UK Mortgage Affordability Calculator
Common lender rule: max borrowing ≈ 4.5× single or joint income (minus existing debts).
⚠ 2024-25 UK tax-year figures. Estimates only — consult HMRC or a tax adviser.
About this tool
UK Mortgage Affordability Calculator is a single-purpose utility on instant.tw, a free toolbox of calculators, converters, generators, and quick lookups. Everything works in your browser — nothing is uploaded, nothing is stored on a server unless explicitly noted.
Category: Tax & Government — UK. Browse more Tax & Government — UK tools.