5 C.F.R. § 1655.2
A participant can apply for a TSP general purpose or residential loan if:
(e) The participant has not had a TSP loan declared a taxable distribution within the last 12 months for any reason other than a separation from Government service.
Paragraph (b) of this section shall not apply to loan requests made during a Government shutdown by participants who are furloughed or excepted from furlough due to the Government shutdown.
[84 FR 1601, Feb. 5, 2019]