All articles 4 min read

Travel Entirely for Business or Considered Entirely for Business: Business Travel and Vehicle Expenses (2025 IRS Guide)

This guide covers “Travel Entirely for Business or Considered Entirely for Business” within business travel and vehicle expenses. The following material presents the IRS treatment of this topic, including the qualifications, exceptions, and examples in the source section. Read the rules alongside the facts of your own situation before deciding what to report, deduct, or document.

Adapted from Publication 463 (2025), Travel, Gift, and Car Expenses, published by the Internal Revenue Service. This guide retains the source edition’s years, amounts, deadlines, and examples. It is guidance for that edition, not a statement that the same figures apply to every tax year.

Context for these rules

If any part of your business travel is outside the United States, some of your deductions for the cost of getting to and from your destination may be limited. For this purpose, the United States includes the 50 states and the District of Columbia.

How much of your travel expenses you can deduct depends in part upon how much of your trip outside the United States was business related.

Travel Entirely for Business or Considered Entirely for Business

You can deduct all your travel expenses of getting to and from your business destination if your trip is entirely for business or considered entirely for business.

Travel entirely for business.

If you travel outside the United States and you spend the entire time on business activities, you can deduct all of your travel expenses.

Travel considered entirely for business.

Even if you didn’t spend your entire time on business activities, your trip is considered entirely for business if you meet at least one of the following four exceptions.

Exception 1—no substantial control.

Your trip is considered entirely for business if you didn’t have substantial control over arranging the trip. The fact that you control the timing of your trip doesn’t, by itself, mean that you have substantial control over arranging your trip.

You don’t have substantial control over your trip if you:

  • Are an employee who was reimbursed or paid a travel expense allowance, and

  • Aren’t related to your employer, or

  • Aren’t a managing executive.

“Related to your employer” is defined later in chapter 6 under Per Diem and Car Allowances.

A “managing executive” is an employee who has the authority and responsibility, without being subject to the veto of another, to decide on the need for the business travel.

A self-employed person generally has substantial control over arranging business trips.

Exception 2—outside United States no more than a week.

Your trip is considered entirely for business if you were outside the United States for a week or less, combining business and nonbusiness activities. One week means 7 consecutive days. In counting the days, don’t count the day you leave the United States, but do count the day you return to the United States.

Example.

You traveled to Brussels primarily for business. You left Denver on Tuesday and flew to New York. On Wednesday, you flew from New York to Brussels, arriving the next morning. On Thursday and Friday, you had business discussions, and from Saturday until Tuesday, you were sightseeing. You flew back to New York, arriving Wednesday afternoon. On Thursday, you flew back to Denver.

Although you were away from your home in Denver for more than a week, you weren’t outside the United States for more than a week. This is because the day you depart doesn’t count as a day outside the United States.

You can deduct your cost of the round-trip flight between Denver and Brussels. You can also deduct the cost of your stay in Brussels for Thursday and Friday while you conducted business. However, you can’t deduct the cost of your stay in Brussels from Saturday through Tuesday because those days were spent on nonbusiness activities.

Exception 3—less than 25% of time on personal activities.

Your trip is considered entirely for business if:

  • You were outside the United States for more than a week, and

  • You spent less than 25% of the total time you were outside the United States on nonbusiness activities.

For this purpose, count both the day your trip began and the day it ended.

Example.

You flew from Seattle to Tokyo, where you spent 14 days on business and 5 days on personal matters. You then flew back to Seattle. You spent 1 day flying in each direction.

Because only 5/21 (less than 25%) of your total time abroad was for nonbusiness activities, you can deduct as travel expenses what it would have cost you to make the trip if you hadn’t engaged in any nonbusiness activity. The amount you can deduct is the cost of the round-trip plane fare and 16 days of non-entertainment-related meals (subject to the 50% limit), lodging, and other related expenses.

Exception 4—vacation not a major consideration.

Your trip is considered entirely for business if you can establish that a personal vacation wasn’t a major consideration, even if you have substantial control over arranging the trip.

Using the guidance

Keep the documents that establish the dates, amounts, and circumstances described above. References to other chapters, forms, worksheets, or earlier and later sections refer to the linked IRS publication. Check the full publication and its updates before relying on a rule for a different tax year or a situation not addressed here.

Sources and further reading

The cited U.S. government text is in the public domain. Source accessed October 28, 2026. Fynoptic has organized this material for educational use and is independent of, and not endorsed by, the IRS.

Back to all articles