5 C.F.R. § 838.306 Specifying type of annuity for application of formula, percentage or fraction.
Title 5 - Administrative Personnel
(a) A court order directed at employee annuity that states the former spouse's share of employee annuity as a formula, percentage, or fraction is not a court order acceptable for processing unless OPM can determine the type of annuity on which to apply the formula, percentage, or fraction. (b) The standard types of annuity to which OPM can apply the formula, percentage, or fraction are net annuity, gross annuity, or self-only annuity, which are defined in §838.103. Unless the court order otherwise directs, OPM will apply the formula, percentage, or fraction to gross annuity. Section 838.625 contains information on other methods of describing these types of annuity.
Title 5: Administrative Personnel
PART 838—COURT ORDERS AFFECTING RETIREMENT BENEFITS
Subpart C—Requirements for Court Orders Affecting Employee Annuities
§ 838.306 Specifying type of annuity for application of formula, percentage or fraction.