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 requesting reimbursement of an expense should be filed within sixty (60) days of the date the expense is paid. The University reserves the right not to reimburse expenses on travel forms submitted 60 days or more after the date the expense is paid. Reimbursements made where the travel forms are filed subsequent to 60 days after the date the expense is paid will be treated as income subject to withholding according to federal income tax regulations section 1.62-2.