5 CFR § 1650.1 - Definitions.

---
identifier: "/us/cfr/t5/s1650.1"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "5 CFR § 1650.1 - Definitions."
title_number: 5
title_name: "Administrative Personnel"
section_number: "1650.1"
section_name: "Definitions."
chapter_name: "FEDERAL RETIREMENT THRIFT INVESTMENT BOARD"
part_number: "1650"
part_name: "METHODS OF WITHDRAWING FUNDS FROM THE THRIFT SAVINGS PLAN"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "5 U.S.C. 8351, 8432d, 8433, 8434, 8435, 8474(b)(5) and 8474(c)(1)."
regulatory_source: "68 FR 35503, June 13, 2003, unless otherwise noted."
cfr_part: "1650"
---


# 1650.1 Definitions.

(a) Definitions generally applicable to the Thrift Savings Plan are set forth at 5 CFR 1690.1.

(b) As used in this part:

*In-service withdrawal* means an age-based or financial hardship withdrawal from the TSP that may be available to a participant who has not yet separated from Government service.

*Post-employment distribution* means a distribution from the TSP that is available to a participant who is separated from Government service.

*Required beginning date* means the required beginning date as defined in Internal Revenue Code section 401(a)(9) and the regulations and guidance promulgated thereunder.

*Required minimum distribution* means the amount required to be distributed to a participant beginning on the required beginning date and every year thereafter pursuant to Internal Revenue Code section 401(a)(9) and the regulations promulgated thereunder, as applicable.

*Roth in-plan conversion* means a taxable rollover to a designated Roth account as stated in 26 U.S.C. 402A(c)(4).

*TSP withdrawal* means a post-employment distribution and/or an in-service withdrawal.

[68 FR 35503, June 13, 2003, as amended at 70 FR 32215, June 1, 2005; 84 FR 46420, Sept. 4, 2019; 85 FR 40570, July 7, 2020; 87 FR 31681, May 24, 2022; 91 FR 1672, Jan. 15, 2026]