculator doesn't model. Treat a "pass" here as a reason to go and ask a real broker, not as an outcome.