What Are Commuting Miles for Tax Purposes: IRS Rules and Exceptions

Commuting miles for tax purposes are the trips you make between your home and your regular workplace, and the IRS treats them as personal expenses you cannot deduct — no matter the distance, the vehicle, or whether you take work calls along the way.¹ Business mileage is different: travel between work locations, to temporary job sites, or from a qualifying home office can be deducted at the 2026 federal standard rate of 72.5 cents per mile.² Knowing where that line falls keeps you from claiming miles that trigger penalties or skipping ones you’re entitled to.

How the IRS Defines Commuting

Commuting is your daily trip from home to your main or regular place of work and back at the end of the day. Driving, riding a bus, taking the subway, or hailing a taxi — the classification doesn’t change. Even parking fees at your regular workplace are nondeductible commuting costs.¹

The rule turns on your “tax home,” which is the entire city or general area where your main place of business sits, not necessarily where your family lives. If you work in one city and live in another, the IRS still treats the work city as your tax home, and any travel between your residence and that tax home is commuting.³

Who Can Deduct Business Mileage at All

Before working out which miles qualify, check whether you’re allowed to deduct any of them. Federal law bars most W-2 employees from deducting unreimbursed business expenses, including mileage. The restriction took effect in 2018 and has been made permanent. If your employer doesn’t reimburse you, you generally can’t write those miles off on your personal return.

Only four narrow categories of employees may still deduct unreimbursed business mileage, using Form 2106:⁴

Armed Forces reservists traveling to perform reserve duties.
Qualified performing artists who worked for at least two employers, earned at least $200 from each, had business expenses exceeding 10% of performing-arts income, and had adjusted gross income of $16,000 or less before the deduction.
Fee-basis state or local government officials.
Employees with impairment-related expenses necessary to perform their job.

Self-employed people — sole proprietors, independent contractors, freelancers, gig drivers — face no such restriction. They deduct business mileage on Schedule C. If you receive a 1099 rather than a W-2, the commuting-versus-business distinction hits your bottom line directly.

When a Trip Stops Being Commuting

Several situations convert what looks like a commute into deductible business travel. The trigger is usually a second workplace, a temporary assignment, or a qualifying home office.

Travel Between Multiple Workplaces

If you work at more than one location in the same day, the mileage between those locations is deductible business travel. Once you’ve arrived at the first workplace and started your workday, moving to a second active job site is a business necessity.³ The trip from home to the first location is still a personal commute, and the drive from the last workplace home at the end of the day is also nondeductible. Only the miles in between qualify.

Travel to a Temporary Work Location

Travel to a temporary work location can be deductible even though your regular commute isn’t. The IRS defines a temporary assignment as one you realistically expect to last one year or less. If you have at least one regular work location and travel to a temporary site in the same trade or business, you can deduct the round-trip mileage between home and the temporary site, regardless of distance.¹ If you have no regular workplace but ordinarily work in the metro area where you live, you can deduct transportation to a temporary site outside that metro area.

The one-year rule turns on your realistic expectation at the start, not on how long the job actually lasts. If you expect an assignment to run 18 months but it wraps up in 10, the IRS still treats the location as indefinite from day one, and none of the travel is deductible.³ If your expectation changes partway through — an assignment you thought would end in nine months gets extended past the one-year mark — travel is deductible only up to the point your expectation changed. After that, the location becomes your new tax home and further travel is nondeductible commuting.⁵

Trips From a Qualifying Home Office

A qualifying home office changes the equation entirely. When your home is your principal place of business, the workday starts the moment you begin working there, and any later trip to another work location in the same trade or business counts as business travel rather than commuting.⁶ That applies whether the destination is temporary or regular, and regardless of distance.

Two tests have to be met. First, you must use a specific area of your home exclusively for business, with no personal use at all.⁷ The space doesn’t need a permanent wall, but it must be identifiable as a distinct area. Second, you must use that space regularly for administrative or management tasks of your business and have no other fixed location where you perform a substantial amount of those activities.⁸ Rideshare and delivery drivers who manage their bookings, records, and admin from a qualifying home workspace can treat the first pickup run and the drive home from the last drop-off as business miles rather than commuting.

Hauling Tools Doesn’t Change the Answer

A common misconception: carrying tools or work equipment in your vehicle during your commute doesn’t convert the trip into business travel. The IRS is explicit on this point.¹ You can deduct additional costs of transporting the items themselves, such as renting a trailer to tow heavy equipment, but the underlying commuting mileage stays nondeductible.

What Employees Can Do Instead

Because most employees can’t deduct business mileage on their own return, employer reimbursement is the primary way to recover the cost. When an employer reimburses under an “accountable plan,” the payments are tax-free — they don’t appear on your W-2 and aren’t subject to income or payroll taxes. An accountable plan requires a business connection, substantiation with records, and return of any excess reimbursement within a reasonable time. Payments made without those elements are treated as taxable wages.

Even though commuting costs aren’t deductible, your employer can offset them with qualified transportation fringe benefits. For 2026, an employer can provide up to $340 per month tax-free for combined transit passes and commuter highway vehicle transportation, plus a separate $340 per month for qualified parking.⁹ These amounts are excluded from your income and not subject to payroll taxes.

Calculating Deductible Miles in 2026

If you’re eligible to deduct business mileage, you choose between two methods for each vehicle. The choice you make in the first year the car is used for business can lock you in.

Standard Mileage Rate

The 2026 IRS standard mileage rate for business use is 72.5 cents per mile.² Multiply your total business miles by the rate. It applies to gasoline, diesel, electric, and hybrid vehicles alike. Parking fees and tolls tied to business travel are deductible on top of the standard rate.¹⁰ To use this method, you must choose it in the first year the vehicle is available for business.

Actual Expense Method

The actual expense method requires tracking every cost of operating the vehicle: gas, oil, repairs, tires, insurance, registration, licenses, and depreciation (or lease payments for a leased vehicle).¹⁰ You then calculate the business-use percentage of total miles and apply that percentage to your costs. It’s more recordkeeping, but it can produce a larger deduction if you drive an expensive vehicle or have high operating costs. Switching from the standard rate to actual expenses in a later year forces you to use straight-line depreciation for the vehicle’s remaining useful life.

What Your Records Have to Show

The IRS requires you to substantiate every business mile. Without records the entire deduction can be disallowed in an audit, with back taxes, interest, and penalties. Federal law requires four elements for each trip:¹¹

The date of the trip.
The number of miles driven for the trip, plus total miles for the year.
The destination — city, town, or area.
The business purpose — meeting a client, visiting a job site, picking up supplies.

Record these at or near the time of the trip. The IRS gives more weight to a log kept in real time than to a summary reconstructed later.¹ A GPS-based mileage app that captures timestamps and trip details automatically satisfies the requirement as long as the records are complete and you can produce them on request. Paper logs work too; the IRS doesn’t require any particular format, only that all four elements are present for every trip.

Self-employed taxpayers report car and truck expenses on Schedule C. The narrow set of employees still eligible use Form 2106.⁴ Either way, keeping a running log through the year is far easier than piecing one together at tax time.

1
Internal Revenue Service. Publication 463 (2024), Travel, Gift, and Car Expenses
2
Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents Per Mile, Up 2.5 Cents
3
Internal Revenue Service. Topic No. 511, Business Travel Expenses
4
Internal Revenue Service. Instructions for Form 2106 (2025) Employee Business Expenses
5
Internal Revenue Service. Publication 463 – Travel, Gift, and Car Expenses
6
Internal Revenue Service. Revenue Ruling 99-7
7
Internal Revenue Service. Office in the Home Frequently Asked Questions
8
Office of the Law Revision Counsel. 26 USC 280A – Disallowance of Certain Expenses in Connection With Business Use of Home
9
Internal Revenue Service. Publication 15-B (2026), Employer’s Tax Guide to Fringe Benefits
10
Internal Revenue Service. Topic No. 510, Business Use of Car
11
Office of the Law Revision Counsel. 26 USC 274 – Disallowance of Certain Entertainment, Etc., Expenses