If you temporarily travel away from your tax home, you can use this chapter to determine if you have deductible travel expenses. This chapter defines "travel expenses," "tax home," "temporary assignment," and the "standard meal allowance." It also discusses the rules for travel inside and outside the United States, luxury water travel, and deductible convention expenses.

Travel expenses defined. For tax purposes, travel expenses are the ordinary and necessary expenses of traveling away from home for your business, profession, or job.

An ordinary expense is one that is common and accepted in your field of trade, business, or profession. A necessary expense is one that is helpful and appropriate for your business. An expense does not have to be indispensable to be considered necessary.

You will find examples of deductible travel expenses in Table 1, later.

Traveling away from home. You are traveling away from home if:

1. Your duties require you to be away from the general area of your tax home (defined later) substantially longer than an ordinary day's work, and
2. You need to sleep or rest to meet the demands of your work while away from home.

This rest requirement is not satisfied by merely napping in your car. You do not have to be away from your tax home for a whole day or from dusk to dawn as long as your relief from duty is long enough to get necessary sleep or rest.

Example 1. You are a railroad conductor. You leave your home terminal on a regularly scheduled round-trip run between two cities and return home 16 hours later. During the run, you have 6 hours off at your turnaround point where you eat two meals and rent a hotel room to get necessary sleep before starting the return trip. You are considered to be away from home.

Example 2. You are a truck driver. You leave your terminal and return to it later the same day. You get an hour off at your turnaround point to eat. Because you are not off to get necessary sleep and the brief time off is not an adequate rest period, you are not traveling away from home.

Members of the Armed Forces. If you are a member of the U.S. Armed Forces on a permanent duty assignment overseas, you are not traveling away from home. You cannot deduct your expenses for meals and lodging. You cannot deduct these expenses even if you have to maintain a home in the United States for your family members who are not allowed to accompany you overseas. If you are transferred from one permanent duty station to another, you may have deductible moving expenses, which are explained in Publication 521, Moving Expenses.

A naval officer assigned to permanent duty aboard a ship that has regular eating and living facilities has a tax home aboard ship for travel expense purposes.

• Tax Home
• Temporary Assignment or Job
• What Travel Expenses Are Deductible?

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