41 C.F.R. § 301-11.302 When should I request authorization for reimbursement under actual expense?
Title 41 - Public Contracts and Property Management
Request for authorization for reimbursement under actual expense should be made in advance of travel. However, subject to your agency's policy, after the fact approvals may be granted when supported by an explanation acceptable to your agency.
Title 41: Public Contracts and Property Management
PART 301–11—PER DIEM EXPENSES
Subpart D—Actual Expense
§ 301-11.302 When should I request authorization for reimbursement under actual expense?