IMPORTANT NOTE: Only PRE-JUDGMENT INTEREST CALCULATIONS can be made using this calculator.
Those needing to carry out post-judgment calculations may wish to use the commercial interest calculator available at

The information you enter on this page is not collected or processed by ACAT staff.

If you make a mistake simply press '← Back' or press the page refresh button on your toolbar to start again.
All dates must be entered using four digits for the year (dd/mm/yyyy).

As at 1 January 2020 the current pre-judgment interest rate is 5.25%

Enter your name or your business name as it will appear in the claim:

Enter the initial amount claimed: $

Enter the date interest began to accumulate (dd/mm/yyyy):

Have there been any repayments made?

Enter the amount and date of each repayment:
Amount: $ - Date (dd/mm/yyyy):

Enter the date on which interest stopped accumulating (dd/mm/yyyy):

This page was last updated on 7 May 2020.
If you have any questions concerning the Interest Calculator please email the ACAT.