Buying a Vehicle Through Your S-Corp: 2026 Tax Guide

Estimated read time: 7 minutes

Buying a vehicle through your S-corp can cut your tax bill, but only for the business-use portion. This means that personal driving does not qualify. The amount you can deduct also depends on the depreciation method you choose. Good recordkeeping helps support the deduction if the IRS ever asks about it.

What You Will Learn

• How business-use percentage determines which depreciation method you can use
• The difference between the standard mileage rate and the actual expense method
• Current depreciation and Section 179 limits for vehicles placed in service during 2026
• How personal use of a company vehicle becomes taxable income to the owner
• The most common mistakes owners make when deducting vehicle costs

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How Your Driving Affects the Deduction

The IRS separates business driving from non-business driving, so miles you drive for personal reasons do not count toward the vehicle deduction. Your S-corp also needs to account for that personal use on your W-2.

Your business mileage also affects how you depreciate the vehicle. When more than half of your driving relates to the business, you may qualify for accelerated depreciation. When business driving falls to 50% or less, you must use straight-line depreciation over a longer recovery period.

To prevent problems with the IRS, keep a mileage log. Note why you took each trip and record the vehicle’s odometer readings at the beginning and end of the year.

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Two Ways to Deduct Vehicle Costs

The vehicle’s ownership determines how your S-corp handles the deduction. If you personally own or lease the vehicle, the S-corp may generally reimburse your business mileage under an accountable plan. If the S-corp owns or leases the vehicle, the corporation generally deducts the vehicle’s actual costs and depreciation.

Standard Mileage Rate

When you personally own or lease the vehicle, the S-corp can generally reimburse you for business mileage using the standard mileage rate. The standard mileage method gives you a set amount for each business mile you drive. That rate covers costs such as depreciation, fuel, and maintenance.

For 2026, the IRS rate is 72.5 cents per mile for the first half of the year and 76 cents per mile for the second half.

Here are the main rules that apply to the standard mileage method:

Actual Expense Method

The actual expense method works from what you actually spend on the vehicle. When you personally own or lease the vehicle, the S-corp may generally reimburse the business portion of properly substantiated actual expenses. When the S-corp owns or leases the vehicle, the corporation generally deducts the actual operating costs and depreciation.

You calculate the business share by dividing business miles by total miles driven, then applying that percentage to your total costs for the year.

These are some of the expenses you may be able to include:

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Depreciation Limits for Vehicles Placed in Service in 2026

Passenger vehicles have annual depreciation limits, which keep owners from taking large deductions too quickly on higher-priced vehicles.

For vehicles placed in service during 2026, the limits are:

Heavier Vehicles Face a Different Cap

The above limits apply to vehicles with a gross vehicle weight rating of 6,000 pounds or less. A vehicle used less than 100% for business gets a lower limit based on the business-use percentage.

Vehicles over 6,000 pounds avoid the passenger vehicle depreciation caps, but some heavy SUVs have a separate Section 179 limit of $32,000. The $32,000 Section 179 SUV limit does not apply to certain vehicles that are not treated as sport utility vehicles under Section 179, including certain vehicles designed to seat more than nine passengers behind the driver, vehicles equipped with an open cargo area of at least six feet, and certain vehicles with an integral enclosure and no seating behind the driver.

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Section 179 Expensing in 2026

Section 179 lets an eligible business deduct the full cost of qualifying property in the year it goes into service. The deduction cannot exceed your business’s taxable income, so it cannot create a net operating loss. Any unused amount carries forward to a future year.

Here are the key Section 179 limits for 2026:

Bonus Depreciation Still Applies, With Limits

Bonus depreciation can let you claim more depreciation in the first year. For 2026, the rules depend on when you acquired the vehicle:

• Vehicles acquired after January 19, 2025, and placed in service during 2026 can qualify for 100% bonus depreciation.
• Vehicles acquired before January 20, 2025, may qualify for a lower bonus depreciation rate.

Bonus depreciation does not increase the annual passenger vehicle limits. The same caps still apply.

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Who Owns the Vehicle?

An S-corp can own the vehicle, or you can own it personally and have the business reimburse you. An accountable plan can cover the business costs when you own the vehicle, but each expense needs a clear business reason and proper records. You also need to return any excess reimbursement promptly.

Here is how the two approaches compare:

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Common Misconceptions Worth Correcting

A few common ideas about S-corp vehicles can lead to the wrong tax treatment. Here are three worth clearing up:

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Further Reading

• S-Corp Audit Risk What to Know in 2026
• S-Corp Tax Strategies to Maximize Savings in 2026
• Partnership vs S-Corp Taxation: Key Differences in 2026