Calculator methodology

Cash vs Car Finance vs Offset Calculator: Methodology

The calculator shows cash remaining after a cash purchase or finance deposit, estimates standalone car-finance cost, and shows a simple mortgage-offset opportunity-cost sensitivity.

Calculation approach

  • Car finance uses standard amortisation over the entered term.
  • Offset opportunity cost uses the entered mortgage rate and horizon as a transparent sensitivity.
  • It does not model tax, depreciation or vehicle resale value.

What the calculator deliberately does not decide

The calculator does not select a lender, predict approval, expose lender policy or provide personal financial or tax advice. It is a transparent comparison tool so you can test structure before seeking a quote.

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Use the enquiry form for an initial broker review. No lender application is made just by enquiring.

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Sources and verification

General information only. It is not personal financial, tax or legal advice. Finance approval, pricing and structure are subject to lender assessment and your circumstances.

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