Business travel deductions are available when employees must travel away from their tax home or main place of work for business reasons. You must be "away from home" to deduct travel expenses.Travel expenses are costs incurred while traveling specifically for the purpose of conducting business-related activities. The entire trip consists of travel and business purposes. Renting a car for business travel is another deductible expense. This form is not required to complete your expense report but your agency may request it. Submit all expenses in a timely manner, preferably within 10 days of the last expense. Of travel card charges. ➢ procedures for the review and approval of employee expense reports in a complete and timely manner. Expense reports must include receipts for travel expenses and a complete explanation of the business purpose of the trip to support the use of University funds.