5 CFR § 846.402
Refunds of all CSRS contributions
November 4, 2020
(a) An individual who elects to transfer to FERS is entitled to a refund of all CSRS contributions in accordance with the provisions of part 831, subpart T of this chapter.
(b) An application for refund of FERS retirement contributions under §843.202 of this chapter is deemed to also be an application for refund of CSRS retirement contributions under part 831, subpart T of this chapter.