On 26 March 2019, three championship proposals were circulated to Cork club delegates after an expensive review process of the entire Cork championship system. A core element running through all three proposals, put together by the Cork GAA games workgroup, was that there be a group stage of 12 teams, as well as straight relegation and promotion. On 2 April 2019, a majority of 136 club delegates voted for Option A which provided for one round of games played in April and two more in August – all with inter-county players available. The decision meant that, for the first time since 1887, the top tier of Cork football was split in two into the Cork Premier Senior Championship and the Cork Senior A Championship.
Beginnings
The inaugural championship was scheduled to begin in April 2020, however, it was postponed indefinitely due to the coronavirus pandemic in Ireland. When the championship resumed, time constraints led to a revision of the format, with the play-offs for the second best and third best third placed teams being abolished. The knockout stage was further reduced, with the two best-ranking teams from the group stage receiving byes to the semi-finals and the other four qualifying teams contesting two lone quarter-finals. The very first match eventually took place on 24 July 2020, with Bandon claiming a 1-12 to 0-06 victory over Clyda Rovers. Bandon's Mark O'Regan scored the very first championship point before later scoring the championship's very first goal.
Regular format
Group stage
The 12 teams are divided into three groups of four. Over the course of the group stage, which features one game in April and two games in August, each team plays once against the others in the group, resulting in each team being guaranteed at least three games. Two points are awarded for a win, one for a draw and zero for a loss. The teams are ranked in the group stage table by points gained, then scoring difference and then their head-to-head record. The top two teams in each group qualify for the knock-out stage.
Knockout stage
Play-off: The second best and third best third placed teams from the group stage play off for last quarter-final place. Quarter-finals: The play-off winner and the seven top-ranking teams from the group stage contest this round. The four winners from these four games advance to the semi-finals. Semi-finals: The four quarter-final winners contest this round. The two winners from these four games advance to the semi-finals. Final: The two semi-final winners contest the final. The winning team are declared champions.
Promotion and relegation
At the end of the championship, the winning team is automatically promoted to the Cork Premier Senior Championship for the following season. The three bottom-placed teams from the group stage take part in a series of play-offs, with the losing team being relegated to the Cork Premier Intermediate Championship.