[2] South East Stars won the tournament, beating Northern Diamonds in the final.
[4][5] As the 2020 season was shortened due to the COVID-19 pandemic, the new Twenty20 competition was postponed, with only the Rachael Heyhoe Flint Trophy taking place.
[1] Fixtures were played in two blocks, after the first half of the 2021 Rachael Heyhoe Flint Trophy and with a break in the middle for The Hundred.
A bonus point will be given where the winning team's run rate is 1.25 or greater times that of the opposition.
In case of a tie in the standings, the following tiebreakers will be applied in order: highest net run rate, team that scored the most points in matches involving the tied parties, better bowling strike rate, drawing of lots.