(11) BUSINESS EXPENSE-Claims for phone calls must include the place and party called. If you travel away from home overnight on business, you can deduct these travel expenses: Airline, train, or bus fares — This includes first-class.Traveler should disclose the entity providing funding on the Travel Request Form. Deducting travel expenses can be tricky as the tax laws surrounding them change yearly. Here's what to know in 2023. Concur Expense may be used to submit the following report types. In-State Employee Travel; Out-of-State Employee Travel; International Employee Travel. Requests for reimbursement of out-of-state travel expenses must be claimed separately. This form is used to track your expenses during travel. You fill in the top and left half of the form, and submit it at least 4 weeks prior to travel.