Can I Buy a Car Through My Business? Tax Deductions and Rules

Yes, buying a car through your business is allowed for any properly registered entity, and it can unlock meaningful tax deductions if the vehicle is used more than half the time for business. LLCs, corporations, partnerships, and sole proprietors can all put a vehicle to business use, though only entities separate from their owners actually hold title in the business name. To claim the biggest write-offs — Section 179 expensing and bonus depreciation — business use has to exceed 50% of total miles, and the vehicle purchase must be ordinary and necessary for your trade or business.¹

Which Businesses Can Title a Vehicle

LLCs, S-corporations, C-corporations, partnerships, and sole proprietorships can all purchase a vehicle for business use. What the state cares about is that the entity is properly formed and in good standing: annual reports filed, fees paid. If your registration has lapsed or been revoked, you generally cannot title a vehicle in the business name until you bring the entity back into compliance.

Sole proprietors follow a slightly different path. A sole proprietorship is not a separate legal entity, so the title stays in your personal name. You still claim business deductions on Schedule C based on how much you use the vehicle for work.² An LLC or corporation, by contrast, titles the vehicle directly in the business name, creating a cleaner separation between personal and business assets.

The purchase also has to pass the basic federal test for any business expense: it must be ordinary and necessary for your trade or business.¹ A delivery company buying a van easily meets that test. A freelance graphic designer buying a sports car for weekend drives does not.

The 50 Percent Business Use Rule

The IRS requires more than 50% of a vehicle’s total mileage to go toward business activities before you can claim Section 179 expensing or bonus depreciation.³ If business use drops to 50% or below, those accelerated deductions disappear, and you’re left with straight-line depreciation over five years.

Commuting between your home and your regular workplace does not count as business mileage. The IRS treats commuting as a personal expense no matter how far you drive.³ One exception: if you have a home office that qualifies as your principal place of business, trips from home to other work locations in the same business do count.

Heavy personal use of a business-titled vehicle also creates liability risk beyond taxes. Courts look at whether owners respect the separation between themselves and their entity, and regularly driving the company car for personal errands is one factor that can lead a court to disregard that separation, exposing your personal assets to business liabilities.

Tax Deductions You Can Claim

Three deduction tools drive most of the tax benefit: Section 179 expensing, bonus depreciation, and standard depreciation. Each has different rules, and vehicle weight is often the deciding factor.

Section 179 Expensing

Section 179 lets you deduct the full purchase price of a qualifying vehicle in the year you place it in service instead of spreading the deduction over several years. The overall Section 179 limit is adjusted for inflation and exceeds $1 million for 2026.⁴ But two caps apply specifically to vehicles:

Passenger automobiles with a gross vehicle weight rating (GVWR) of 6,000 pounds or less fall under the luxury automobile limits in Section 280F, which cap your total first-year deduction (Section 179 and depreciation combined). For passenger automobiles placed in service in 2025, the first-year cap was $20,200 with bonus depreciation, or $12,200 without it. The IRS adjusts these figures annually.⁵
Heavy SUVs rated between 6,000 and 14,000 pounds GVWR escape the passenger caps but face a separate Section 179 limit. That limit was $31,300 for 2025, and the inflation-adjusted figure for 2026 is approximately $32,000. Any remaining cost above the cap can be recovered through bonus depreciation.⁴

Bonus Depreciation

The One, Big, Beautiful Bill restored permanent 100% bonus depreciation for qualified property acquired after January 19, 2025.⁶ For a vehicle placed in service in 2026, that potentially means writing off the full cost in year one. Passenger automobiles under 6,000 lbs GVWR are still subject to the Section 280F annual caps described above.⁵

Why the 6,000-Pound Line Matters

Vehicles rated above 6,000 lbs GVWR — full-size SUVs, pickup trucks, and vans — bypass the passenger automobile depreciation caps. A business buying a qualifying heavy SUV for $65,000 could deduct up to roughly $32,000 under Section 179 and then apply 100% bonus depreciation to the rest, potentially writing off the entire purchase price in the first year. A business buying a $65,000 sedan would be limited to about $20,200 the first year, with the remainder stretched over later years. That’s why many owners gravitate toward heavier vehicles.

Standard Mileage Rate or Actual Expenses

Once the vehicle is in service, you deduct operating costs using one of two methods. The standard mileage rate for 2026 is 72.5 cents per business mile.⁷ Multiply that by your business miles for the year, and you’re done — no separate tracking of gas, insurance, or maintenance.

The actual expense method deducts the real cost of operating the vehicle — fuel, insurance, repairs, registration, depreciation, and loan interest — in proportion to business use. Drive 15,000 miles total with 10,000 for business, and you deduct two-thirds of your actual costs.²

The choice comes with a timing rule. If you want the standard mileage rate, you have to pick it in the first year the vehicle is available for business use. You can switch to actual expenses later, but not the other way around. And if you claim Section 179 or bonus depreciation on the vehicle, you’re locked into actual expenses for that vehicle from then on.

Documents and Insurance You Need at Purchase

Buying through a business takes more paperwork than a personal purchase. Bring the following before you visit a dealer or private seller:

Your Employer Identification Number, which dealerships and lenders use to verify the entity and run credit checks.⁸
A certified copy of your formation documents — Articles of Organization for an LLC, Articles of Incorporation for a corporation — proving the entity legally exists.
A corporate resolution or meeting minutes, signed by members or the board, authorizing the purchase and naming the person allowed to sign. Without it, a dealer or lender may question the signer’s authority.
Your business credit profile. Lenders often pull scores from agencies like Dun & Bradstreet, and a score of 80 or higher can help you get better loan terms or avoid a personal guarantee.
Government-issued personal ID for the authorized signer.

You also need commercial auto insurance in place before driving the vehicle off the lot. A standard personal policy generally does not cover a vehicle titled to a business, and the commercial policy has to be written in the exact legal name of the entity. Many insurers recommend at least $500,000 in liability coverage, with $1 million a common benchmark for businesses with higher exposure.

On the purchase agreement and registration forms, list the business as the buyer using its legal name and registered address. The authorized representative signs their own name followed by their title, such as “Jane Smith, Managing Member,” so the contract obligation falls on the entity rather than the individual.

Financing the Vehicle

Most small businesses finance vehicle purchases through commercial auto loans. These loans work like personal car loans, with the vehicle as collateral, but the lender evaluates the business’s creditworthiness rather than (or in addition to) yours. A business with an established credit history and strong scores may qualify on its own.

In practice, newer businesses usually have to sign a personal guarantee, agreeing to repay the loan with personal assets if the business defaults. Lenders generally look for a personal credit score of 670 or higher for favorable terms. A lower score doesn’t disqualify you, but expect higher rates or a larger down payment. As your business builds its own credit, refinancing or future loans without a personal guarantee become more realistic.

Pay from a business bank account, whether by business check or wire transfer. Mixing personal and business funds for the purchase blurs the same legal separation that personal use of the vehicle can undermine.

Keeping a Mileage Log

The IRS expects contemporaneous records, meaning trips logged at or near the time they happen, not reconstructed months later. For each business trip, note the date, destination, business purpose, and miles driven.³ Also record total miles for the year so you can calculate the business use percentage.

Personal trips don’t need the same detail — noting them as “personal” is enough. The goal is to document each business trip well enough that you could prove the connection under audit. GPS-based mileage apps are widely accepted, as long as you review and confirm the purpose of each trip. Even if you use the standard mileage rate, you still need records of time, place, and business purpose.

Personal Use of a Business Vehicle

If your business provides a vehicle to an employee — including yourself, if you’re on payroll — any personal driving is a taxable fringe benefit. The value of that personal use has to be added to the employee’s wages and reported on their W-2.⁹

The IRS allows three valuation methods:

The cents-per-mile rule: multiply the standard mileage rate (72.5 cents for 2026) by personal miles driven. Best when the vehicle is used mostly for business.
The annual lease value rule: look up the annual lease value on an IRS table based on the vehicle’s fair market value, then multiply by the personal-use percentage. This includes maintenance and insurance but not fuel.¹⁰
The commuting rule: value each one-way commute at $1.50, available only when the employer requires the employee to commute in the vehicle for legitimate business reasons and personal use beyond commuting is prohibited under a written policy.

Once you pick a valuation method for a particular vehicle, you generally have to keep using it for as long as that vehicle is available to employees. Failing to report personal use as income can bring penalties for both employer and employee if audited.

Leasing as an Alternative

Leasing through your business is worth considering if you prefer lower monthly payments or plan to swap vehicles every few years. With a lease, you deduct the business portion of each payment as an expense rather than claiming depreciation. Use the vehicle 75% for business, and you deduct 75% of each lease payment.

The trade-off: Section 179 and bonus depreciation don’t apply to leased vehicles because you don’t own them. For high-value leases, the IRS also requires an “inclusion amount” added to taxable income, which offsets part of the lease deduction. Leasing does sidestep the luxury automobile depreciation caps, since you’re deducting the actual lease cost rather than depreciating the vehicle. If you use the standard mileage rate on a leased vehicle, you’re committed to that method for the entire lease term. Buying gives you more flexibility and builds equity; leasing preserves cash and simplifies regular upgrades.

1
Office of the Law Revision Counsel. 26 USC 162 – Trade or Business Expenses
2
Internal Revenue Service. Topic No. 510, Business Use of Car
3
Internal Revenue Service. Publication 463 (2024), Travel, Gift, and Car Expenses
4
Office of the Law Revision Counsel. 26 USC 179 – Election to Expense Certain Depreciable Business Assets
5
Office of the Law Revision Counsel. 26 USC 280F – Limitation on Depreciation for Luxury Automobiles
6
Internal Revenue Service. Treasury, IRS Issue Guidance on the Additional First Year Depreciation Deduction Amended as Part of the One, Big, Beautiful Bill
7
Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents per Mile
8
Internal Revenue Service. Employer Identification Number
9
Internal Revenue Service. Publication 15-B (2026), Employers Tax Guide to Fringe Benefits
10
eCFR. 26 CFR 1.61-21 – Taxation of Fringe Benefits