Vehicle registration plates of the Australian Capital Territory

YAA was set aside for recalls of numericals, but public pressure led to a backflip and the authorities allowed motorists to retain their existing numbers as long as they converted them into blue on reflective white, for a fee.

By November 1979, It changed with the new slogan added to "ACT- Canberra The National Capital" starting at YMA-000 as the previous block stopped at YJZ-999.

In 1983, following the change of Federal Government, blocks of YKA to YKK's in the previous style were allocated to the public as it was found in storage.

In early 1996, as YZZ-999 was reached, it went back to YKL to continue filling the unused allocation in the ACT- Canberra The National Capital slogan, and filled unused YAQ, YBQ, YCQ, YDQ, YEQ, YFQ, YGQ, YHQ, YIQ, YJQ, before ending as YLZ-999.

In 1999, manufacturer changes lead to the adoption of NSW Premium embossed dies on ACT plates and continues today.

Since 2007 a special series bearing the slogan "ACT-Celebration of a Century 2013" is being issued in commemoration of Canberra's centenary year in 2013.

Canberra - The Nation's Capital series has also been updated as the alphanumerics has been embossed closer rather than the wider and the ink colour changed to a slightly darker blue tone.

[5] As of 8 December 2017, following the formal legal status of the Same Sex Marriage legislation, the ACT Government announced that a Rainbow themed number plate will be released soon, and instead of the traditional slogan, the rainbow colour will run at the bottom of the plates.