How do I deduct vehicle expenses for business use? Standard mileage vs actual expenses

You have two methods for deducting vehicle expenses for business use: the standard mileage rate or actual expenses. You generally choose one method for each vehicle and must stick with some restrictions.

Method 1: Standard Mileage Rate (Simpler)

• 2024 rate: 67 cents per mile for business use
• Multiply your total business miles by $0.67
• Example: 15,000 business miles × $0.67 = $10,050 deduction
• You can also deduct parking fees and tolls separately (on top of the mileage rate)
• You CANNOT deduct gas, insurance, repairs, depreciation, or lease payments separately — they're included in the rate

Method 2: Actual Expenses (More work, potentially bigger deduction)

Track all vehicle costs and multiply by your business-use percentage:

• Gas and oil
• Insurance
• Repairs and maintenance
• Tires
• Registration fees
• Depreciation (or lease payments)
• Loan interest (for self-employed)
• Car wash

Example: Total annual car costs = $12,000. Business use = 70%. Deduction = $8,400 + depreciation.

Which method is better?

• Standard mileage is better for: Fuel-efficient cars, newer cars with low maintenance, high-mileage drivers, people who don't want to track every receipt
• Actual expenses is better for: Expensive vehicles, cars with high insurance/repair costs, luxury vehicles (where the mileage rate understates true costs), vehicles used heavily for business

Important rules:

• You must choose standard mileage in the first year you use the car for business if you want to use it in future years. If you start with actual expenses, you can switch to standard mileage later.
• If you use the car for both business and personal, you MUST track and separate business miles. A mileage log is essential — the IRS frequently disallows vehicle deductions due to inadequate documentation.
• You cannot use the standard mileage rate for more than 5 vehicles used simultaneously.
• Commuting is never deductible — miles from home to your regular workplace are personal, not business.

What qualifies as business miles:

• Driving from your office to client sites
• Traveling between two work locations
• Driving to the bank, post office, or supply store for business purposes
• If your home IS your principal place of business, drives from home to client sites or temporary work locations are business miles

Documentation: Use an app like MileIQ, Everlance, or a simple spreadsheet. Record the date, destination, business purpose, and miles for each trip. The IRS requires contemporaneous records (logging at the time of the trip, not reconstructed later).