Whether to lease or buy a car for business comes down to three questions: how many miles you drive, how much cash you want to keep on hand, and whether the vehicle is heavy enough to escape the IRS depreciation caps on passenger cars. Buying builds equity and can produce a huge first-year deduction on heavy vehicles. Leasing keeps monthly payments and upfront cash lower, with simpler, more predictable write-offs. Neither wins across the board.
What You Can Deduct When You Buy
Purchasing opens up two first-year deductions. Section 179 lets you expense the full purchase price of qualifying equipment in the year you put it into service, up to $2,560,000 for tax year 2026, with phase-out beginning once total qualifying purchases exceed $4,090,000.1Office of the Law Revision Counsel. 26 USC 179 – Election To Expense Certain Depreciable Business Assets
On top of that, bonus depreciation under Section 168(k) allows a 100% first-year deduction on qualifying vehicles. The One Big Beautiful Bill Act permanently restored full bonus depreciation for property acquired after January 19, 2025, ending the phase-down that had been shrinking the percentage each year since 2023.2Internal Revenue Service. Treasury, IRS Issue Guidance on the Additional First Year Depreciation Deduction Amended as Part of the One Big Beautiful Bill You can use Section 179, bonus depreciation, or both on the same vehicle.
The catch: passenger cars have annual caps that limit what you actually get to deduct no matter which method you use.
What You Can Deduct When You Lease
Lease the vehicle instead, and you deduct the business-use portion of each monthly payment as an operating expense. No depreciation schedule, no complex elections, deductions spread evenly across the lease term. For a business that prefers predictable write-offs over a large first-year hit, that simplicity has real value.
There is one guardrail. Lease a passenger car with a fair market value above $62,000 and you must reduce your lease deduction by a small “inclusion amount” each year, keeping lease write-offs in line with what owners can claim through capped depreciation. The IRS publishes updated tables annually.3Internal Revenue Service. Publication 463 (2025), Travel, Gift, and Car Expenses Below that threshold, the inclusion amount is zero.
The Passenger Car Depreciation Caps
This is where the buy-versus-lease tax comparison gets real. Even with Section 179 and bonus depreciation in play, Congress caps the annual depreciation you can claim on a passenger automobile, defined as a four-wheeled vehicle rated at 6,000 pounds gross vehicle weight or less.4Office of the Law Revision Counsel. 26 USC 280F – Limitation on Depreciation for Luxury Automobiles That covers most sedans, smaller crossovers, and light trucks.
For a passenger automobile placed in service in 2026 with bonus depreciation, the maximum deductions are:
- Year 1: $20,300
- Year 2: $19,800
- Year 3: $11,900
- Year 4 and after: $7,160 per year until fully depreciated
Without bonus depreciation, the first-year cap drops to $12,300. So even if you buy a $55,000 sedan and elect Section 179, you cannot deduct more than $20,300 in year one, and the rest stretches out at the capped amounts. That is the single biggest reason the tax edge of buying is narrower than many business owners expect on ordinary passenger cars. In practical terms, the deduction difference between leasing and buying a sub-$62,000 sedan is often modest.
The Heavy Vehicle Exception That Changes the Math
Vehicles rated above 6,000 pounds gross vehicle weight are not subject to the passenger automobile caps, which creates a well-known planning opportunity. Heavy pickup trucks, cargo vans, and full-size work vehicles over that threshold can qualify for the full Section 179 deduction and 100% bonus depreciation with no annual cap, potentially letting you write off the entire cost in year one.3Internal Revenue Service. Publication 463 (2025), Travel, Gift, and Car Expenses
Heavy SUVs get a partial break. For a vehicle between 6,000 and 14,000 pounds, Section 179 is capped at $32,000 for 2026, but bonus depreciation still applies to the remaining cost. The combination often writes off a $70,000 or $80,000 SUV entirely in the first year.
When the vehicle in question is heavy enough to qualify, buying almost always wins on taxes. Leasing cannot replicate that kind of front-loaded deduction.
Business Use Has to Stay Above 50%
Every accelerated deduction above depends on using the vehicle more than 50% for business in the year you place it in service. At 50% or less, Section 179 and bonus depreciation are off the table, and you are stuck with straight-line depreciation over a longer recovery period.3Internal Revenue Service. Publication 463 (2025), Travel, Gift, and Car Expenses
If business use later drops below 50% after you have already claimed accelerated deductions, you have to recapture the excess as ordinary income on that year’s return.5Internal Revenue Service. Publication 946, How To Depreciate Property The IRS expects a contemporaneous mileage log, kept at or near the time of each trip, with date, mileage, destination, and purpose.6IRS. Instructions for Form 2106 (2025) – Employee Business Expenses
Upfront Cash and Monthly Payments
Buying asks for more cash on day one. Lenders typically want 10% to 20% down, plus sales tax on the full price, title, and registration. Monthly loan payments run higher because you are financing the whole vehicle plus interest.
Leasing front-loads less. A typical drive-off includes the first month’s payment, sometimes a refundable security deposit, and an acquisition fee that generally runs $600 to $1,000. Monthly payments are lower because you are only paying for expected depreciation across the lease term, not the full value of the car. If working capital matters more than long-term equity, that cash flow difference can decide the question.
Mileage, Flexibility, and the End of the Term
Most lease agreements cap annual mileage at 12,000 or 15,000 miles, with some options running from 7,500 to 19,500. Every mile over the limit triggers a per-mile charge, typically $0.10 to $0.25. A sales team that runs 5,000 miles over a three-year lease’s annual cap would owe $1,500 to $3,750 at turn-in, due all at once and not deductible as a separate business expense.
Ownership removes the odometer anxiety. You can drive as much as you need. Heavy use lowers eventual resale value, but that happens gradually and on your schedule, not as a bill at lease-end.
Returning a leased car also carries a disposition fee of roughly $400, plus charges for any damage beyond normal wear. You can usually waive the disposition fee by leasing or buying again from the same company. Walking away early is more painful: the termination charge is typically the gap between the remaining lease balance and the vehicle’s current market value, and that gap is widest early in the lease when depreciation hits hardest.7Federal Reserve Board. Vehicle Leasing – Up-Front, Ongoing, and End-of-Lease Costs A business whose vehicle needs might change should factor that penalty in before signing.
When you own, selling is straightforward. Private sale, dealer trade-in, or keep driving: the proceeds and the timing are yours.
Insurance and Balance Sheet Effects
Leasing companies own the vehicle and set the insurance terms. Expect liability limits above state minimums, mandatory comprehensive and collision coverage, and often gap insurance to cover the difference between an insurer’s payout and the remaining lease balance if the car is totaled. Those requirements can add several hundred dollars a year compared to insuring a vehicle you own outright, where you set your own coverage levels once any loan is paid off.
On the books, a purchased vehicle shows up as a depreciable asset and the loan as a liability. You build equity as you pay down the loan, and once it is paid off you have a vehicle that can serve as collateral or keep operating at near-zero monthly cost. A lease adds no owned asset and no large auto loan, which keeps the debt-to-equity ratio cleaner. For a business trying to qualify for other financing, a lighter balance sheet can be an advantage even though no equity is building in the vehicle itself.
When Leasing Is the Better Call
Leasing tends to win when the business drives moderate, predictable miles, prefers lower monthly payments, wants to rotate into a new vehicle every two or three years, and does not need a large first-year deduction. Service businesses that want to project a current, professional image, like real estate agencies or consulting firms, often lean this way for the cash flow alone. And because the passenger car depreciation caps shrink the ownership tax advantage on lighter vehicles, the gap between leasing and buying a sub-$62,000 sedan is often small enough that lifestyle factors decide it.
When Buying Is the Better Call
Buying pulls ahead on heavy miles, long holding periods of five years or more, and any vehicle that qualifies for the heavy vehicle exception. A construction company buying a $75,000 truck rated above 6,000 pounds can write off the full cost in year one, build equity as the loan pays down, and drive unlimited miles with no overage fees. A lease cannot match that. Buying also wins for any business that would rather not have someone else dictating mileage, insurance, or end-of-term inspections.
Run the numbers on the specific vehicle you have in mind before deciding. For a heavy work truck, the tax deduction alone usually settles it. For an ordinary passenger car, the choice is closer than it looks, and cash flow, mileage patterns, and how long you plan to keep the vehicle will matter more than the tax code.