5 CFR § 1655.4
Number of loans
November 4, 2020
A participant may have no more than two loans outstanding from his or her TSP account at any time. One of the two outstanding loans may be a residential loan and the other one may be a general purpose loan. A participant with both a civilian TSP account and a uniformed services TSP account may have two outstanding loans from each account.
[68 FR 35515, June 13, 2003, as amended at 69 FR 29852, May 26, 2004]