41 CFR § 301-52.24
Does mandatory use of the Government contractor-issued travel charge card change my obligation to pay my travel card bill by the due date?
June 9, 2020
No, mandatory use of the Government contractor-issued travel charge card does not relieve you of your obligation to pay your bill in accordance with your cardholder agreement.
[FTR Amdt. 90, 65 FR 3056, Jan. 19, 2000]