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Loan Calculator

Calculate repayments, total interest and the full cost of a personal loan, including fees.

  1. Enter your numbers
  2. Results update as you type
  3. Copy the answer or share the link
Runs in your browser. Your data and files never leave your device.

About the Loan Calculator

Find the regular repayment on any fixed-rate loan, how much interest you’ll pay over its life and the true total cost once fees are included. Weekly, fortnightly and monthly repayments are supported.

How does the Loan Calculator work?

Repayments are calculated so that the loan, plus interest charged on the outstanding balance each period, is fully repaid by the end of the term. Early repayments are mostly interest; later ones mostly principal.

Loan Calculator formula

PMT = P × r ÷ (1 − (1 + r)^−n)

P is the amount borrowed, r the interest rate per repayment period and n the number of repayments.

Example

$20,000 over 5 years at 9.5% costs about $420 a month, with around $5,200 in total interest.

Guides

Frequently asked questions

What is a comparison rate?

In some countries lenders must show a comparison rate that folds in standard fees. Adding the fees here shows the same effect on your total cost.

Is it cheaper to repay fortnightly?

Paying half the monthly amount every fortnight means 26 half-payments — 13 monthly payments a year — which shortens the loan. Choosing “fortnightly” here calculates the exact fortnightly repayment for the same term.

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