A business vehicle may qualify for a first-year tax deduction, but buying a heavy SUV does not automatically let you deduct its full price. For tax years beginning in 2026, the federal Section 179 deduction for a vehicle subject to the heavy-SUV limit is capped at $32,000. Separate bonus-depreciation rules may allow a larger deduction on the remaining eligible business cost. Vehicle classification, acquisition timing, business use, and other tax limits still matter.
The phrase “Hummer loophole” is a nickname, not a separate tax benefit. The relevant expensing provision is Section 179, not Section 197. A write-off reduces taxable income; it does not reimburse the purchase price or make the vehicle free.
How Section 179 works for a business vehicle
Section 179 lets an eligible taxpayer elect to deduct qualifying purchased business property when it is placed in service rather than recover that cost entirely through depreciation over several years. Qualifying property can include certain new or used vehicles. A purchase from a related person may not qualify.
For a vehicle used for both business and personal driving, only the eligible business share of its cost enters the deduction calculation. You generally must use the vehicle more than 50% for qualified business purposes in the year it is placed in service to claim Section 179. Exactly 50% is not enough.
The overall federal Section 179 limit for tax years beginning in 2026 is $2,560,000. That limit is reduced dollar for dollar when total qualifying property placed in service exceeds $4,090,000. These are business-wide limits across qualifying assets, not an automatic deduction for each vehicle. Section 179 also has an active-business taxable-income limitation; amounts disallowed by that income limit can generally carry forward.
For historical comparison, the enacted limits for tax years beginning in 2025 were $2,500,000, with the phaseout beginning above $4,000,000 of qualifying property placed in service. Those are 2025 figures, not the 2026 limits.
Which vehicles face the heavy-SUV deduction cap?
The federal heavy-SUV rule generally covers four-wheeled vehicles primarily designed or used to carry passengers on public roads with a gross vehicle weight rating, or GVWR, over 6,000 pounds and no more than 14,000 pounds. GVWR is the manufacturer’s rated maximum loaded weight, not simply the vehicle’s curb weight. Confirm the rating for the exact vehicle and configuration before relying on a dealer’s deduction estimate
For vehicles subject to this rule, the Section 179 cap is $32,000 for tax years beginning in 2026. The historical cap for tax years beginning in 2025 was $31,300. These caps limit Section 179 expensing; they do not, by themselves, determine the vehicle’s total allowable depreciation deduction.
Certain vehicles are excluded from the SUV-specific cap because of their design. Examples include a qualifying pickup with a cargo area at least six feet long that is not readily accessible from the passenger compartment, and certain passenger or cargo vehicles meeting the IRS’s specific seating and body-design tests. Being excluded from the SUV cap does not remove the other deduction requirements.
Lighter passenger vehicles can face separate annual depreciation limits that apply to the combined Section 179, bonus-depreciation, and regular depreciation deductions. Weight alone is not a reliable guide to the available write-off, and a vehicle above the heavy-SUV weight range is not automatically fully deductible.
Section 179 versus bonus depreciation after the 2025 law change
Section 179 and bonus depreciation are different provisions. Section 179 is an election with annual dollar limits, a qualifying-property investment phaseout, and an active-business income limit. Bonus depreciation is a separate accelerated deduction for eligible property and is not subject to that same Section 179 income limit. Other loss and deduction limitations can still affect the tax result.
The federal law enacted in 2025 restored 100% bonus depreciation for qualifying property acquired and placed in service after January 19, 2025. That treatment can apply to eligible business vehicles acquired and placed in service in 2026, including qualifying used vehicles that meet the acquisition requirements. It is not limited to vehicles bought during 2025.
Timing deserves particular attention. A delivery in 2026 does not, by itself, establish eligibility for the restored 100% allowance. Earlier acquisitions and written binding contracts can fall under different transition rules. For ordinary qualifying property acquired before January 20, 2025, and placed in service during calendar 2025, the prior rules generally provided a 40% allowance, rather than the restored 100% allowance.
When both provisions apply, Section 179 is calculated first, followed by bonus depreciation on the remaining eligible basis, then regular depreciation if any basis remains. An eligible heavy SUV’s remaining business basis may qualify for bonus depreciation even after it reaches the Section 179 SUV cap. That is why the SUV cap is not necessarily the ceiling on its total first-year federal deduction. Section 179 is not a prerequisite for claiming bonus depreciation.
The largest immediate deduction is not always the best choice. Consider current income, future business use, state taxes, and whether an available election to spread deductions over time better fits the business’s circumstances.
An illustrative 2026 heavy-SUV purchase
Assume a calendar-year business buys an eligible heavy SUV from an unrelated seller and places it in service in 2026. Its tax basis is $80,000, and documented qualified business use is 75%. The business-use basis is therefore $60,000; the personal-use portion is not deductible.
Assume the acquisition meets the post-January 19, 2025 rules, sufficient active-business taxable income supports Section 179, and no other limits interfere. The business could elect a $32,000 Section 179 deduction and claim 100% bonus depreciation on the remaining $28,000 of eligible business basis. The total first-year federal deduction would be $60,000—not the full $80,000 vehicle cost.
This is a simplified illustration, not client data or a promised outcome. It is a deduction from income, not $60,000 of tax savings. California treatment must be calculated separately, and later changes in use or a sale can affect the result
Buying before year-end is not enough
A vehicle is placed in service when it is ready and available for its specific business use. Signing a purchase order, paying a deposit, or arranging financing does not necessarily satisfy that test
For a calendar-year taxpayer seeking a 2026 deduction, the vehicle must be placed in service by December 31, 2026. A vehicle that is not ready and available for its business use until 2027 does not qualify for a 2026 depreciation deduction merely because it was ordered or paid for in 2026.
Keep the purchase agreement, delivery records, and evidence of when the vehicle became available for business. If an order or binding contract crosses the January 19, 2025 acquisition cutoff, have a tax professional examine the contract before selecting the bonus-depreciation treatment.
Business mileage, commuting, and records
Driving between business locations, visiting customers, and making business deliveries can be deductible business transportation. Driving between home and a regular workplace is generally personal commuting, even if you discuss business during the trip or display a business logo on the vehicle. Qualifying home-office and temporary-work-location rules can change the analysis in specific circumstances
Most passenger-type business vehicles remain “listed property,” a tax category with special business-use and substantiation rules. A heavy SUV does not escape these rules just because it weighs more than 6,000 pounds. Business ownership or registration in an LLC’s name does not establish that every mile is business use.
Keep a timely mileage log showing the date, destination, business purpose, and miles for each business trip, along with total annual mileage. Retain invoices, proof of the vehicle’s cost and GVWR, operating receipts, and the prior depreciation schedule. Estimates prepared only at filing time are not a substitute for adequate substantiation.
For practical help organizing these records, read our guide to common tax mistakes business owners can avoid.
You cannot combine every vehicle deduction
Eligible taxpayers generally compare the standard mileage method with the actual-expense method. Section 179 and separately claimed depreciation belong to the actual-expense approach. You cannot claim the standard mileage rate and also take Section 179 or bonus depreciation for the same vehicle.
Method choices can affect future years, too. For an owned vehicle, choosing standard mileage in its first year of business use preserves certain later options. Claiming Section 179, bonus depreciation, or other disqualifying depreciation generally prevents later use of the standard mileage rate for that vehicle. Different consistency rules apply to leased vehicles.
Our overview of mileage tracking for self-employed drivers provides related background. Use the IRS rules for the applicable tax year when comparing methods; do not assume an older mileage rate applies to a current return.
California does not follow the federal write-off
For tax-year 2026 planning under California law in effect on November 2, 2026, California generally retains a $25,000 Section 179 limit, reduced when total qualifying property placed in service exceeds $200,000. That is an overall limit across qualifying assets, not a separate $25,000 allowance for each vehicle. California also does not allow federal Section 168(k) bonus depreciation.
These differences also applied to the historical 2025 state calculations described in the FTB’s 2025 depreciation instructions. Do not transfer a large federal vehicle deduction directly onto a California return.
A vehicle may therefore have different federal and California depreciation deductions and remaining tax bases. Maintain separate depreciation schedules, including any state carryforward. The applicable California form and depreciation method depend on the taxpayer and entity type
If an S corporation owns the vehicle, depreciation is also part of a broader entity-return calculation. Our introduction to Form 1120S for small businesses explains the return’s general purpose and record-preparation needs; the vehicle deduction itself still requires the applicable depreciation forms and limitations.
What happens if business use drops or you sell the vehicle?
A first-year deduction is not the end of the analysis. If listed-property qualified business use falls to 50% or less during the applicable recovery period, excess depreciation—including Section 179 and bonus depreciation—may have to be recaptured, meaning included back in taxable income.
Selling or trading the vehicle can also produce a taxable gain and depreciation recapture. Keep the purchase, mileage, and depreciation records after the initial deduction so the later transaction can be calculated correctly.
Frequently Asked Questions
Can I write off any SUV over 6,000 pounds?
No. You must confirm the exact vehicle’s classification and GVWR, qualifying acquisition, placed-in-service date, and business use. A passenger-type SUV over 6,000 pounds and no more than 14,000 pounds generally faces the heavy-SUV Section 179 cap. Bonus depreciation may apply separately, but personal use is not deductible.
Does exactly 50% business use qualify for Section 179?
No. The vehicle generally must be used more than 50% for qualified business purposes in the year it is placed in service. Listed property used 50% or less generally does not qualify for Section 179 or bonus depreciation and instead requires different depreciation treatment.
Can a used or financed vehicle qualify?
Potentially. Eligible used vehicles purchased from an unrelated seller can qualify, but the acquisition and prior-use requirements must be checked. Financing does not, by itself, prevent a deduction based on qualifying vehicle cost; you do not have to pay the full price in cash first. Do not deduct loan principal payments again as an operating expense after accounting for the vehicle’s basis and depreciation.
Do I have to buy and place the vehicle in service in the same year?
No. The deduction generally begins in the year the vehicle is placed in service, and the acquisition date must independently meet the rules for the deduction claimed. A year-end order that is not ready and available for business until the following year does not establish a current-year depreciation deduction.
Can I use standard mileage and also deduct the SUV purchase?
Not through a separate Section 179 or bonus-depreciation deduction. The standard mileage rate already includes a depreciation component, and those methods cannot be stacked. Compare the permitted methods before making a first-year election because the choice can limit future options.
Is California’s deduction the same as the federal deduction?
No. Under California law in effect on November 2, 2026, the state generally retains its $25,000 overall Section 179 limit and $200,000 qualifying-property phaseout threshold and does not allow federal bonus depreciation. Your federal and California deductions can differ substantially.
Review the tax result before buying
Start with the vehicle your business actually needs, then compare the after-tax cost—not just the advertised write-off. Robert Hall & Associates offers tax planning and advisory services for business owners.
To discuss a planned purchase, contact Robert Hall & Associates. Have the proposed purchase agreement, exact vehicle specifications and GVWR, expected business-use percentage, current income information, and existing depreciation schedules available. Those details provide a more useful starting point than a dealer’s general deduction estimate.
This article provides general educational information based on law in effect on November 2, 2026. It is not individualized tax or legal advice. Eligibility, elections, entity-level rules, and state treatment depend on your circumstances; consult a qualified tax professional before buying a vehicle or claiming a deduction.
