Business Travel Mileage Rules (2026): Business vs. Personal Mileage Guide

With the 2026 IRS standard mileage rate at 72.5¢ per mile, rising to 76¢ from July 1, and 2026 CRA km rates at 73¢/67¢ per kilometre, knowing exactly what counts as business travel mileage versus personal driving is one of the highest-return tax skills you can master.

Classify too cautiously and you leave thousands of dollars in legitimate business mileage deductions unclaimed. Classify too aggressively — such as logging your daily office commute as business travel — and an auditor can disallow your deduction and assess penalties.

This comprehensive guide breaks down the official business travel mileage rules for self-employed professionals, 1099 independent contractors, small business owners, and employees seeking mileage reimbursement across every common real-world driving scenario.

What Is Business Travel Mileage?

Tax authorities divide every mile or kilometre you drive into three buckets:

1. Business Mileage (Deductible): Ordinary and necessary driving directly connected to your trade, business, or profession — such as visiting clients, traveling between two work sites, picking up supplies, or driving out of town for a conference.
2. Commuting Mileage (Not Deductible): Driving between your residence and your regular, permanent place of work.
3. Personal Mileage (Not Deductible): Vacation travel, grocery shopping, family errands, and personal detours made during a business trip.

The Golden Rule: Why Daily Commuting Is Never Business Mileage

The single most important rule under IRS Publication 463 (and the CRA's motor vehicle expense rules in Guides T4002 and T4044) is that commuting from home to a regular workplace is always personal mileage.

Even if you:

• Drive 60 miles each way to reach your office or shop
• Have your company logo wrapped on the doors of your truck
• Spend the entire drive on hands-free business phone calls with clients
• Haul heavy tools, equipment, or product samples in the trunk

...the drive between your home and your regular place of work remains a non-deductible personal commute. (Under IRS rules, if you tow a trailer or incur additional out-of-pocket costs solely to transport tools that cannot fit in your vehicle, only the extra cost of hauling the tools may be deductible — not the underlying commuting mileage.)

6 Scenarios That Always Qualify as Deductible Business Mileage

Once you understand the commuting boundary, here are the six core categories of business travel mileage that are 100% eligible for deduction:

1. Driving Between Two Work Locations

Any travel from one business location to another during the same workday is deductible business mileage. This includes:

• Driving from your main office or shop to a client's office
• Driving from Job Site A to Job Site B to Job Site C
• Driving from a regular W-2 job directly to your own side business or a client of it (without stopping at home in between). The miles to your side business are deductible on Schedule C; travel between two W-2 jobs is not deductible for most employees.

2. The Home Office Exception (Principal Place of Business)

Under IRS Revenue Ruling 99-7 (and equivalent CRA home-workspace rules), if your home office qualifies as your principal place of business, your home acts as Work Location #1.

That means every business trip that starts or ends at your home office is deductible business travel mileage, including:

• Driving from your home office to meet a client
• Driving from your home office to a job site or property showing
• Driving from your home office to a secondary office or coworking space
• Driving from your last client appointment back to your home office

To qualify as your principal place of business under IRC Section 280A(c)(1)(A), you must use your home office regularly and exclusively for your trade or business, and it must be the place where you conduct your most important administrative or management activities (with no other fixed location where you conduct substantial administrative work).

3. Temporary Work Locations (The 1-Year Rule)

What if you do not have a qualifying home office? Can you ever deduct the drive from your home to a job site?

It depends on whether you have a regular workplace and whether the destination is a temporary work location (defined as a location where employment or a project is realistically expected to last — and actually does last — one year or less):

• If you have a regular office/shop outside your home: Driving directly from your home to a temporary work location (in the same town or out of town) is 100% deductible business travel mileage.
• If you have NO regular office and NO qualifying home office: Driving from your home to temporary work sites within your metropolitan area is treated as non-deductible commuting; only travel to temporary work locations outside your metropolitan area is deductible.

4. Business Errands and Supply Runs

Short local trips for business operations are some of the most frequently forgotten deductions. Deductible business mileage includes driving to:

• The bank to make a business deposit or meet a loan officer
• The post office, UPS, or FedEx to ship customer orders
• An office supply store, hardware store, or wholesale warehouse to pick up inventory
• A mechanic or car wash (for rideshare, delivery, or dedicated business vehicles)

5. Multi-Stop Routes (Transforming a Commute Into Business Mileage)

Suppose you work at a regular downtown office (no home office exception), and on your way to the office you stop at a client's building to drop off contracts:

• Simply stopping to pick up coffee or dry cleaning does not turn a commute into a business trip.
• However, if you drive from home to a temporary work location or client site, the drive from home to the client AND the drive from the client to your regular office are both deductible under the temporary location rule!

6. Overnight and Out-of-Town Business Travel Mileage

When you travel away from your "tax home" (your city or metropolitan area) for business conferences, client visits, trade shows, or inspecting out-of-state rental properties, your business travel mileage includes:

• Driving your personal vehicle from your home or office to the out-of-town destination and back
• Driving between your hotel, convention center, and client offices (including business meals) while away from home
• Driving from your home to the airport or train station (and back) for a business flight, plus airport parking fees and highway tolls

How to Handle Mixed-Use Trips and Personal Detours

Real life rarely separates business and personal tasks into neat boxes. Here is how to log mixed trips accurately:

Scenario A: Personal Errand During a Business Trip

You drive 18 miles from your home office to a client meeting. On the way back, you take a 4-mile detour off the direct route to pick up groceries before returning home (22 miles total return).

• Deductible business mileage: 36 miles (18 miles there + 18 miles direct return)
• Non-deductible personal mileage: 4 miles (the grocery detour)

Detours like this are where most mixed-use logs fall apart. With automileage.app, you log the business leg and the personal detour as separate business and personal trips, so your deductible mileage stays cleanly separated without any after-the-fact math.

Scenario B: Combining a Business Trip With a Personal Vacation

If you drive 400 miles to another city primarily for business (for example, a 4-day industry conference) and stay an extra Saturday for sightseeing:

• Because the primary purpose of the trip is business (the four conference days far outweigh the single personal day), the entire 800-mile round-trip drive to and from the destination city is deductible business travel mileage.
• Any local miles driven on Saturday for sightseeing are personal and non-deductible.

Quick Reference Table: Business Mileage vs. Personal Commuting

How to Document Your Business Travel Mileage

Knowing a trip is deductible is only step one. To claim it on your tax return, your IRS mileage log or CRA mileage log book must record the date, origin, destination, specific business purpose, and exact distance for every drive.

automileage.app makes separating business travel mileage from personal driving effortless. Log trips in seconds, track your start and end odometer readings, and export audit-ready PDF and CSV mileage reports whenever you need them.

Get started risk-free and capture every deductible business mile in 2026.

Frequently Asked Questions

What qualifies as deductible business travel mileage?

Deductible business travel mileage includes driving between two work locations, driving from a qualifying home office to client sites or suppliers, driving to temporary work locations (expected to last one year or less), running business errands (bank deposits, office supply runs), and driving to airports, hotels, or conferences for out-of-town business trips.

Is my daily commute to the office considered business mileage?

No. Both the IRS and the CRA consider commuting between your home and your regular place of work to be a non-deductible personal expense, regardless of the distance or whether you take business calls during the drive.

Can I deduct business mileage if I work from a home office?

Yes. Under IRS Revenue Ruling 99-7 and CRA guidelines, if your home office qualifies as your principal place of business, travel from your home directly to client locations, secondary offices, or business errands is 100% deductible business mileage.

What counts as a temporary work location for business travel mileage?

A temporary work location is a job site or client office where you realistically expect to work for one year or less. If you have a regular office elsewhere, driving from your home directly to a temporary work location is deductible. If you do not have a regular office, only travel to temporary work locations outside your metropolitan area is deductible.

What happens if I combine a personal errand with a business trip?

You can still deduct the direct business travel mileage, but you must subtract any extra miles added by the personal detour. Never classify personal detour miles as business mileage in your logbook.

What is the 2026 business travel mileage rate?

In the United States, the 2026 IRS standard mileage rate for business travel is 72.5 cents per mile through June 30 and 76 cents per mile from July 1. In Canada, the 2026 CRA reasonable per-kilometre allowance rate is 73 cents per km for the first 5,000 km and 67 cents per km thereafter in the provinces.