The original 2020 calendar proposal was released on 29 October 2019, with six confirmed rounds, plus one non-championship round at the "Bathurst International", all held in
Australia. Qualifying was held during the opening round at Melbourne, but the event was abandoned on March 13, 2020, as the headlining
Australian Grand Prix had been cancelled by
Formula 1 because of
McLaren's withdrawal after a team member was tested positive for
COVID-19. With multiple disruptions delaying the season start due to the
COVID-19 pandemic, heavy border restrictions in Australia further complicating the holding of the championship, and various calendar revisions that did not went ahead as scheduled, the season started in January 2021, with a four-round calendar where one venue was still to be announced. It included a round at Symmons Plains, which was not featured in the calendar until the May 2020 revision. Rounds at Winton and The Bend were not rescheduled, while the rounds at Melbourne and Bathurst were set apart from the calendar due to their later dates as support events for the Australian Grand Prix and the inaugural Bathurst International, being later featured as part of the end-of-year
S5000 Tasman Series. The round at Phillip Island was later postponed and rescheduled. On 16 February 2021 it was announced the third round would be held at Sandown. As had been planned for 2020, the winner of each feature race received a trophy named in honour of former Australian racing drivers. The following racetracks were included at some point on the 2020 calendar, but were not rescheduled for the 2021 Australian Drivers' Championship. == S5000 Tasman Series ==