IAW DoD Mandate, all travelers (Military and Civilian) are required to have a GTC.
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The Government Travel Charge Card (GTCC) is mandated to be used by DoD personnel to pay for authorized expenses (including meals), when on official travel unless an exemption is granted. This includes temporary duty (TDY) and per component guidance, Permanent Change of Station (PCS) travel.
It is DoD policy that cardholders use their DoD travel card for all their meals that are in support of their official travel. It is actually a policy violation to use other personal forms of payment for meals while on TDY.
The GTCC includes Individually Billed Accounts (IBAs) and Centrally Billed Accounts (CBAs). The Department of Commerce (DOC) policy is that government issue travel card be used to pay for ALL official travel expenses while on TDY/TAD if travel is five or more times in a year, unless exempt..
In the Defense Travel System, or DTS, users can search for airline, hotel, and rental car reservations, check per diem rates, and prepare personal travel documents or, with the proper permissions, documents for others.