41 C.F.R. § 301-51.1 What is the required method of payment for official travel expenses?
Title 41 - Public Contracts and Property Management
You are required to use the Government contractor-issued travel charge card for all official travel expenses unless you have an exemption.
Title 41: Public Contracts and Property Management
PART 301–51—PAYING TRAVEL EXPENSES
Subpart A—General
§ 301-51.1 What is the required method of payment for official travel expenses?