Tables are provided below for interest rates applicable prior to 1 July 2010 and interest rates after 1 July 2010.
Note: from 1 July 2010 interest was adjusted to separate amounts for pre-judgment interest and post-judgment interest. Refer to separate table for rates after 1 July 2010.
| Period | Interest rate (per cent per year) |
|---|---|
| 1 July 1972 to 31 Dec 1973 | 5 |
| 1 Jan 1974 to 31 Dec 1980 | 10 |
| 1 Jan 1981 to 30 June 1981 | 13.5 |
| 1 July 1981 to 30 June 1982 | 14.5 |
| 1 July 1982 to 31 Dec 1983 | 15.5 |
| 1 Jan 1984 to 31 Dec 1985 | 14.5 |
| 1 Jan 1986 to 30 June 1986 | 18.25 |
| 1 July 1986 to 31 Oct 1987 | 19.5 |
| 1 Nov 1987 to 29 Feb 1988 | 18 |
| 1 Mar 1988 to 28 Feb 1989 | 15 |
| 1 Mar 1989 to 31 Aug 1989 | 17 |
| 1 Sept 1989 to 31 Aug 1990 | 21 |
| 1 Sept 1990 to 28 Feb 1991 | 19 |
| 1 Mar 1991 to 31 Aug 1991 | 17 |
| 1 Sept 1991 to 28 Feb 1992 | 15 |
| 29 Feb 1992 to 31 Aug 1992 | 13 |
| 1 Sept 1992 to 31 Aug 1993 | 11.25 |
| 1 Sept 1993 to 28 Feb 1995 | 10.5 |
| 1 Mar 1995 to 28 Feb 1997 | 12 |
| 1 Mar 1997 to 31 Aug 1997 | 10.5 |
| 1 Sept 1997 to 31 Aug 1998 | 10 |
| 1 Sept 1998 to 29 Feb 2000 | 9.5 |
| 1 Mar 2000 to 31 Aug 2000 | 10 |
| 1 Sept 2000 to 31 Aug 2001 | 11 |
| 1 Sept 2001 to 28 Feb 2002 | 10 |
| 1 Mar 2002 to 31 Dec 2006 | 9 |
| 1 Jan 2007 to 5 Mar 2009 | 10 |
| 6 Mar 2009 to 30 June 2010 | 9 |
| Period | Pre-judgment interest rate | Post-judgment interest rate |
|---|---|---|
| 1/7/10 to 31/12/10 | 8.5 | 10.5 |
| 1/1/11 to 30/6/11 | 8.75 | 10.75 |
| 1/7/11 to 31/12/11 | 8.75 | 10.75 |
| 1/1/12 to 30/6/12 | 8.25 | 10.25 |
| 1/7/12 to 31/12/12 | 7.5 | 9.5 |
| 1/1/13 to 30/6/13 | 7 | 9 |
| 1/7/13 to 31/12/13 | 6.75 | 8.75 |
| 1/1/14 to 30/6/14 | 6.5 | 8.5 |
| 1/7/14 to 31/12/14 | 6.5 | 8.5 |
| 1/1/15 to 30/6/15 | 6.5 | 8.5 |
| 1/7/15 to 31/12/15 | 6 | 8 |
| 1/1/16 to 30/6/16 | 6 | 8 |
| 1/7/16 to 31/12/16 | 5.75 | 7.75 |
| 1/1/17 to 30/6/17 | 5.50 | 7.50 |
| 1/7/17 to 31/12/17 | 5.50 | 7.50 |
| 1/1/18 to 30/6/18 | 5.50 | 7.50 |
| 1/7/18 to 31/12/18 | 5.50 | 7.50 |
| 1/1/19 to 30/6/19 | 5.50 | 7.50 |
| 1/7/19 to 31/12/19 | 5.25 | 7.25 |
| 1/1/20 to 30/6/20 | 4.75 | 6.75 |
| 1/7/20 to 31/12/20 | 4.25 | 6.25 |
| 1/1/21 to 30/6/21 | 4.10 | 6.10 |
| 1/7/21 to 31/12/21 | 4.10 | 6.10 |
| 1/1/22 to 30/6/22 | 4.10 | 6.10 |
| 1/7/22 to 31/12/22 | 4.85 | 6.85 |
| 1/1/23 to 30/6/23 | 7.10 | 9.10 |
| 1/7/23 to 31/12/23 | 8.10 | 10.10 |
| 1/1/24 to 30/6/24 | 8.35 | 10.35 |
| 1/7/2024 to 31/12/2024 | 8.35 | 10.35 |