[Code of Federal Regulations] [Title 41, Volume 4] [Revised as of July 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 41CFR301-71.306] [Page 76] TITLE 41--PUBLIC CONTRACTS AND PROPERTY MANAGEMENT CHAPTER 301--TEMPORARY DUTY (TDY) TRAVEL ALLOWANCES PART 301-71--AGENCY TRAVEL ACCOUNTABILITY REQUIREMENTS--Table of Contents Subpart D--Accounting for Travel Advances Sec. 301-71.306 How do we collect the amount of a travel advance in excess of the amount of travel expenses substantiated by the employee? When the outstanding advance exceeds what you owe the employee, then the employee must submit cash or a check for the difference in accordance with your policy. Your failure to collect the amount in excess of substantiated expenses will cause a violation of the accountable plan rules contained in the Internal Revenue Code (title 26 of the United States Code).