Bonus award levels are adjusted as needed to ensure the services are retaining the correct quantity and critical skill mix to optimize their ability to accomplish the mission.
The SRB is used to retain servicemembers with predetermined levels of experience called zones. Those zones are:
For example if the Navy needed to maintain their current number of Avionics Technicians with less than six years they would target an SRB for Zone A.
A servicemembers actual reenlistment bonus is determined by factoring:
(Monthly Base Pay) X (Years of Additional Service) X (The SRB multiplier) = SRB Award.