20 Dollars

The P#64 series marked Australia's full transition to the redesigned Next Generation Banknote program, with the 20 Dollar note entering circulation in October 2019. The upgrade was partly driven by a counterfeiting vulnerability identified in the earlier polymer series — the new notes incorporate a rolling colour window element and a significantly more complex microprint field than their predecessors.

Lowe and Parkinson's co-signatures reflect the pairing of the RBA Governor with the Secretary to the Treasury, the standard dual-signatory arrangement Australia has maintained since the 1960s.