Online mortgage calculators may provide inaccurate borrowing estimates for prospective homebuyers, according to mortgage brokers. These tools often struggle to assess individual circumstances, particularly complex income sources and financial commitments.
Richard Davidson, a mortgage adviser at onlinemortgageadvisor.co.uk, noted that while calculators work for straightforward cases using simple income multiples, they are less effective for non-standard situations. These include self-employed income, bonuses, overtime, or households with childcare costs and car finance.
Craig Fish, director at Lodestone Mortgages, highlighted that rules on allowable income vary significantly between lenders. Bonuses, commission, overtime, and self-employed income are treated differently across lenders, and outgoings, credit commitments, and dependants also influence lending decisions in ways generic calculators cannot capture.
The findings suggest that buyers relying solely on online tools might either underestimate their purchasing power or, less commonly, overestimate their borrowing capacity. Mortgage advisers recommend that prospective buyers consult with them for accurate assessments, as only lenders' own calculators, accessed through whole-of-market brokers, can provide definitive figures tailored to individual circumstances.