How Many Years Do You Depreciate a Car for Taxes?

How many years you depreciate a car for taxes depends on the vehicle and how you claim it. The IRS assigns automobiles to a five-year property class under MACRS, but the actual timeline runs anywhere from a single year to more than a decade. A moderately priced business car claimed with bonus depreciation can be written off in year one. A luxury sedan hits annual dollar caps that push full recovery past ten years. A heavy SUV over 6,000 pounds sidesteps those caps entirely. The five-year label is the starting point, not the answer.

The Five-Year MACRS Class

The IRS classifies automobiles and light general-purpose trucks as five-year property under the Modified Accelerated Cost Recovery System.1Internal Revenue Service. Publication 946 (2024), How To Depreciate Property That five-year label describes the recovery class, not a guarantee that your deductions finish in five calendar years.

Under the default half-year convention, the IRS treats the vehicle as placed in service at the midpoint of the year no matter the actual date. The partial first year pushes the tail end of depreciation into a sixth calendar year.2eCFR. 26 CFR 1.168(d)-1 – Applicable Conventions: Half-Year and Mid-Quarter Conventions Using the 200-percent declining balance method with that convention, the annual percentages are 20.00%, 32.00%, 19.20%, 11.52%, 11.52%, and 5.76%. So even the “simple” case runs six calendar years across six tax returns.

Those percentages assume 100 percent business use and no annual caps. For most passenger cars, the caps below take over long before the percentages do.

Section 280F: Why Most Cars Take Longer Than Five Years

Section 280F caps the annual depreciation you can claim on a passenger automobile, regardless of the vehicle’s actual cost or which method you use. For vehicles placed in service in 2026, the inflation-adjusted limits under Rev. Proc. 2026-15 are:3Internal Revenue Service. Rev. Proc. 2026-15 – Depreciation Limitations for Passenger Automobiles

With bonus depreciation:

  • Year 1: $20,300
  • Year 2: $19,800
  • Year 3: $11,900
  • Year 4 and beyond: $7,160 per year

Without bonus depreciation, the year-one figure drops to $12,300; the later years match.

Run the math on a $45,000 car used 100 percent for business, with bonus depreciation: $20,300 in year one, $19,800 in year two, and the remaining $4,900 in year three. Done in three years.

Now try a $90,000 car. The first three years cover $52,000 combined, leaving $38,000 of unrecovered basis. At $7,160 per year, that takes roughly six more years. Total timeline: about nine years. A $150,000 vehicle can take well over a decade.4Office of the Law Revision Counsel. 26 USC 280F – Limitation on Depreciation for Luxury Automobiles

The more expensive the car, the longer the tail. This is the single biggest reason the answer to “how many years” isn’t simply “five.”

Section 179 and Bonus Depreciation: One-Year Recovery

Two provisions can compress the timeline to a single year. Section 179 lets you deduct the full cost of a business vehicle in the year it’s placed in service, up to $2,560,000 for 2026, with the phase-out beginning at $4,090,000 in total qualifying property.5Office of the Law Revision Counsel. 26 USC 179 – Election To Expense Certain Depreciable Business Assets Section 179 has one catch: the deduction can’t exceed your taxable income from business activity. If the business nets $40,000 and the car costs $50,000, Section 179 covers only $40,000.

Bonus depreciation under Section 168(k) works alongside or instead of Section 179. The One, Big, Beautiful Bill Act restored 100-percent bonus depreciation for qualifying property placed in service after January 19, 2025.6Internal Revenue Service. One, Big, Beautiful Bill Provisions For a vehicle placed in service in 2026, bonus depreciation lets you deduct the full cost immediately without the taxable-income limitation Section 179 imposes.7Office of the Law Revision Counsel. 26 USC 168 – Accelerated Cost Recovery System

Both provisions require more than 50 percent business use. And for a passenger automobile, both still run into the Section 280F caps. A one-year write-off using bonus depreciation is only a real one-year write-off when the vehicle either costs less than the first-year cap or isn’t classified as a passenger automobile in the first place.

Heavy Vehicles Over 6,000 Pounds

Vehicles with a gross vehicle weight rating above 6,000 pounds aren’t classified as passenger automobiles for depreciation purposes, so the Section 280F caps don’t apply.8Internal Revenue Service. Publication 463 (2024), Travel, Gift, and Car Expenses This is why full-size SUVs, pickups, and cargo vans are popular business purchases. A qualifying heavy SUV with 100-percent bonus depreciation can be fully written off in year one.

One limit still applies. For heavy SUVs designed primarily to carry passengers (as distinct from cargo vans and heavy pickups), the Section 179 deduction is capped. That cap is around $32,000 for 2026, adjusted annually for inflation. Any cost above the Section 179 cap can still be recovered through bonus depreciation and regular MACRS, so if you’re already taking bonus depreciation at 100 percent, the practical effect is minor.

Vehicles over 14,000 pounds GVWR fall outside MACRS vehicle rules and follow standard equipment depreciation. Ambulances, hearses, and certain clearly marked emergency vehicles escape the passenger automobile classification regardless of weight.

The 50-Percent Business Use Threshold

Business use above 50 percent is the gate to every accelerated method. Drop below that threshold in the first year and you lose Section 179, bonus depreciation, and the 200-percent declining balance method. You’re limited to straight-line depreciation over five years under the Alternative Depreciation System.8Internal Revenue Service. Publication 463 (2024), Travel, Gift, and Car Expenses

If business use drops below 50 percent in a later year after you’ve claimed accelerated deductions, you must recapture the excess. The difference between what you actually deducted and what straight-line would have produced is reported as ordinary income on Form 4797.1Internal Revenue Service. Publication 946 (2024), How To Depreciate Property After that drop, you use straight-line for all remaining years of that vehicle’s depreciation, even if business use later climbs back above 50 percent.

You can also elect ADS voluntarily to spread deductions evenly, and some taxpayers do when they don’t need large early write-offs. The election is irrevocable for that vehicle.

Timelines by Vehicle Type and Cost

Putting the rules together, the number of years to fully depreciate a car breaks down like this:

  • Moderately priced car with bonus depreciation, under the first-year 280F cap: effectively one year.
  • Car in the $40,000–$60,000 range with bonus depreciation: roughly two to four years, as 280F caps stretch the deductions past year one but not dramatically.
  • Luxury car over $75,000: seven to twelve years or more, because the $7,160 annual cap in year four and beyond creates a long tail.
  • Heavy SUV, pickup, or van over 6,000 lbs with 100-percent bonus depreciation: one year.
  • Any vehicle with 50 percent or less business use: five years of straight-line, no Section 179, no bonus depreciation.
  • Any passenger car depreciated under regular MACRS with no accelerated methods and no cap interference: six calendar years, because the half-year convention pushes a final 5.76 percent into year six.

The five-year MACRS class is the label. Section 280F is what actually determines how long depreciation lasts for most passenger cars. Running the numbers with the 2026 caps before you buy lets you project the deduction schedule you’ll actually get.