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Money guide

Loan Repayment Guide

Loan repayments depend on principal, interest rate, term, repayment frequency and fees.

Updated 16 October 2026 • Reviewed by Tools by Layna Editorial Team • General information only

The straight answer

Loan repayments depend on principal, interest rate, term, repayment frequency and fees.

What matters most

PriorityHow to apply it
Main driverA lower repayment can still cost more over a longer term.
Downside riskComparison rates help but do not capture every personal feature.
Verification pointStress-test rate rises and income interruptions.

How to use this guide

Compare principal, interest rate, term, repayment frequency, establishment costs, ongoing fees and any break or refinance costs. For this page, the comparison is only valid when the monetary basis and timing are consistent.

  • Start loan repayment guide by defining the cash-flow decision before entering figures.
  • Validate the base case against this page-specific point: A lower repayment can still cost more over a longer term.
  • Build a realistic downside scenario around this constraint: Comparison rates help but do not capture every personal feature.
  • Before acting, verify this final check against current statements, contracts or official guidance: Stress-test rate rises and income interruptions.

Worked example

For a hypothetical$10,000 principal-and-interest loan over 36 months at a constant nominal 6% annual rate, use a monthly rate of 0.06 ÷12 and end-of-month repayments. The standard amortisation formula gives $304.22 per month, approximately$10,951.90 in total and$951.90 interest before fees. Actual lenders’ timing and rounding can differ. A$300 establishment fee is additional to this no-fee illustration.

What can change the answer

  • For loan repayment guide, confirm whether every amount is gross or net and whether GST is included, excluded or not applicable.
  • Separate fixed costs, variable costs, one-off costs, interest and fees instead of hiding them inside one total.
  • Use actual payment dates and matching weekly, monthly or annual periods so timing does not distort the comparison.
  • Stress-test the result against the risk highlighted on this page: Comparison rates help but do not capture every personal feature.

Common mistakes

  • Using one loan repayment guide result as proof without checking whether the inputs were representative.
  • Ignoring the page’s main limitation: Comparison rates help but do not capture every personal feature.
  • Changing course before checking this review signal: Stress-test rate rises and income interruptions.
  • Choosing the most attractive headline figure while ignoring cash flow, fees, timing or the cost of being wrong.

Sources and method notes

Related calculators and guides

Frequently asked questions

Is the smallest repayment always the cheapest loan?

No. Extending the term can reduce each payment while increasing total interest. Compare total repayments and fees as well as the regular payment.

What does a comparison rate add to the interest rate?

It incorporates interest and most fees for the example loan assumptions. It helps comparison, but different amounts, terms or features can change the cost for your situation.

Can I assume a variable repayment will stay the same?

No. A rate change can alter repayments. Test a higher-rate scenario and check the lender's actual fees, repayment rules and affordability assessment.

Bottom line

Loan repayments depend on principal, interest rate, term, repayment frequency and fees. Use loan repayment guide to compare scenarios and expose the assumption doing the most work. Verify current rates, fees, GST treatment and contract terms before committing.