Standard Mileage Rate vs. Actual Expenses: Which Saves More on Taxes?

The IRS lets you deduct vehicle expenses one of two ways: the standard mileage rate (72.5¢/business mile in 2026) or the actual expenses method (every receipt, prorated by business use). One method takes 30 seconds to calculate. The other can take hours but sometimes saves thousands. Here is how to decide which is right for you.

How the standard mileage rate works

You multiply your business miles by 72.5¢ for 2026. That is your deduction. Period. You can also add parking fees and tolls on top. You do not deduct gas, insurance, maintenance, or depreciation separately because the standard rate already bakes those in. The math: 12,000 business miles × $0.725 = $8,700 deduction.

How actual expenses works

You track every dollar you spend on the vehicle: gas, oil, repairs, tires, insurance, registration, lease payments (or depreciation if owned), and car washes. Then you multiply the total by your business-use percentage. If you drove 20,000 miles total and 12,000 were for business, your business-use percentage is 60%. Your total annual vehicle cost was $9,500. Your deduction: $9,500 × 60% = $5,700.

When standard mileage wins

Standard mileage usually wins for fuel-efficient vehicles, older paid-off cars, and high-mileage drivers. The 72.5¢ rate is generous for cars that cost under 50¢/mile to actually operate. A Honda Civic owner driving 15,000 business miles per year almost always comes out ahead with standard mileage. Rideshare and delivery drivers, freelancers using older vehicles, and anyone who drives a lot of miles in a cheap car should default to standard mileage.

When actual expenses wins

Actual expenses usually wins for expensive vehicles, low-mileage drivers, and the first year of new car ownership. If you drive a $70,000 SUV for business, your actual depreciation alone in year one can exceed the standard mileage deduction. Real estate agents and consultants who drive luxury cars for client perception often benefit from actual expenses. Drivers who put fewer than 5,000 business miles on an expensive vehicle should run the numbers both ways.

The lock-in rule you must know

Here is the trap: if you want the option to use standard mileage on a vehicle later, you MUST use standard mileage in the first year you place that vehicle in business service. Choose actual expenses in year one and you are locked into actual expenses forever for that vehicle. This rule does not apply in reverse — start with standard mileage, and you can switch to actual expenses any future year. For leased vehicles, the rule is stricter: whichever method you choose in year one applies for the entire lease, including renewals.

How to actually decide

Run both calculations the first year. Track every receipt for actual expenses, AND log every business mile for standard mileage. At tax time, compare the two and take whichever is larger. After year one, keep tracking miles regardless — even if you choose actual expenses, your business-use percentage depends on miles driven. Most people simplify after year one by sticking with standard mileage and tracking only miles plus parking and tolls.