The Mid Tipp club won through to the decider with a 0-17 to 2-9 semi-final win over Newport Gaels in Newport.
Commercials booked their place in the final by beating Galtee/Golden 1-9 to 0-5 in Clonmel.
Meanwhile, Borrisoleigh have claimed the the North Tipperary U21B hurling title.
They defeated Lorrha-Dorrha 3-10 to 1-7 in the final, which was played in Moneygall.
Tipperary have scored a second successive victory in the Leinster U21 Football League.
The Premier County beat Laois 1-7 to 0-8 at Dr Morris Park in Thurles.
Tipp defeated Down in their first match in the competition.
