§ 301-8.6 - Mixed travel (per diem and actual subsistence expense) reimbursement.

(a) Generally, when actual expense reimbursement is authorized or approved for a particular temporary duty location, and is the only reimbursement system involved, the partial day of travel to and from that location also will be on an actual expense basis. However, if the en route travel to or from the actual expense location entails more than 1 day, the agency may authorize actual expense reimbursement, or per diem in accordance with part 301-7, whichever is administratively advantageous and commensurate with the expenses expected to be incurred by the traveler.

(b) If actual expense reimbursement authorized for particular locations is intermingled with per diem at other locations in a single trip, the agency shall determine when the transition between reimbursement systems occurs. Only one method or system is authorized for any given calendar day except as provided in § 301-8.2(b) or § 301-8.3(b)(2).