Interest-Only Mortgage Calculator in Australia

Use this Interest-Only Mortgage Calculator to estimate your repayments and total costs during the interest-only period of your home loan. It’s a simple way for Australian borrowers to understand how interest rates, fees, and repayment frequency affect their loan strategy.

Interest-Only Mortgage Calculator



Enter your loan details and click Calculate to see results here.

  • This is a model, not a prediction. Amounts and repayment periods are estimates only, actual amounts may be higher or lower.
  • Results are based on information you have provided and do not take your personal circumstances into account.
  • This calculator applies to loans which have an interest-only period, then for the remaining period of the loan, both principal (amount borrowed) and interest are repaid.
  • Initial inputs will be displayed on the left hand side of the calculator.
  • The graph displays the periodic repayments for an interest-only loan and the repayments for a comparable principal and interest loan with the same amount borrowed, interest rate, repayment frequency and fees as the interest-only loan.
  • This calculator is not intended to be your sole source of information when making a financial decision. You may wish to consider getting advice from a licensed finance professional.
  • Using this calculator does not guarantee you will be eligible for a loan. You will need to satisfy your lender’s lending criteria.
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  • Interest rates do not change for the life of the loan.
  • Interest is calculated by compounding on the same frequency as the repayment selected, i.e. weekly, fortnightly, monthly quarterly or annually.
  • It does not take into account up-front fees, such as loan establishment fees.
  • It does not consider your ability to make the repayments shown. To help you consider the impact of interest rates changes, we suggest exploring the impact of a 2% interest rate rise. Interest rates could rise in future by more than 2%.
  • Affordable repayments cannot be less than the fees entered.
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Learn more about Interest-only loan in Australia

Get quick insights into your home loan strategy with our easy-to-use Interest-Only Mortgage Calculator. Whether you’re comparing repayment frequencies or planning around an interest-only period, this tool helps you estimate repayments based on your loan amount, term, interest rate, and fees. It’s designed to support smarter budgeting and give you clarity on your loan commitments. Once you’ve crunched the numbers, connect with our team to explore competitive mortgage solutions that fit your financial goals.

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