When it comes to understanding vehicle business expense deduction, knowing the IRS rules is essential. If you use your car for business, you’re sitting on a significant tax deduction. In 2025, the IRS standard mileage rate is 70¢ per mile — that’s $7,000 for every 10,000 business miles. Here’s how to claim this deduction the right way.
Two Methods for Deducting Your Vehicle
The IRS lets you choose between two approaches each year (with some limitations on switching):
Method 1: Standard Mileage Rate
Multiply your business miles by the IRS rate:
- 2025 rate: 70¢ per mile (check IRS.gov for current rates)
- 2024 rate: 67¢ per mile
Example: 12,000 business miles × 67¢ = $8,040 deduction
The standard mileage rate covers gas, depreciation, maintenance, and insurance — all rolled into one number. All you need to track is your mileage. Use our mileage deduction calculator to see your deduction instantly.
On top of the mileage rate, you can still deduct parking fees and tolls separately — they’re not included in the per-mile rate.
Method 2: Actual Expense Method
Track every vehicle expense and multiply by your business-use percentage:
- Gas and oil
- Insurance
- Registration and taxes
- Repairs and maintenance
- Lease payments
- Depreciation (if you own the vehicle)
Example: Total vehicle costs: $14,000/year. Business use: 60%.
Deduction: $14,000 × 60% = $8,400
Which Method Wins?
It depends on your situation. The actual expense method tends to win for:
- High-value vehicles (luxury, trucks, SUVs)
- High business-use percentage (70%+ for business)
- Vehicles with high insurance, fuel, or maintenance costs
The standard mileage rate tends to win for:
- Older, paid-off vehicles with lower running costs
- Moderate business use (under 60%)
- People who prioritize simplicity and minimal recordkeeping
The only way to know for certain is to calculate both. Important: If you want the option to use actual expenses in a future year, use the actual method from the first year you put the vehicle in service. Once you start with the standard mileage rate on a purchased vehicle, you can generally switch to actual expenses — but not vice versa for leased vehicles.
Mileage Tracking Tips
The IRS requires a contemporaneous mileage log — meaning you should record trips as you make them, not reconstruct them later. At a minimum, log:
- Date of each trip
- Business purpose
- Starting and ending odometer readings (or miles driven)
- Destination or client visited
Free apps like MileIQ, Stride, or Everlance automatically track your trips using GPS. They take minutes to set up and can save you thousands at tax time.
For more tax guidance, see our guides on self-employed tax deductions checklist and business meal deductions. For official IRS information, visit the IRS Topic 510 on business use of car.
What Counts as a “Business Mile”?
Business miles include driving to:
- Client sites, meetings, or job locations
- The bank, post office, or supply store for business purposes
- A coworking space (if it’s your regular place of business)
- Business networking events or conferences
Commuting from home to your regular office does not count — but if you have a qualified home office, trips from home to clients and meetings become business miles, not commuting.
Full guide: Vehicle deduction: standard mileage vs actual expenses →
This article is for educational purposes only. Consult a tax professional for advice specific to your situation.
Section 179 and Bonus Depreciation for Vehicles
If you purchase a vehicle for business use, you may be able to deduct a significant portion of the purchase price immediately using Section 179 or bonus depreciation, rather than depreciating it over years.
However, the IRS places strict “luxury auto” limits on vehicles under 6,000 lbs GVWR. For 2025, the maximum first-year depreciation (including bonus depreciation) for a regular passenger vehicle used 100% for business is approximately $20,400.
Heavy SUVs, trucks, and vans (over 6,000 lbs GVWR) have higher limits. If you purchase a qualifying heavy SUV or pickup truck, you can potentially deduct the full purchase price in the first year, subject to the Section 179 limit for SUVs ($30,500 in 2025) and business use percentage.
Important: If you claim Section 179 or bonus depreciation and later use the car for personal use or sell it, you must recapture (add back to income) any excess depreciation. This is a complex area — consult a tax professional before purchasing a vehicle primarily for tax reasons.
Vehicles in an S-Corp or LLC
How you structure vehicle deductions depends on who owns the car:
- Business-owned vehicle: The business deducts all qualifying expenses directly. You must add personal use to your W-2 income.
- Personally-owned vehicle used for business: You can be reimbursed by your business using an accountable plan (IRS-compliant reimbursement at the standard mileage rate), with no tax consequence to you. This is often the cleanest approach for S-corp owners.
- Sole proprietor (Schedule C): Deduct the business portion of actual costs or standard mileage directly on Schedule C.
For S-corp shareholders who own the vehicle personally and use it for business, the most common approach is reimbursement through an accountable plan. The corporation deducts the reimbursement as a business expense; the shareholder-employee reports no additional income.
Listed Property Rules
Vehicles are “listed property” under IRS rules, which means the IRS subjects them to stricter documentation requirements and limits. If business use falls below 50% in any year, you must switch to straight-line depreciation and may face recapture on previous depreciation claims. This is why accurate mileage records are critical — not just for the deduction, but to establish and maintain your business use percentage each year.
Commuting vs. Business Miles: The Key Distinction
The IRS explicitly excludes commuting from deductible business miles. Commuting is driving from your home to your regular, fixed place of work. However, there are important exceptions:
- If your home is your principal place of business (you have a legitimate home office), driving to client sites or meetings is generally deductible
- Driving between two job sites in the same day is deductible
- Driving to a temporary work location outside your metropolitan area can be deductible
When in doubt, document the business purpose of each trip. Your mileage log entry should record: date, destination, business purpose, and miles driven.
Bottom Line
Vehicle deductions are one of the most valuable self-employment tax benefits — and one of the most scrutinized by the IRS. The key is keeping good records from day one: use a mileage tracking app or maintain a detailed log, keep receipts if using actual expenses, and document the business purpose of every trip. With accurate records, vehicle deductions can save you thousands each year.