Yes — the Rivian R1T and R1S both qualify for the Section 179 deduction because each carries a gross vehicle weight rating well above the 6,000-pound threshold that federal tax law uses to unlock heavy-vehicle treatment. What trips up most buyers is the size of the deduction. Both Rivians are classified as SUVs for tax purposes, which caps the Section 179 write-off at $32,000 for the 2026 tax year.1Internal Revenue Service. Revenue Procedure 2025-32 The rest of the purchase price can still be recovered in year one through 100-percent bonus depreciation, so a business owner using the vehicle entirely for work can write off the full cost in the first year.
Why Both Rivians Clear the Weight Threshold
Section 179 lets a business deduct the cost of qualifying equipment in the year it goes into service rather than spreading it across years of depreciation.2Office of the Law Revision Counsel. 26 USC 179 – Election to Expense Certain Depreciable Business Assets For vehicles, the size of the deduction turns on gross vehicle weight rating (GVWR), the maximum operating weight assigned by the manufacturer and printed on the safety certification label inside the driver-side door jamb.
Vehicles at or below 6,000 pounds GVWR are treated as passenger automobiles and face tight annual depreciation caps under Section 280F. Above 6,000 pounds, those restrictive limits fall away and a much larger first-year write-off becomes available.3Internal Revenue Service. Publication 463, Travel, Gift, and Car Expenses
Rivian’s battery packs and reinforced frames push both models comfortably past that line. The 2026 R1T has a GVWR of roughly 8,532 pounds in its base dual-motor configuration, with quad-motor and Max battery builds weighing more. The R1S has a comparable rating that also exceeds 8,000 pounds across configurations. Because GVWR varies by trim, battery, and motor choice, confirm the number on the door-jamb label of your specific vehicle before relying on any published figure.
The $32,000 SUV Cap Applies to the R1T and R1S
Clearing 6,000 pounds does not mean you get the full Section 179 dollar limit. A separate cap applies to any four-wheeled passenger vehicle rated between 6,000 and 14,000 pounds GVWR. For 2026, that cap is $32,000.1Internal Revenue Service. Revenue Procedure 2025-32 Both the R1T and R1S sit inside that weight band, so neither can generate a Section 179 deduction above $32,000, regardless of purchase price.
Some tax guides suggest pickup trucks escape the SUV cap. There is an exception, but the R1T does not meet it. The IRS carves out vehicles with a cargo bed at least six feet in interior length that is not accessible directly from the passenger compartment.3Internal Revenue Service. Publication 463, Travel, Gift, and Car Expenses The R1T’s bed measures about 54 inches with the tailgate closed, roughly 4.5 feet. Dropping the tailgate extends the usable floor to about seven feet, but the IRS measures interior bed length with the tailgate in its standard position. The R1T is therefore treated the same as the R1S.
The other two exceptions to the SUV cap, for vehicles seating more than nine passengers behind the driver and for enclosed work vehicles with no rear seating, do not fit any current Rivian either.3Internal Revenue Service. Publication 463, Travel, Gift, and Car Expenses
Stacking Bonus Depreciation on Top of Section 179
The $32,000 ceiling limits only the Section 179 slice of the deduction. After electing that amount, you can apply bonus depreciation to what remains of the basis. Under the One, Big, Beautiful Bill signed in 2025, 100-percent bonus depreciation is permanent for qualifying property acquired after January 19, 2025.4Internal Revenue Service. Treasury, IRS Issue Guidance on the Additional First Year Depreciation Deduction Amended as Part of the One, Big, Beautiful Bill Because vehicles over 6,000 pounds GVWR sit outside the Section 280F annual caps, bonus depreciation can absorb the full remaining basis.
For an $85,000 Rivian placed in service in 2026 with 100-percent business use, the first-year math looks like this:
- Section 179 deduction: $32,000 (the SUV cap)
- Remaining basis: $53,000
- 100-percent bonus depreciation: $53,000
- Total first-year write-off: $85,000
Drop business use to 80 percent and every component scales down with it; the total first-year deduction in the same example becomes $68,000. Two ceilings sit above all of this. The combined Section 179 deduction for all equipment placed in service in 2026 cannot exceed $2,560,000, and the limit phases out dollar-for-dollar once total qualifying purchases pass $4,090,000.1Internal Revenue Service. Revenue Procedure 2025-32 The Section 179 deduction also cannot exceed your taxable business income for the year; anything over that amount carries forward.2Office of the Law Revision Counsel. 26 USC 179 – Election to Expense Certain Depreciable Business Assets
Business Use and Recordkeeping
The Rivian must be used for business more than 50 percent of the time to be eligible for any Section 179 deduction.2Office of the Law Revision Counsel. 26 USC 179 – Election to Expense Certain Depreciable Business Assets Between 50 and 100 percent, the deduction scales with the business-use percentage. At or below 50 percent, Section 179 is off the table entirely for that year.
The IRS expects contemporaneous records. Keep a mileage log with the date, destination, business purpose, and miles for each trip. Commuting between home and a regular office does not count as business use. A sole proprietor does not need the vehicle titled in a business name, but the vehicle must be used in an income-generating activity. For an LLC or S-corp, titling in the business name simplifies the file if the return is examined.
Purchase Versus Lease
How you pay for the Rivian decides whether Section 179 is available. A loan or a capital lease (sometimes marketed as an equipment finance agreement) is treated as a purchase, and you can claim Section 179 on the full price in the year the vehicle is placed in service, even with a balance still outstanding.5Internal Revenue Service. Instructions for Form 4562
An operating lease is different. The leasing company keeps ownership, so Section 179 and depreciation do not apply; you deduct the lease payments as an ordinary business expense instead. If the tax deduction is what you want, confirm before signing whether your agreement is structured as a capital or operating lease.
What Happens if Business Use Drops Later
Section 179 comes with a clawback. If business use falls to 50 percent or below at any point during the vehicle’s five-year recovery period, you have to recapture part of the deduction, adding income back on that year’s return.6Internal Revenue Service. Publication 946, How To Depreciate Property The recapture amount is the difference between the Section 179 deduction originally claimed and the depreciation that would have been allowed under standard rates over the same period.
Vehicles are listed property, so the IRS applies the listed-property recapture rules rather than the general formula.6Internal Revenue Service. Publication 946, How To Depreciate Property Recapture is reported as ordinary income on Part IV of Form 4797. In practical terms, if you expect the Rivian to shift to mostly personal use within five years, part of the upfront savings will reverse.
Filing the Deduction and Timing the Purchase
The Section 179 election is made on IRS Form 4562, filed with your annual return.7Internal Revenue Service. About Form 4562, Depreciation and Amortization Part I is where you list the Rivian’s cost and the amount you elect to expense; Part V covers listed property and asks for your business-use percentage. Sole proprietors attach Form 4562 to Schedule C; S-corps and partnerships file it with Form 1120-S or 1065.
The vehicle must be placed in service, meaning available and ready for business use rather than merely ordered, before December 31 of the tax year for which you want the deduction.2Office of the Law Revision Counsel. 26 USC 179 – Election to Expense Certain Depreciable Business Assets Given Rivian’s delivery windows, order early enough to take delivery before year-end. Hold onto the purchase contract, proof of payment, VIN, and mileage logs; because recapture can apply throughout the five-year recovery period, keeping records that long is safer than the standard three.8Internal Revenue Service. How Long Should I Keep Records
Two Limits Worth Knowing Before You Buy
The Section 45W commercial clean vehicle credit, which paid up to $7,500 for qualifying business EVs under 14,000 pounds GVWR, is no longer available for vehicles acquired after September 30, 2025.9Internal Revenue Service. Commercial Clean Vehicle Credit A 2026 Rivian purchase cannot stack that credit on top of Section 179. Section 179 and bonus depreciation are the federal tools you have left.
State conformity is the other gap. Some states cap their own Section 179 deduction well below the federal figure, in certain cases as low as $25,000, while others match the federal number. Check your state’s rules before assuming the federal write-off carries through; a deduction that zeroes out your federal liability may still leave a meaningful state bill.