How to Depreciate a Business Vehicle in 2026: Limits and Methods

Vehicles get their own depreciation rulebook: dollar caps for cars, a special SUV limit, and a business-use test that can claw everything back. Here is the 2026 version.

The luxury auto caps

Passenger automobiles, which includes most cars and light trucks under 6,000 pounds, are 5-year MACRS property subject to annual dollar caps under Section 280F. For vehicles placed in service in 2026, the first-year cap is $20,300 with bonus depreciation and $12,300 without it. Later-year caps step down on a published schedule. A $70,000 sedan used 100 percent for business still only deducts $20,300 in year one; the rest dribbles out over the following years under the caps.

These caps apply to the depreciation deduction only. They do not limit the Section 179 election directly, but Section 179 on a passenger auto is itself capped by the same 280F limits, so the practical result is the same: no full first-year write-off for a regular car, no matter which provision you invoke.

The heavy SUV exception

Vehicles rated over 6,000 pounds gross vehicle weight are not passenger automobiles under Section 280F, so they escape the luxury caps. Congress then imposed a separate limit on sport utility vehicles between 6,001 and 14,000 pounds: the Section 179 deduction is capped at $32,000 for 2026 (Revenue Procedure 2025-32, inflation-adjusted from $31,300 in 2025).

The cap is less restrictive than it looks because bonus depreciation has no SUV cap. Take the common example: an $80,000 SUV used 100 percent for business. Elect $32,000 of Section 179, then apply 100 percent bonus depreciation to the remaining $48,000. First-year deduction: the full $80,000. The $32,000 cap only bites if you elect out of bonus depreciation or the vehicle does not qualify for it.

Pickups and cargo vans over 6,000 pounds that meet the design test (separate cargo area, no comfortable rear seating) face neither the luxury caps nor the SUV cap: full Section 179 plus full bonus on the balance, same arithmetic, no $32,000 constraint on the 179 piece.

The 50% business-use test

Every vehicle depreciation benefit requires more than 50 percent business use. At 50 percent or less, the vehicle must use straight-line depreciation over 5 years, and neither Section 179 nor bonus depreciation is available. Commuting, driving from home to a regular workplace, is never business use; driving between job sites, to clients, or to temporary work locations generally is.

Fail the test in a later year and the consequences are retroactive: you must recapture the excess of the depreciation you took over what straight line would have allowed, reporting it as ordinary income. A vehicle that drops from 80 percent to 40 percent business use in year three triggers recapture of the year-one and year-two excess. Track mileage contemporaneously; a log reconstructed at tax time is the classic audit failure.

Leased vehicles: the inclusion amount

Leasing does not escape the system. Business lease payments are deductible, but lessees of luxury vehicles must reduce the deduction by an inclusion amount published annually by the IRS, which roughly mirrors the depreciation caps owners face. For most 2026 leases of expensive vehicles, the inclusion amount is small relative to the payment, but it exists to keep leasing from beating buying on tax alone.

Bonus vs 179 vs regular MACRS for vehicles

For a qualifying heavy vehicle in 2026, the standard play is Section 179 up to the cap or your income limit, then 100 percent bonus on the remainder, wiping out the full business-use cost in year one. For a passenger car, take bonus to reach the $20,300 first-year cap and let the MACRS caps schedule the rest. Electing out of bonus for vehicles is rare but can make sense when you expect much higher income, and higher marginal rates, in future years and want to shift deductions forward.

Sources: IRS Publication 946; IRS Revenue Procedure 2025-32; IRS Publication 463 (travel, gift, car expenses). Data current as of October 2026. Not tax advice.

Frequently asked questions

What is the 2026 luxury auto depreciation limit?

For passenger vehicles placed in service in 2026, the first-year depreciation cap is $20,300 with bonus depreciation ($12,300 without), under Section 280F inflation adjustments.

Can I write off a heavy SUV in one year?

Often yes. SUVs between 6,001 and 14,000 pounds face a $32,000 Section 179 cap for 2026, but 100% bonus depreciation applies to the balance with no cap, so the full business-use cost is frequently deductible in year one.

What happens if business use drops below 50%?

You lose Section 179 and bonus eligibility, must switch to straight-line depreciation, and must recapture as ordinary income the excess depreciation taken in earlier years over straight line.

Is commuting deductible as business mileage?

No. Driving between home and a regular workplace is commuting and never counts as business use. Driving between job sites or to clients generally does.

Do lease payments get the same limits?

Lessees deduct business lease payments but must subtract the annual IRS lease inclusion amount, which keeps leasing roughly neutral with the depreciation caps owners face.