5 CFR § 1653.35
Calculating entitlement
November 4, 2020
A tax levy or criminal restitution order can only require the payment of a stated dollar amount from the TSP. The payee's entitlement will be the lesser of:
(a) The dollar amount stated in the tax levy or enforcement letter; or
(b) The vested account balance on the date of disbursement, minus any outstanding loan balance.
[79 FR 53604, Sept. 10, 2014, as amended at 80 FR 52606, Sept. 1, 2015]