UK Mortgage Affordability Checker

According to UK Bank of England published Bank Rate data and HMRC SDLT guidance, this calculator delivers UK-specific mortgage and property-purchase math. All calculation runs entirely in your browser; no data is transmitted to PlainMortgage.

Enter values and click Calculate.

How this calculator works

Estimate borrowing capacity under BoE Affordability Test framework. Calculations follow primary UK government and Bank of England sources — see our methodology for full source attribution.