5 C.F.R. § 892.301 How do I pay my premium?
Title 5 - Administrative Personnel
As a participant in premium conversion, instead of having your premium withheld from after-tax salary, your salary will be reduced (through a Federal allotment) by the amount equal to your FEHB premium, which you will allot to your agency. The allotment from salary satisfies the FEHB premium payment requirement of 5 U.S.C. 8906. Your employer is authorized to accept this allotment under §550.311(a)(8) and §550.312 of this chapter or, for employers not subject to those regulations, a similar mechanism. Your agency will use the allotment to pay your share of your FEHB premium. This will reduce your taxable income as described in §892.102.
Title 5: Administrative Personnel
PART 892—FEDERAL FLEXIBLE BENEFITS PLAN: PRE-TAX PAYMENT OF HEALTH BENEFITS PREMIUMS
Subpart C—Contributions and Withholdings
§ 892.301 How do I pay my premium?

