Calculate Court Interest for any Australian Jurisdiction

Court Interest Calculator

This complimentary calculator calculates interest using the current interest rate in each jurisdiction. You will need Calin - Lawyer's Interest Calculator in these other situations:

  • Period involves past interest rates.
  • You need particulars of calculation for court pleadings.
  • You need to print details of the calculation.
  • Other interest rates - eg bank rates.
  • Take leap years into account.
  • Compound & periodic interest.
  • Data input validation.

Caution - check interest rates carefully and please advise us if the page and rates are out of date!

  Day Month   Year Include?  
First Day    
Last Day    
Interest Rate        
Rate Started        

Calin's list of supported Australian interest rates and their oldest and newest rate changes.

No.NameStartedLast Change
1Qld Magistrates Court Pre-Judgment 25-Feb-1993 01-Jan-2014
2WA Sup Ct Pre-Judgment 28-Jun-1991 11-Sep-1997
3Qld Supreme Court Pre-Judgment 25-Feb-1993 01-Jan-2014
4Qld District Court Pre-Judgment 25-Feb-1993 01-Jan-2014
5NSW Sup Ct Post-Judgment 01-Jul-1972 01-Jan-2014
6ATO General Interest Charge 01-Jul-1992 01-Jan-2014
7ATO Late Payment 01-Jul-1992 01-Jul-1999
8Family Law Act Post Judgment 08-May-1987 01-Jul-2013
9Federal Court Post-Judgment 01-Aug-1979 01-Jan-2014
10SA Mag Ct Post-Judgment 01-Jan-2000 01-Jan-2000
11WA Mag Court Pre-Judgment 28-Jun-1991 11-Sep-1997
12WA D Ct Pre-Judgment 28-Jun-1991 11-Sep-1997
13NSW D Ct Pre-Judgment 01-Jul-1972 01-Jan-2014
14NSW Loc Ct Pre-Judgment 01-Jul-1972 01-Jan-2014
15NSW Sup Ct Pre-Judgment 01-Jul-1972 01-Jan-2014
16NSW D Ct Post-Judgment 01-Jul-1972 01-Jan-2014
17NSW Loc Ct Post-Judgment 01-Jul-1972 01-Jan-2014
18Vic Mag Ct Pre-Judgment 01-Jul-1983 07-Oct-2013
19Vic Mag Ct Post-Judgment 01-Jul-1983 07-Oct-2013
20Vic Cty Ct Pre-Judgment 01-Jul-1983 07-Oct-2013
21Vic Cty Court Post-Judgment 01-Jul-1983 07-Oct-2013
22Vic Sup Ct Pre-Judgment (PIRA) 01-Jul-1983 07-Oct-2013
23Vic Sup Ct Post-Judgment 01-Jul-1983 07-Oct-2013
24SA District Ct Post-Judgment 04-Sep-2006 01-Jan-2014
25SA Mag Ct Pre-Judgment 01-Jan-2000 01-Jan-2000
26SA Sup Ct Post-Judgment 01-Jan-1987 01-Jan-2014
27SA Sup Ct Pre-Judgment 01-Jul-2010 01-Jan-2014
28ACT Mag Ct Post-Judgment 01-May-1986 01-Jan-2014
29ACT Sup Ct Pre-Judgment 01-Jan-1974 01-Jan-2014
30ACT Sup Ct Post-Judgment 01-Oct-1977 01-Jan-2014
31Tas Sup Ct Pre-Judgment 01-Jul-2010 01-Jan-2014
32Tas Sup Ct Post-Judgment 01-May-2000 01-Jan-2014
33NT Local Ct Post-J 01-Sep-1987 01-Jan-2014
34NT Supreme Ct Post-J 01-Sep-1987 01-Jan-2014
35Federal Court Pre-Judgment 01-Jan-1991 01-Jan-2014
36Fed Mag Ct Post-Judgment 01-Aug-1979 01-Jan-2014
37WA D Ct Post-Judgment 28-Jun-1991 11-Sep-1997
38WA Mag Ct Post-Judgment 28-Jun-1991 11-Sep-1997
39WA Sup Ct Post-Judgment 28-Jun-1991 11-Sep-1997
40Qld Magistrates Court Post-Judgment 17-Dec-1983 01-Jan-2014
41Qld Supreme Court Post-Judgment 17-Dec-1983 01-Jan-2014
42Qld District Court Post-Judgment 17-Dec-1983 01-Jan-2014
43ACT Mag Ct Pre-J Commenced Before 15-7-1992 01-Jul-1981 10-Jan-2005
44ACT Mag Ct Pre-J Commenced 15/7/92 to 10/1/2005 01-Jul-1981 10-Jan-2005
45ACT Mag Ct Pre-J Commenced after 9/1/2005 01-Jul-1981 01-Jan-2014
46RBA Cash Rate Target 02-Aug-1990 07-Aug-2013
47Vic Legal Profession Act 2004 08-Nov-2007 07-Aug-2013
48NSW Legal Profession Act 01-Oct-2005 07-Aug-2013
49ATO Shortfall Interest Charge 01-Apr-2005 01-Jan-2014
50ATO Base Rate of Interest 01-Jan-1971 01-Jan-2014
51RBA Bank Accepted Bills (90 days) 01-Jan-1970 01-Jan-2014
52ATO Div7A Benchmark Interest Rates 01-Jul-1998 01-Jul-2013
53NSW Pre-Judgment (Using Sched 5 to 30/6/10 then CRT) 01-Jul-1972 01-Jan-2014
54ATO Interest on Early and Over Payments 01-Jan-1971 01-Jan-2014
55Qld Interest on Money Orders 01-Jul-1998 01-Jan-2014

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