Section 179 Deduction 2026: Updated Vehicle Limits for Small Business

The 2026 Section 179 limits at a glance

For tax year 2026, the IRS set the Section 179 deduction limit at $1,220,000 on up to $3,050,000 of qualifying equipment purchases, with the deduction phasing out dollar-for-dollar above that threshold. This is an inflation-adjusted increase from 2025's $1,160,000 limit. For vehicles, the rules split into three categories. Passenger vehicles (cars under 6,000 lbs GVWR) are subject to strict annual depreciation caps: $12,260 for year 1, $19,760 for year 2, $11,900 for year 3, and $7,116 for year 4 and beyond. SUVs and trucks between 6,000 and 14,000 lbs GVWR get a higher Section 179 cap of $31,300 for 2026, up from $30,500 in 2025. Vehicles over 14,000 lbs GVWR are exempt from the annual caps and can take the full Section 179 deduction up to the $1,220,000 overall limit. Use our <a href="/calculators/section-179/">Section 179 calculator</a> to model your deduction.

Which vehicles qualify for the full SUV deduction

The $31,300 SUV deduction applies to vehicles with a GVWR between 6,000 and 14,000 pounds that meet the IRS definition of an SUV: built on a truck chassis, with at least 4 wheels, primarily for carrying passengers on public roads, and not more than 75% used for off-road. Qualifying 2026 models include most full-size SUVs: Chevy Suburban and Tahoe, Ford Expedition, GMC Yukon, Nissan Armada, Toyota Sequoia, and luxury equivalents like the Cadillac Escalade, Lincoln Navigator, and Lexus LX. Midsize SUVs like the Jeep Grand Cherokee, Ford Explorer, and Toyota 4Runner may also qualify if their GVWR exceeds 6,000 lbs. The GVWR is on the driver's door jamb sticker, not the curb weight. Vehicles under 6,000 lbs GVWR, including most crossovers and sedans, fall under the much lower passenger vehicle caps. Check the GVWR carefully before purchasing for tax purposes.

Bonus depreciation phase-down in 2026

Bonus depreciation, which allows first-year expensing of a percentage of business vehicle cost beyond Section 179, continues its scheduled phase-down in 2026. The bonus rate is 40% for 2026, down from 60% in 2025, 80% in 2024, and 100% in 2022-2023. The phase-down is 20 percentage points per year, reaching 20% in 2027 and 0% in 2028 unless Congress extends it. For a $70,000 qualifying SUV used 100% for business in 2026, you can combine Section 179 ($31,300) plus 40% bonus depreciation on the remaining $38,700 ($15,480) plus regular depreciation, for a total first-year deduction of roughly $50,000-53,000 depending on the depreciation method. This is significantly less than the 2022-2023 era when 100% bonus depreciation allowed near-full first-year expensing. The shrinking bonus makes Section 179 more valuable by comparison, because Section 179 is not phasing down.

The 50% business use rule and documentation

Section 179 requires more than 50% business use of the vehicle, and the deduction must be recaptured if business use drops below 50% in later years. This is the most common audit trigger for vehicle Section 179 claims. Proper documentation is essential: maintain a mileage log (paper or app-based) recording the date, starting and ending odometer, destination, business purpose, and miles for each trip. The IRS accepts a contemporaneous log more readily than a reconstructed one. Mixed-use vehicles (personal and business) must prorate the deduction by business-use percentage. A $70,000 SUV used 70% for business qualifies for 70% of the Section 179 cap ($21,910) and 70% of bonus depreciation. If business use drops to 40% in year 3, you must recapture the unclaimed portion as ordinary income. The 50% rule is strict and non-negotiable.

Section 179 vs leasing: which is better for business vehicles

Businesses can claim Section 179 on purchased vehicles but not on leased ones. For leases, the equivalent deduction is the lease inclusion amount, which is much smaller. The decision between buying and leasing for tax purposes depends on cash flow, vehicle type, and business use patterns. Buying with Section 179 front-loads the deduction in year 1, which is valuable if you have high current-year income to offset. Leasing spreads the deduction evenly over the lease term and may be preferable if you want lower monthly payments and vehicle turnover every 3 years. For heavy trucks and vans (over 14,000 lbs GVWR) used 100% for business, buying with Section 179 is almost always better tax-wise, because the full purchase price is deductible up to the $1,220,000 limit. For passenger cars under 6,000 lbs, the annual caps make the buy-vs-lease tax difference small. Compare both scenarios with our <a href="/calculators/section-179/">Section 179 calculator</a>.

How to claim Section 179 for 2026

To claim Section 179 for tax year 2026, the vehicle must be purchased and placed in service (not just ordered) by December 31, 2026. File Form 4562 with your business tax return (Schedule C for sole proprietors, Form 1120 for corporations, Form 1065 for partnerships). On Part I of Form 4562, list the vehicle in the Section 179 property section, specifying the cost and business-use percentage. For vehicles subject to the annual caps (passenger cars under 6,000 lbs), also complete Part V for listed property. Keep the purchase invoice, financing documents, and mileage log as substantiation. If you finance the vehicle, you can still claim the full Section 179 deduction based on the total purchase price, not just the down payment, but the deduction cannot exceed your business income for the year (unused amounts carry forward). Consult a CPA to ensure you maximize the deduction while staying within the limits.

Frequently Asked Questions