20 CFR § 225.55 - Recomputation to use a new or different PIA formula.
---
identifier: "/us/cfr/t20/s225.55"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "20 CFR § 225.55 - Recomputation to use a new or different PIA formula."
title_number: 20
title_name: "Employees' Benefits"
section_number: "225.55"
section_name: "Recomputation to use a new or different PIA formula."
chapter_name: "RAILROAD RETIREMENT BOARD"
subchapter_number: "B"
subchapter_name: "REGULATIONS UNDER THE RAILROAD RETIREMENT ACT"
part_number: "225"
part_name: "PRIMARY INSURANCE AMOUNT DETERMINATIONS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "45 U.S.C. 231f(b)(5)."
regulatory_source: "54 FR 12903, Mar. 29, 1989, unless otherwise noted."
cfr_part: "225"
---
# 225.55 Recomputation to use a new or different PIA formula.
(a) *Description*—(1) *New computation formula.* If a new formula for computing or recomputing PIA's is enacted into law and the annuitant is eligible for the recomputation, the Board will recompute the PIA under the new formula.
(2) *Recomputation under different formula.* In some cases, a PIA may be recomputed under a computation formula different from the formula used in the computation (or earlier recomputation) of the PIA. The annuitant must be eligible for a computation or recomputation under the different formula.
(b) *Effective date of recomputation*—(1) *New computation formula.* A PIA recomputed under a newly enacted formula is effective with the month as directed in the legislation that establishes the new formula. The new PIA formula applies when it produces a PIA that is higher than the amount on which the existing annuity is based.
(2) *Different computation formula.* A PIA recomputed under a different formula is effective with the first month that the different formula produces a PIA that is higher than the PIA on which the existing annuity is based.