Compare IRS standard mileage rate to actual vehicle expense method for your business miles.
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Standard mileage
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Actual expense
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Two ways to write off a business vehicle
The IRS gives eligible self-employed drivers a choice for deducting a car used for work. In 2026 the standard mileage method requires two rates: 72.5 cents per business mile from January through June and 76 cents from July through December. This calculator keeps the two periods separate and adds them together. The actual expense method adds up everything the car costs you for the year, gas, maintenance, insurance, and depreciation, then deducts the share that matches your business use. Both methods land on Schedule C for a sole proprietor. This calculator runs them side by side so you can see which produces the bigger deduction for your situation before you commit.
The business use percentage is the hinge of the whole comparison. It is your business miles divided by your total miles, and under the actual method it scales every dollar of car expense. Drive 70 percent of your miles for work and you deduct 70 percent of your gas, insurance, and depreciation. The standard method bakes all of that into one rate, which is why it is so much simpler to track.
Where the standard rate pulls ahead
As a rule of thumb, the standard rate wins for fuel efficient and inexpensive cars with high business mileage, because the standard allowance can add up faster than modest real costs. The actual method can win for expensive vehicles, heavy SUVs, or older cars with steep maintenance and depreciation, where the real costs outrun the per mile rate. A leased luxury car driven mostly for work often deducts more under actual. The only way to know for your numbers is to run both, which is what this page does.
12,000 business miles across both 2026 periods
Picture a consultant who drives 6,000 business miles in each half of 2026, or 12,000 out of 20,000 total. The standard method gives $4,350 for the first half plus $4,560 for the second, totaling $8,910. If gas, maintenance, insurance, and depreciation total $8,500, the actual method applies the 60 percent business-use share and produces $5,100. With these inputs, the standard method is $3,810 larger.
The chart contrasts the two deductions for this driver.
The lock-in rule that traps actual-method filers
Here is the trap that costs people the most. In the first year you use a car for business, you can pick either method. But the choice has a one way door. If you start with the standard mileage rate, you can switch to actual in a later year. If you start with actual and claim depreciation, you generally cannot switch back to the standard rate for that vehicle, because the standard rate has a built in depreciation component that the IRS will not let you double count. Starting with the standard rate for an owned vehicle generally preserves more flexibility, but leases and depreciation elections have separate rules. Check the method requirements before filing the first business-use year.
Whichever method you choose, the deduction collapses on audit without a contemporaneous mileage log. You need the date, the miles, and the business purpose of each trip. Apps that track this automatically are worth the few dollars a month. Depreciation under the actual method runs through Form 4562, and a reconstructed log built the night before an audit rarely survives scrutiny.
Are parking and tolls deductible on top of the standard rate?
Yes. Business parking fees and tolls are deductible separately and are not folded into the standard mileage rate. The rate covers the operating and ownership costs of the vehicle itself, gas, wear, depreciation, and insurance, but a parking garage receipt for a client meeting or a highway toll on a business trip is an additional deduction under either method. Keep those receipts and add them to your Schedule C separately.
Can a W-2 employee deduct mileage anymore?
Generally no. The OBBB made permanent the disallowance of miscellaneous itemized deductions subject to the 2 percent floor, including most unreimbursed employee travel. Narrow exceptions remain for certain reservists, fee-basis government officials, qualified performing artists, and eligible educators. Commuting between home and a regular workplace is personal mileage. An accountable reimbursement plan may be available through an employer.
What are the medical and charity rates?
For 2026, eligible medical and qualifying moving mileage is 20.5 cents per mile through June 30 and 23.5 cents from July 1 through December 31. The charitable mileage rate is fixed at 14 cents for the entire year. This calculator compares business mileage only; do not mix medical, moving, charity, commuting, or personal miles into the business fields.
Sources: IRS standard mileage rate table and IRS Announcement 2026-11.