Opt-in eligible Service members who elect to remain in the legacy High-3 retirement system are?

Opt-in eligible Service members who choose to remain in the legacy High-3 retirement system will continue to receive retirement benefits based on the average of their highest three years of basic pay. This decision allows them to maintain the established retirement calculations and potentially secure a higher payout compared to the new Blended Retirement System (BRS). However, they forgo some of the benefits associated with BRS, such as the service member's contribution to the Thrift Savings Plan and the government matching contributions. Ultimately, the choice should align with their long-term financial goals and service plans.