Vehicle and Auto Deductions: Standard Mileage vs Actual Expense

Two methods, one choice

Every business mile you drive can generate a tax deduction. The IRS gives you two ways to calculate it, and you make the choice in the first year you use a vehicle for business. Choose carefully — switching from actual expense (once depreciation has been claimed) back to standard mileage is not allowed.

Standard mileage rate

The IRS sets a standard mileage rate each year that covers the average cost per mile of operating a vehicle — gas, maintenance, insurance, registration, and a depreciation component are all built in. For 2025 the rate is 70 cents per milefor business driving. The IRS typically announces the following year’s rate in December.

To use this method: multiply total business miles driven by the rate. That’s the deduction. No receipts for gas or oil changes needed — just the mileage log.

Actual expense method

The actual expense method deducts your real costs, prorated by the percentage of miles driven for business. If you drove 12,000 miles total and 8,400 were business (70%), you deduct 70% of every vehicle expense.

What’s deductible under actual expense:

• Gas and oil
• Insurance premiums
• Repairs and maintenance
• Registration and license fees
• Lease payments (for leased vehicles)
• Depreciation (MACRS, Section 179, or bonus depreciation) — for owned vehicles
• Tires, car washes, parking fees at business destinations

The actual method typically wins for high-cost vehicles where the depreciation deduction in year one is significant — particularly for heavy vehicles not subject to the luxury car limits.

Commuting miles are never deductible

The most common mistake: deducting the drive from home to your office or regular workplace. The IRS considers this commuting — personal travel — regardless of what you discuss on the call during the drive.

Business miles start at your first business destination that isn’t your regular workplace. If you drive from home directly to a client site, those miles are deductible. If you drive from home to your office first, then to a client, only the office-to-client leg is business mileage.

Exception: If your home is your principal place of business (dedicated home office that qualifies under IRS rules), then driving from home to any other business location may qualify as business mileage.

Vehicle depreciation limits

The IRS imposes annual depreciation caps on passenger vehicles(GVWR under 6,000 lbs) — called “luxury vehicle” limits — regardless of the actual purchase price:

• First year (2025, with bonus depreciation): ~$20,400 maximum deduction
• First year (2025, no bonus depreciation): ~$12,400 maximum
• Years 2–4: ~$19,800, $11,900, $7,160 respectively

A $60,000 sedan does not generate a $60,000 first-year deduction. You’re limited to $20,400 maximum — and the remaining basis is depreciated over subsequent years within the annual caps.

Vehicles over 6,000 lbs GVWR (trucks, large SUVs, vans) are not subject to the passenger car limits. They can use full Section 179 and bonus depreciation — but SUVs (6,001–14,000 lbs GVWR) have a separate Section 179 cap of $28,900 in 2025. Full-size trucks and cargo vans over 6,000 lbs have no such cap.

Buying a heavy SUV or truck specifically for the tax deduction is a real strategy — but the vehicle must have genuine business use and the documentation to back it up.

S-corp owners and vehicle deductions

S-corp owners who use a personally-owned vehicle for business can’t take the vehicle deduction directly on their personal return (employee business expenses were eliminated by TCJA 2017). The correct approach is an Accountable Plan — the S-corp reimburses you for business mileage at the IRS rate, and the corporation takes the deduction. The reimbursement is tax-free to you.

Alternatively, if the vehicle is titled to the S-corp, the corporation can deduct actual expenses directly. This requires the vehicle to be a corporate asset and tracked as such on the balance sheet.