13 CFR 134.613 - What documentation do I need for fees and expenses?
You must submit a separate itemized statement or invoice for the services of each provider for which you seek reimbursement. Each separate statement or invoice must contain:
(a) The hours worked in connection with the proceeding by each provider supplying a billable service;
(b) A description of the specific services performed by each provider;
(c) The rate at which fees were computed for each provider;
(d) The total charged by the provider on that statement or invoice; and
(e) The provider's verification that the statement or invoice is true to the best of his or her knowledge and that he or she understands that a false statement is punishable by fine and imprisonment under 18 U.S.C. 1001.