When the Mortgage Calculator Says You Can't Borrow Enough
Online calculators give a rough figure — but the real borrowing amount depends on how each lender assesses your income, commitments and the property.
By Matthew Pigrome CeMAP
Founder of Mortgage321 · Working in financial services since 1989

Client type
Applicant whose calculator result fell short
Mortgage objective
Maximising borrowing and affordability
Primary challenge
Calculator figures are indicative; different lenders' affordability models produce very different results.
Key lesson
A specialist review can identify lenders whose affordability model assesses your income more favourably.
The full write-up is being finalised
This case is part of the Mortgage321 casebook. The complete write-up will be published once it has been compliance-approved. If your circumstances sound similar, request a Complex Case Review or discuss your case with an adviser — there’s no obligation and no mark on your credit file.
This Mortgage321 Scenario Guide is educational and does not represent a completed client case or a guaranteed outcome. It does not constitute financial, tax, legal or immigration advice. Outcomes depend on your individual circumstances and lender criteria at the time. Always consult an FCA-regulated adviser. Where buy-to-let or commercial finance is discussed, your property may be repossessed if you do not keep up repayments on a mortgage secured on it. Mortgage321 is a trading style of Matthew Christopher Pigrome, an appointed representative of Ingard Financial Limited, authorised and regulated by the Financial Conduct Authority No. 450731.
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