The pension supplement basic amount is an annual rate paid fortnightly from 20 September 2009. It replaces the GST supplement. It is indexed twice a year in line with CPI increases.

The pension supplement is added to a person's maximum basic rate. The pension supplement is calculated as a 'combined couple' rate. The 'not a member of a couple' rate is 66.33% of the 'combined couple' rate. The member of a couple rate is 50% of the combined couple rate. From 1 July 2010, the minimum pension supplement amount will be able to be claimed on a quarterly basis rather than on a fortnightly basis.