Teams played matches within a series of regionalised divisions, with the winners of the top divisions progressing to semi-finals and a final. Matches were played using a Twenty20 format.
The divisions worked on a points system with positions within the divisions being based on the total points. Points were awarded as follows:[2]
The 2013 Women's Twenty20 Cup was divided into three regions: Midlands & North, South and South & West. Each region was further divided into divisions: Midlands & North with four, South with three and South & West with two. Teams in each division played each other once, and then the top two played in a Division Final and bottom two in a 3rd-place play-off. The winners of each Division 1, and the best-performing second-place team, progressed to the semi-finals.