20 CFR § 229.1 - Introduction.

---
identifier: "/us/cfr/t20/s229.1"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "20 CFR § 229.1 - Introduction."
title_number: 20
title_name: "Employees' Benefits"
section_number: "229.1"
section_name: "Introduction."
chapter_name: "RAILROAD RETIREMENT BOARD"
subchapter_number: "B"
subchapter_name: "REGULATIONS UNDER THE RAILROAD RETIREMENT ACT"
part_number: "229"
part_name: "SOCIAL SECURITY OVERALL MINIMUM GUARANTEE"
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. 231(f)(b)(5)."
regulatory_source: "58 FR 53397, Oct. 15, 1993, unless otherwise noted."
cfr_part: "229"
---


# 229.1 Introduction.

This part explains when an annuity can be increased under the social security overall minimum guarantee, also sometimes referred to as the “special guaranty”, and how the increased amount is determined. Deductions and reductions in the overall minimum rate are explained.