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Car Loan Calculator

Calculate UK car finance and loan repayments, total interest, and borrowing cost. Compare deposits, APRs, and terms before you apply.

Last reviewed 3 August 2026

Your details

Calculator inputs

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When to use this calculator

  • Before comparing personal loan or credit offers on the same amount and term.
  • When you want to see total interest, not only the monthly payment.
  • When you are choosing between a shorter term and a lower monthly debit.
  • When you need a planning estimate before making a credit application.

A realistic Canada planning example

Use these sample inputs as a quick scenario test, then change one variable at a time to compare outcomes.

A realistic Canada planning example
InputValue
Car Price (CA$)CA$0.30
Deposit (CA$)CA$100,000
Interest Rate (%)5%
Term (Years)5 years

After entering these figures, review monthly, total cost and interest together rather than in isolation. Then rerun the tool with one input adjusted.

How to read your results

Monthly

The figure produced by this output for the inputs you entered. Change one variable at a time if you want to see what drives it.

Total Cost

The headline outcome of this calculation. It is most useful when read alongside the supporting metrics rather than in isolation.

Interest

The figure produced by this output for the inputs you entered. Change one variable at a time if you want to see what drives it.

Method & assumptionsAuthoritative sources

This calculator works out your monthly repayment, total interest paid, and overall cost of borrowing based on the loan amount, interest rate (APR), and repayment term you enter. It uses the standard amortisation formula, so each monthly payment covers accruing interest first with the remainder reducing the outstanding principal. The APR field should reflect the annual percentage rate quoted in your finance agreement — not the flat rate, which can look artificially low. The calculator does not account for arrangement fees added to the loan or payment protection insurance (PPI) premiums, so add those separately if relevant. Results are illustrative; always verify figures with your lender before signing any agreement.

Common mistakes

  • !Using an assumption that is not supported by a current local quote, bill, statement or official source.
  • !Treating a generic estimate as a lender, provider, payroll or tax authority decision.
  • !Mixing monthly and annual inputs without converting them consistently.
  • !Testing only one scenario instead of checking how a cautious assumption changes the result.

What to do next

  • Run a second scenario with a cautious assumption so you can see the downside clearly.
  • Compare the result with the related calculators below before making a decision.
  • Check current local rules, eligibility and provider terms before applying or committing money.
  • Keep a record of the assumptions so you can update the estimate when a quote, bill or pay figure changes.

Frequently asked

Compare representative APR rather than a flat rate, using the same deposit and term for each offer. Also compare the total amount payable and any fees or optional final payment, because the lowest monthly figure is not always the cheapest agreement.

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