---
kind: "section"
citation: "5 C.F.R. § 1650.1"
title: "5"
number: "1650.1"
heading: "Definitions."
url: "https://uscodex.org/cfr/5/1650.1"
---

# §1650.1. Definitions.

- (a) Definitions generally applicable to the Thrift Savings Plan are set forth at [5 CFR 1690.1](/cfr/5/1690.1.md).
- (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)](/cfr/5/401.md?p=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)](/cfr/5/401.md?p=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)](/usc/26/402A.md?p=c-4).

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


## Notes

### Amendments

[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]

### Authority

Authority: 5 U.S.C. 8351, 8432d, 8433, 8434, 8435, 8474(b)(5) and 8474(c)(1).

### Source

Source: 68 FR 35503, June 13, 2003, unless otherwise noted.

### Amendments

[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]