Travel expenses are “ordinary and necessary” expenses while away from home for the primary purpose of business. Keep all receipts and relevant documentation to substantiate where you went, why, for how long, and amount spent. If you combined business and personal travel, show how much is related to business.
Lodging receipts: These should show the travel location, duration of your stay, costs and expenses. Keep records for cleaning and laundry, telephone charges, tips, and other charges not shown separately.
Transportation receipts: These include airplane, train or bus ticket stubs, travel agency receipts, rental car or taxi receipts, etc., showing the amounts, dates and destinations.
Meal receipts: Generally, you must keep a log of your meal expenses and save receipts for amounts of $75 or more. Either track the actual costs of your meals, or use the standard meal allowance, if you qualify. You may only claim a deduction for 50 percent of the un-reimbursed cost of your meals.