Business mileage is any driving you do for a clear work purpose beyond your regular commute — client visits, trips between job sites, runs to pick up supplies, drives to a conference, and similar work-motivated travel. For 2026, eligible taxpayers deduct qualifying miles at 72.5 cents per mile.1IRS.gov. 2026 Standard Mileage Rates The trickier question is which of your specific trips clear that bar, because the IRS routinely disallows mileage claims that miss the “ordinary and necessary” standard or lack proper documentation, and it can add a 20-percent accuracy penalty on top.2Internal Revenue Service. Accuracy-Related Penalty
The Underlying Test Every Trip Has to Pass
A deductible business trip is an ordinary and necessary expense of your trade or business. “Ordinary” means common and accepted in your line of work. “Necessary” means helpful and appropriate for what you do.3Internal Revenue Service. Publication 463 – Travel, Gift, and Car Expenses A plumber driving to a client’s house passes both tests without effort. A freelance graphic designer driving to an art museum for inspiration sits in a grayer area. If you can’t state the specific work purpose of a trip in one sentence, leave it off the log.
When the IRS challenges a mileage claim, the fight is almost always about whether the trip had a genuine business motive or was really personal driving dressed up as work.
Miles That Count
Once you’ve arrived at your first work location for the day, every subsequent drive between work sites is business mileage. That’s true whether you’re heading to a second office for the same employer, driving to a different client, or moving between two separate jobs.3Internal Revenue Service. Publication 463 – Travel, Gift, and Car Expenses A contractor who checks in at the main office each morning and then visits three job sites has three deductible legs. The drive in and the drive home are not deductible.4Internal Revenue Service. Revenue Ruling 99-7
Beyond site-to-site trips, the following drives generally qualify:
- Driving to meet a client or customer.
- Picking up office supplies or making a business bank deposit.
- Dropping off a delivery.
- Driving to an industry conference, training seminar, or trade show that benefits your work.5Internal Revenue Service. Topic No. 511, Business Travel Expenses
- Driving from home or office to the airport for a business trip, plus taxi and shuttle fares between the airport, your hotel, and meetings at the destination.
When Your Home Is Your Tax Home
If you have a qualifying home office, your house becomes your tax home. Every drive from home to a client, a supplier, or another work destination is a business trip rather than a commute.3Internal Revenue Service. Publication 463 – Travel, Gift, and Car Expenses For self-employed people who work primarily from home, this rule alone often doubles or triples the deductible miles in a year.
The home office has to meet the IRS’s requirements to produce that effect. You need a dedicated space used exclusively and regularly as your principal place of business, and you can’t have another fixed location where you handle the administrative or management side of your work.6Internal Revenue Service. Topic No. 509, Business Use of Home A corner of the dining room where you answer emails doesn’t qualify.
Rideshare and Delivery Driving
Uber, Lyft, DoorDash, and similar platform drivers are independent contractors who report income on Schedule C. Deductible miles include driving to pick up a passenger or delivery, the drive during the trip itself, and the miles logged between rides while waiting for the next request. The drive from your home to the area where you start your shift, and the drive home when you’re done, are treated as commuting and don’t count.
Parking Fees and Tolls
Business-related parking fees and road tolls come off separately, on top of the per-mile rate. If you pay $15 to park at a client’s building or $6 in bridge tolls between job sites, those amounts get added to your deduction. Parking at your own regular workplace is a commuting cost and is not deductible.3Internal Revenue Service. Publication 463 – Travel, Gift, and Car Expenses
Miles That Don’t Count
The single most common mistake is claiming your daily commute. Driving from home to your regular workplace and back is a personal expense. The IRS doesn’t care how far you drive, how bad the traffic is, or whether your car has a company logo on every panel.3Internal Revenue Service. Publication 463 – Travel, Gift, and Car Expenses
The creative arguments people try here don’t work. Making business calls on speaker during your morning drive does not convert the commute into a business trip. Having a coworker in the passenger seat while you discuss a project doesn’t change the classification either.3Internal Revenue Service. Publication 463 – Travel, Gift, and Car Expenses Your tax home is the city or general area where your main place of business is located, and the cost of getting from your residence to that tax home is always personal.
The Temporary Work Location Wrinkle
If you have a regular office but get sent to a project site elsewhere, the drive from your home to that temporary location is deductible regardless of distance, as long as the assignment is realistically expected to last one year or less. Once an assignment crosses the one-year mark, or was always expected to, the temporary site becomes your new tax home and the drive turns back into a nondeductible commute.3Internal Revenue Service. Publication 463 – Travel, Gift, and Car Expenses
The rules shift if you have no regular office at all. In that case, driving from home to a temporary work site within your metropolitan area is a nondeductible commute. You can only deduct the drive if the temporary site is outside your metro area. This distinction trips up people who work from coffee shops and co-working spaces without a fixed office.
Who Can Actually Deduct These Miles
Knowing which miles qualify only helps if you’re eligible to claim them. Federal law now permanently bars most W-2 employees from deducting unreimbursed business expenses, including mileage. The suspension of miscellaneous itemized deductions that originally came with the 2017 tax overhaul was made permanent, so waiting for it to expire is no longer an option.3Internal Revenue Service. Publication 463 – Travel, Gift, and Car Expenses
The people who can still deduct business mileage fall into a few categories:
- Self-employed workers — sole proprietors, freelancers, independent contractors, and gig workers who report income on Schedule C or Schedule F.
- Members of a reserve component of the Armed Forces who travel for reserve duties more than 100 miles from home.
- Qualified performing artists and fee-basis government officials, who deduct unreimbursed expenses as an adjustment to gross income on Schedule 1.
If you’re a salaried employee whose employer doesn’t reimburse your driving, the IRS won’t let you write off those miles on your personal return.7Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents Per Mile, Up 2.5 Cents Your practical path is asking your employer to set up an accountable reimbursement plan so mileage payments come to you tax-free.
Records That Turn Qualifying Miles Into a Real Deduction
A trip only counts if you can prove it. The IRS requires you to substantiate four elements for every vehicle expense claim: the amount, the date and destination, the business purpose, and when relevant the business relationship of the person you met.8Office of the Law Revision Counsel. 26 USC 274 – Disallowance of Certain Entertainment, Etc., Expenses In practice, your mileage log needs each trip’s date, starting and ending odometer readings, where you went, and why.
Records made close to the time of the trip carry far more weight than anything reconstructed later. The IRS considers a log kept on a weekly basis timely enough, so you don’t have to pull over and write after every stop. A spreadsheet thrown together the night before an audit almost never holds up.3Internal Revenue Service. Publication 463 – Travel, Gift, and Car Expenses A mileage-tracking app on your phone is the most reliable approach because it timestamps and GPS-tags each trip automatically.
Record your total miles for the year as well — business and personal combined — because the IRS uses the ratio to check your business-use percentage. Note your odometer at the start and end of each calendar year. If your log shows 18,000 business miles but your odometer only moved 20,000, the 90-percent business-use rate will invite questions. Sloppy records don’t just weaken your deduction; courts have upheld accuracy-related penalties specifically because taxpayers failed to keep adequate books for their vehicle expenses.9Taxpayer Advocate Service. Most Litigated Issues – Accuracy-Related Penalty Under IRC 6662(b)(1) and (2)