We have developed a Pre-Judgment Interest Calculator to make these complex calculations simple.
https://dolmanbateman.com.au/online-tools/pre-judgment-interest-calculator/
Interest is now calculated on the following basis:
(a) in respect of the period from 1 January to 30 June in any year – the rate that is 4% above the cash rate last published by the Reserve Bank of Australia before that period commenced, and
(b) in respect of the period from 1 July to 31 December in any year – the rate that is 4% above the cash rate last published by the Reserve Bank of Australia before that period commenced.
| Date | RBA Cash Rate | Pre-Judgement Interest Rate |
| 1/01/1991 | 12.00% | 16.00% |
| 1/07/1991 | 10.50% | 14.50% |
| 1/01/1992 | 8.50% | 12.50% |
| 1/07/1992 | 6.50% | 10.50% |
| 1/01/1993 | 5.75% | 9.75% |
| 1/07/1993 | 5.25% | 9.25% |
| 1/01/1994 | 4.75% | 8.75% |
| 1/07/1994 | 4.75% | 8.75% |
| 1/01/1995 | 7.50% | 11.50% |
| 1/07/1995 | 7.50% | 11.50% |
| 1/01/1996 | 7.50% | 11.50% |
| 1/07/1996 | 7.50% | 11.50% |
| 1/01/1997 | 6.00% | 10.00% |
| 1/07/1997 | 5.50% | 9.50% |
| 1/01/1998 | 5.00% | 9.00% |
| 1/07/1998 | 5.00% | 9.00% |
| 1/01/1999 | 4.75% | 8.75% |
| 1/07/1999 | 4.75% | 8.75% |
| 1/01/2000 | 5.00% | 9.00% |
| 1/07/2000 | 6.00% | 10.00% |
| 1/01/2001 | 6.25% | 10.25% |
| 1/07/2001 | 5.00% | 9.00% |
| 1/01/2002 | 4.25% | 8.25% |
| 1/07/2002 | 4.75% | 8.75% |
| 1/01/2003 | 4.75% | 8.75% |
| 1/07/2003 | 4.75% | 8.75% |
| 1/01/2004 | 5.25% | 9.25% |
| 1/07/2004 | 5.25% | 9.25% |
| 1/01/2005 | 5.25% | 9.25% |
| 1/07/2005 | 5.50% | 9.50% |
| 1/01/2006 | 5.50% | 9.50% |
| 1/07/2006 | 5.75% | 9.75% |
| 1/01/2007 | 6.25% | 10.25% |
| 1/07/2007 | 6.25% | 10.25% |
| 1/01/2008 | 6.75% | 10.75% |
| 1/07/2008 | 7.25% | 11.25% |
| 1/01/2009 | 4.25% | 8.25% |
| 1/07/2009 | 3.00% | 7.00% |
| 1/01/2010 | 3.75% | 7.75% |
| 1/07/2010 | 4.50% | 8.50% |
| 1/01/2011 | 4.75% | 8.75% |
Updated: 28/1/2011