 The following teams have changed division since the 2017 championship season.Promoted from 2017 Cavan Junior Football Championship
Relegated from 2017 Cavan Senior Football Championship

Promoted to 2018 Cavan Senior Football Championship
Relegated to 2018 Cavan Junior Football Championship

All 14 teams enter the competition at this stage.A random draw determines which teams face each other in each of the four rounds.