Buying a Vehicle Through Your Business or Personally

Should I buy the vehicle personally or through the business?

The ownership choice determines who may depreciate the vehicle and how personal driving is reported. A business title does not turn personal driving into business mileage; a company car's personal use may require payroll reporting (IRS: Publication 946; IRS: Publication 463; IRS: Publication 15-B).

Before signing, check who will be on the title, loan, registration, and policy. Those state and contract rules vary; a federal tax deduction does not settle them. For the mechanics of paying an owner for business miles, see Reimbursing owner expenses.

Does putting the title in my LLC's name create a deduction?

No. An LLC's federal tax classification, actual business use, and the chosen expense method determine the federal deduction. A single-member LLC is generally disregarded for income tax unless it elects corporate treatment; a domestic multi-member LLC is generally a partnership unless it elects corporate treatment (IRS: LLC classification).

If the LLC is taxed as a corporation, treat the vehicle as a corporate asset and account for the owner's personal trips. If it is disregarded, changing the title alone does not make a purchase an immediate expense. For classification choices, see How LLCs are taxed.

Can my company buy a car I already own, or can I contribute it?

A separate corporation or partnership can generally buy or receive an owner's car. Retitling it into a disregarded single-member LLC does not create a federal income-tax sale or a new purchase basis (IRS: LLC classification). Record the vehicle's current value, original cost, prior business depreciation, debt, and transfer terms.

A corporation and its contributing owner can sign a binding agreement to shift a built-in loss basis reduction from the car to the owner's stock. For this section 362(e)(2)(C) election, the owner files a statement with the timely original return, including extensions, for the transfer year (IRS: section 362 regulations).

A vehicle loan can change a contribution's tax result. A corporation's assumed liabilities above the total adjusted basis of property transferred in a qualifying exchange, or a partner's net debt relief above partnership-interest basis, can trigger gain (US Code: section 357; IRS: Publication 541).

A sale from an owner can fail the section 179 purchase-from-an-unrelated-person rule. Used property also has separate bonus-depreciation acquisition tests; moving a car between you and your company does not automatically restart first-year expensing (IRS: Publication 946). A disregarded single-member LLC generally is not a separate federal income-tax buyer from its owner (IRS: LLC classification).

If you put a previously personal car into business use through a disregarded LLC, its depreciation basis is the lower of adjusted basis or fair market value when business use begins (IRS: Publication 946).

That change in use does not turn a car bought for personal use into a section 179 purchase (IRS: Publication 946).

Can a business-owned car use mileage instead of actual costs?

Generally, yes, if the business chooses the standard mileage method when the owned car first becomes available for business use and meets the method's other conditions. Once it claims section 179, bonus depreciation, or accelerated depreciation on that car, it cannot switch to standard mileage for that car (IRS: Publication 463).

Financing does not limit depreciation basis to the down payment: cost includes borrowed money. Loan principal payments do not create a second deduction (IRS: Publication 946).

The business mileage rate changes during this tax year:

The standard rate already includes a depreciation component. A business cannot also deduct the same car's fuel, repairs, and depreciation. Using five or more cars at the same time also bars the standard mileage method (IRS: Publication 463).

Does a vehicle over 6,000 pounds get a full first-year write-off?

Not automatically. The weight test changes which depreciation cap applies; business use, vehicle design, purchase terms, and the date it is ready for business use still decide the deduction (IRS: Publication 946).

For cars, the passenger-automobile test uses unloaded gross vehicle weight; for trucks and vans, it uses gross vehicle weight. Verify the manufacturer's rating and the vehicle's configuration instead of relying on a model name (IRS: Publication 946).

Section 179 requires more than 50% qualified business use, an eligible purchase, and enough business income; its overall ceiling is $2,560,000, reduced when the cost of section 179 property placed in service exceeds $4,090,000. An elected deduction limited by business income can carry forward; a partnership and its partners each apply the limits (IRS: Publication 946). The 100% bonus applies to eligible property acquired after January 19, 2025. A binding purchase contract before January 20, 2025 can instead bring a lower prior rate; used-property and related-party tests also matter. The vehicle must be placed in service, meaning ready and available for business use, during the tax year claimed (IRS: Notice 2026-11; IRS: Revenue Procedure 2026-15).

The vehicle owner elects section 179 on Form 4562 with its original return or an amended return filed within the legal amendment period, completing Part V for a listed vehicle before Part I. The owner can elect out of bonus depreciation for the entire property class by attaching a statement to a timely return, including extensions, for the year the vehicle enters service. After a timely return without that election, the owner can amend within six months of the original due date, excluding extensions, and label the statement "Filed pursuant to section 301.9100-2" (IRS: Form 4562; IRS: Publication 946).

How do I prove business use and exclude commuting?

Keep a timely log of each business trip's date, destination, purpose, and miles, plus total miles for the year. For a sole proprietor's car, business miles divided by total miles generally sets the deductible share of operating costs and depreciation; receipts support actual costs (IRS: Publication 463). For a company car, log work, commuting, and other personal miles separately. Reporting an owner's personal use as pay does not make those miles qualified business use for section 179 or bonus depreciation when the owner falls under the IRS owner or related-person exclusion. Check that test separately from payroll reporting (IRS: Publication 946).

Driving from home to a regular workplace is personal commuting even if you take business calls or drive a company-titled car. Travel between work locations is generally business travel. A qualifying home office can change the treatment of trips from home to another work location in the same business (IRS: Publication 463). Keep the purchase or lease agreement, weight-rating evidence, receipts, financing records, and the mileage log together.

How is my personal use of a company car reported?

For an employee, including an S corporation owner who is an employee, the company generally values personal use of its car as a taxable fringe benefit and reports it on Form W-2. Business miles supported by records can be excluded as a working-condition benefit; commuting and other personal miles generally cannot (IRS: Publication 15-B).

A specially designed qualified nonpersonal-use vehicle, such as a qualifying cargo truck, can have all employee use excluded as a working-condition benefit. Otherwise, the employer may choose not to withhold income tax on personal vehicle use by giving the employee written notice by January 31 of the election year or within 30 days after first providing the vehicle, whichever is later. It must still withhold applicable Social Security and Medicare taxes, determine the benefit's actual value by January 31 of the next year, and report it on Form 941 and Form W-2 (IRS: Publication 15-B).

If a partnership provides a car to a partner for services, a taxable personal-use benefit may be reported on the partner's Schedule K-1, rather than Form W-2. Its treatment also depends on whether the benefit is compensation, a draw, or repayment under the partnership agreement (IRS: Publication 15-B; IRS: Publication 541).

The employer may use an eligible valuation method, such as annual lease value or the cents-per-mile rule, subject to that method's requirements. This cents-per-mile rule values personal use; it is separate from the standard mileage method for deducting business driving. The simplified commuting valuation rule is unavailable for a control employee, which can include an owner. The company must handle applicable payroll reporting and taxes, not merely book all car payments as business costs (IRS: Publication 15-B; IRS: Publication 463).

A sole proprietor owes the business's employment taxes directly, without a willfulness test. A disregarded LLC is a separate employer for payroll tax. For an LLC, partnership, or corporation, an owner, officer, partner, or other person who controls payroll tax payments and willfully fails to collect or pay them can owe a penalty equal to the unpaid trust-fund tax personally under section 6672. The IRS generally has three years from the following April 15 or a later filing to assess it; an unfiled or fraudulent return can leave no limit. A proposed-penalty notice gives 60 days to appeal, or 75 days if addressed abroad. Collection generally lasts ten years after assessment (IRS: LLC employment tax; IRS: personal liability; IRS: assessment period; IRS: appeal notice).

If the business leases the car, what can it deduct?

For a sole proprietor using the actual-cost method, deduct the business-use share of lease payments, not the personal or commuting share. A company that leases a car for an employee must also account for personal use as a fringe benefit. Spread advance payments over the lease; payments that buy the vehicle are not lease deductions (IRS: Publication 463; IRS: Publication 15-B).

For a passenger automobile leased for at least 30 days, a starting fair market value above $62,000 can trigger an annual inclusion amount that reduces the lease deduction. The IRS table for a lease beginning this tax year uses the vehicle's starting value, lease year, days, and business-use share. Check that table rather than using the purchase depreciation cap for a lease (IRS: Revenue Procedure 2026-15; IRS: Publication 463). A business that starts standard mileage on a leased car must use it throughout the lease, including renewals (IRS: Publication 463).

What if business use falls or the business sells the car?

If a listed vehicle's qualified business use falls to 50% or less after a year above that level, the taxpayer generally must include excess prior depreciation in income. That calculation can recapture section 179 and bonus depreciation; it also increases the vehicle's adjusted basis (IRS: Publication 946).

On a sale, compare proceeds with adjusted basis after depreciation allowed or allowable. Gain up to prior depreciation is generally ordinary income, and the business and personal portions may need separate treatment. A fully deducted vehicle can therefore create taxable gain when sold (IRS: Publication 544; IRS: Publication 463). Keep the prior depreciation schedule before selling or transferring it.

Example

Illustrative US dollars. A sole owner buys an $80,000 SUV through a disregarded LLC. The vehicle is rated above 6,000 pounds, is eligible for bonus depreciation, and is ready for business use this year. The owner drives 12,000 documented business miles out of 16,000 total miles. Business use is 75%, so the business basis is $60,000; the remaining $20,000 is personal. If every bonus-depreciation condition is met, the federal first-year deduction on that business basis can be $60,000. The weight rating alone did not create an $80,000 deduction, and later lower business use or a sale can produce income.

Different for you?

• You will own the car personally and want your S corporation to pay for work trips: see Reimbursing owner expenses.
• You have not chosen how the LLC is taxed: see How LLCs are taxed.
• You are comparing other equipment purchases before year-end: see Lowering your business tax.
• Your S corporation will provide the car for personal use: see How S corporations are taxed for the entity context, and get corporate tax help to value and report the benefit.
• You are transferring a car you already own, claiming first-year expensing on mixed use, or selling a previously deducted vehicle: bring the title, purchase or lease terms, weight rating, prior basis and depreciation, financing details, and mileage logs to corporate tax help. State depreciation may differ from the federal result.