CFR›Title 20›Chapter II›Part 225›Subpart A ContainsSections 225.1–225.4CorpusDaily eCFRDisplayed edition2026-05-07Last updated2026-05-07 Subpart A—General Sections 225.1 § 225.1 Introduction. 225.2 § 225.2 Definitions. 225.3 § 225.3 PIA computation formulas. 225.4 § 225.4 Limitation on amount of earnings used to compute a PIA. Next B Subpart B—PIA's Used in Computing Employee, Spouse and Divorced Spouse Annuities