20 CFR § 225.31 - PIA's to which DRC's are added.

---
identifier: "/us/cfr/t20/s225.31"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "20 CFR § 225.31 - PIA's to which DRC's are added."
title_number: 20
title_name: "Employees' Benefits"
section_number: "225.31"
section_name: "PIA's to which DRC's are added."
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"
---


# 225.31 PIA's to which DRC's are added.

(a) DRC's can be added to the following PIA's when used in computing the following benefits:

(1) Tier I PIA used in computing a retirement employee annuity.

(2) Overall Minimum PIA used in computing a retirement employee annuity.

(3) Survivor Tier I PIA used in computing a widow(er), remarried widow(er) or surviving divorced spouse annuity based on age or disability.

(4) Employee RIB PIA used in computing a widow(er), remarried widow(er) or surviving divorced spouse annuity based on age or disability.

(5) RLS PIA used in computing the amount of the residual lump-sum payable (as explained in part 234 of this chapter).