Cost-of-living adjustments.

(a) The phased retirement annuity under § 831.1741 is increased by cost-of-living adjustments in accordance with 5 U.S.C. 8340. (b) A composite retirement annuity under § 831.1742 is increased by cost-of-living adjustments in accordance with 5 U.S.C. 8340, except that 5 U.S.C. 8340(c)(1) does not apply. (c)(1) For the purpose of computing the amount of phased retirement annuity used in the computation under § 831.1742(a)(1), the initial cost-of-living adjustment applied is prorated in accordance with 5 U.S.C. 8340(c)(1). (2) If the individual enters full retirement status on the same day as the effective date of a cost-of-living adjustment (usually December 1st), that cost-of-living adjustment is applied to increase the phased retirement annuity used in the computation under § 831.1742(a)(1). (d)(1) For the purpose of computing the actuarial reduction used in the computation under § 831.1742(d)(1), the initial cost-of-living adjustment applied is prorated in accordance with 5 U.S.C. 8340(c)(1). (2) If the individual enters full retirement status on the same day as the effective date of a cost-of-living adjustment (usually December 1st), that cost-of-living adjustment is applied to increase the actuarial reduction used in the computation under § 831.1742(d)(1). (3) When applying each cost-of-living adjustment to the actuarial reduction used in the computation under § 831.1742(d)(1), the actuarial reduction is rounded up to the next highest dollar.