Home Loan Repayment Calculator

Home loan calculator

Use this calculator to estimate mortgage repayment figures, how much you may afford to borrow, and how much time and money you could save by making extra home loan payments.

You might be surprised to discover how every little bit counts. On the average mortgage, paying just an extra $20 a week could save you more than $25,000 in interest costs over the life of your loan.

There’s no better motivation to pay down your mortgage faster than seeing the thousands of dollars you could save and years you could cut off your home loan by making a few simple changes to your budget.

Want to know more about budgeting and how to own your own home sooner? You’ll find loads of handy tips in our Money Tools section.

We can also provide a free consultation including a 12-month budget forecast to help you better manage your money.


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To use the Home Loan Repayment Calculator, enter the following information.

  • On the ‘My Loan Details’ tab, enter the following information:

    • Your mortgage balance or how much you’d like to borrow
    • Loan term (total number of years to repay the loan)
    • Indicative annual interest rate (used to calculate interest charges against your loan balance)
    • Repayment frequency (weekly, fortnightly or monthly)
    • Repayment type (‘principal and interest’ pays off the interest costs and balance of the loan over time; ‘interest only’ repays the interest component only—the balance does not go down)
  • On the ‘Extra Repayments’ tab explore how much you could save by:

    • Making extra regular repayments (weekly, fortnightly or monthly)
    • Keeping cash savings in an interest offset facility, or
    • Making a once-off lump sum payment against the loan