BRS
BRS is the military retirement system effective for service members entering after January 1, 2018. It combines a reduced defined-benefit pension (2.0% of base pay per year of service, vs. 2.5% under the Legacy High-Three system) with TSP matching contributions of up to 5% of base pay.
Under the Legacy High-Three system, military retirement was an all-or-nothing benefit — service members who didn't reach 20 years of service got no pension, while those who did got a pension of 2.5% × years × high-three average base pay. BRS reduced the pension multiplier to 2.0% but added TSP matching contributions that vest after 2 years of service. Most service members separate before the 20-year cliff; under Legacy, that majority left with no retirement benefit at all. Under BRS, they leave with a vested TSP balance.
BRS also includes Continuation Pay — a one-time mid-career bonus, payable between 8 and 12 years of service, in exchange for a 4-year additional service commitment. The Continuation Pay multiplier varies by service (between 2.5x and 13x of monthly base pay) and acts as a retention lever during the period when service members are most likely to separate.
For planning purposes, the BRS-vs-Legacy distinction matters for service members who entered between 2006 and 2018 and had a one-time election decision. Service members entering before 2006 were on Legacy with no choice; service members entering after 2018 are on BRS with no choice. The election cohort is now mostly past their decision window, but financial planners working with mid-career officers should know which system the client is on — the optimal contribution and exit strategies differ meaningfully.