Syed Mushtaq Ali Trophy

The tournament is played under Twenty20 (T20) rules. Originally known as the Inter-State T20 Championship, it was inaugurated by the Board of Control for Cricket in India (BCCI) for the 2006–07 season. Except in 2016–17, the tournament has been contested by teams involved in the Ranji Trophy, 27 at first and currently (2023) 38. The format has generally been to begin with a round-robin stage with the teams divided into zonal groups, the top teams in each group qualifying for a knockout stage culminating in the final tie. In 2012–13, the BCCI decided to replace the knockout with a Super League consisting of two groups, the winners of which qualified for the final. In June 2016, the BCCI relaunched the competition using zonal teams, as in the Duleep Trophy, but they reverted to the Ranji teams in 2017. Since then, the competing teams have increased to 38 and the knockout stage restored.