USA Travel and Entertainment Regulations The last revision of the USA Travel and entertainment Regulations was made in September 2011. Changes in the regulation subsequent to the issuance of the regulations (and therefore not included in the regulations) are listed in the " Updates" section of the USA Travel and Entertainment Regulations. Click here for the complete USA Travel and Entertainment Regulations in PDF format. Timely Filing Travel forms should be filed within sixty (60) days of the trip. The University reserves the right not to reimburse expenses on travel forms submitted 60 days or more after a trip is made. Reimbursements made where the travel forms are filed subsequent to 60 days after completion of the trip will be treated as income subject to witholding according to federal income tax regulations section 1.62-2.