Starting Jan. 1, 2018, cost changes for TRICARE benefits transition from a fiscal year period to a calendar year period. “Changing from a fiscal year (Oct. 1 – Sept. 30) to a calendar year (Jan. 1 – Dec. 31) makes the TRICARE benefit consistent with civilian health plans,” said Capt Nicholas Edvarchuk 86th Medical Group Tricare Operation and Patient Administration Flight Commander. The change will largely affect those plans which have an enrollment fee and are currently billed by the fiscal year. This includes retirees and their family members in TRICARE Prime, TRICARE Retired Reserve, TRICARE Reserve Select and those in TRICARE Young Adult plans. This change is one of several changes that TRICARE is adopting in 2018.