Answer
Can I deduct my car expenses as self-employed?
Short answer
Yes. Self-employed people on Schedule C can deduct car expenses using the standard mileage rate (67 cents per mile in 2026) or the actual expense method (real costs of gas, insurance, maintenance, and depreciation, multiplied by the business use percentage). The standard mileage rate must be chosen in the first year the vehicle is used for business. Both methods require a contemporaneous mileage log documenting date, destination, business purpose, and miles for each business trip.
Standard mileage vs actual expense — 12,000 business miles
Standard mileage rate
$8,040
12,000 miles × $0.67 (2026 rate)
- Must be chosen in year 1 of business use
- Mileage log required
- Parking and tolls deductible separately
Actual expense method (70% biz use)
$6,090
70% of $8,700 in actual costs
- Gas, insurance, maintenance, depreciation
- Mileage log still required for biz %
- Section 179 option in year of purchase
In this example, actual expenses produce a $-1,950 larger deduction. Results vary by vehicle cost, mileage, and usage percentage.
Standard mileage rate: 67 cents per mile for 2026 (announced by the IRS each December). Multiply total business miles by $0.67. This rate already incorporates implied depreciation, gas, oil, and maintenance, so you cannot separately deduct those costs if you use this method. You can still deduct actual parking fees and tolls in addition to the mileage rate.
Actual expense method: tally all vehicle costs for the year: gas, oil, insurance, registration fees, repairs, tires, car loan interest, and depreciation (using MACRS or Section 179). Multiply the total by your business use percentage (business miles divided by total miles driven). This method requires more recordkeeping but can produce a larger deduction, particularly for expensive vehicles or high fuel and insurance costs.
Section 179 and bonus depreciation for vehicles: if you use the actual expense method, you may be able to expense a significant portion of a new or used vehicle's cost in the year of purchase using Section 179 or bonus depreciation. Luxury vehicle limits cap the deduction for standard passenger cars (roughly $12,400 in year one for 2026). Heavy SUVs over 6,000 lbs gross vehicle weight have higher Section 179 limits (up to $30,500 in 2026 for SUVs). Work trucks and vans have fewer limitations.
The mileage log requirement: the IRS requires contemporaneous records under IRC §274(d). That means recording the date, business destination, business purpose, and miles at or near the time of each trip, not reconstructed at year-end from memory. An app (MileIQ, Everlance, TripLog) or a simple spreadsheet updated after each trip creates a defensible log.
What qualifies as a business mile: driving to a client's office, driving to pick up business supplies, driving between business locations, driving to a professional conference. Commuting between your home and a regular, fixed primary work location does not qualify, even if you're self-employed. If your home qualifies as your principal place of business (via the home office deduction), driving from home to a client site is a business trip, not a commute.
Annual tax savings by business mileage
Standard mileage rate, 32% marginal rate.
Tax savings on the deduction at $0.67/mile (2026). The mileage log is the price of admission.
5K miles/yr
Deduction: $3,350
10K miles/yr
Deduction: $6,700
15K miles/yr
Deduction: $10,050
20K miles/yr
Deduction: $13,400
Standard mileage method at 2026 rate. 32% federal marginal rate assumed. State savings additional.
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