The Commercial §45W EV Credit
"No income cap. No MSRP cap. Up to $40,000 on a single truck. And the lease loophole that turned this into a discount for every renter, not just every fleet owner."
The 60-second pitch
The Commercial Clean Vehicle Credit (§45W) is the business-side twin of §30D — but it shed all the consumer rules. No income cap. No MSRP cap. No critical-minerals/battery-components requirement. No final-assembly-in-North-America rule. Just: business buys a qualifying clean vehicle, gets a credit equal to the lesser of (a) 30% of basis (15% if the vehicle has a gas engine, i.e., PHEV) or (b) the incremental cost vs. an equivalent ICE vehicle — capped at $7,500 for vehicles under 14,000 lbs GVWR and $40,000 for vehicles 14,000 lbs or more.
The famous lease loophole. A leased vehicle is treated as a sale to the lessor (the dealer or finance company). The lessor — a business — claims §45W. The lessor then has full discretion to pass the savings to the lessee in the form of a lower capitalized cost, a lower money factor, or just a cash rebate. This is how every consumer who leased an EV in 2023–2025 effectively got the credit even when their AGI was too high to qualify for §30D. No MSRP cap meant the loophole worked on $100K Rivians and $130K Hummers EVs that would have been ineligible for the consumer credit.
The OBBBA reality. Like §30D, the §45W credit terminates for vehicles acquired after September 30, 2025. The lease loophole closed with it. Vehicles acquired under a written binding contract with payment made on or before that date are grandfathered.
Real-world example — Heavy-duty win
The setup. Carlos runs Sun Valley Concrete, an S-corp with $1.6M revenue. He needs a Class 7 ready-mix truck. In May 2025, he buys a Mack MD Electric ready-mix tractor for $385,000. GVWR: 33,000 lbs. Battery: 376 kWh. He compares against the equivalent diesel Mack MD at $215,000 — incremental cost = $170,000.
The credit. 30% × $385,000 = $115,500. Incremental cost = $170,000. The lesser of these is $115,500 — but the heavy-duty cap is $40,000. He gets $40,000. Refundable against tax liability via direct pay (he's not tax-exempt, so this flows through the S-corp K-1 to him personally).
Plus depreciation. The truck qualifies for §168(k) 100% bonus depreciation (restored permanently under OBBBA for property placed in service after Jan 19, 2025). Basis must be reduced by the §45W credit ($385K - $40K = $345K). Year-1 depreciation: $345,000. At a 32% combined federal+AZ marginal rate, tax savings = $110,400.
Real-world example — Lease loophole
The setup. Tanya earns $385K W-2 — well over the $300K MFJ cap for §30D. She wants a Ford F-150 Lightning Platinum at $74,995. As a personal buyer, she's locked out of the consumer credit by her income.
The lease move. Tanya leases the F-150 Lightning through Ford Credit in June 2025. Ford Credit (a business lessor) buys the vehicle and claims §45W. The truck is < 14,000 lbs GVWR, so the cap is $7,500. Ford Credit's incremental cost calculation comfortably supports the full $7,500.
The pass-through. Ford Credit reduces the cap cost of Tanya's 36-month lease by $7,500. At her $75K MSRP, the residual is roughly 50% ($37,500); reducing the cap cost from $75K to $67.5K cuts her monthly payment by about $208/month over 36 months = $7,488 in lease savings. She didn't fill out a single tax form. She drove away with the credit baked into her payment.
The OBBBA caveat. If Tanya's lease was signed/delivered on or before Sep 30, 2025, the pass-through is locked in for the life of the lease. Lease an EV on Oct 1, 2025 or after — no §45W credit, no pass-through, no monthly savings.
The step-by-step checklist
- Confirm business use. §45W requires the vehicle be used in a trade or business. Mixed-use is fine, but the credit is allocated to business-use percentage if < 100%.
- Confirm GVWR class. Under 14,000 lbs = $7,500 cap. 14,000 lbs or more = $40,000 cap. Check the door-jamb sticker, not the marketing.
- Compute the incremental cost. For each clean vehicle, Treasury publishes a safe-harbor incremental cost or you compute it directly (Clean Vehicle Manufacturer MSRP – equivalent ICE Manufacturer MSRP).
- Compute the credit as the lesser of: (a) 30% of basis (15% for plug-in hybrids), (b) incremental cost, or (c) the GVWR cap.
- Acquisition date matters post-OBBBA. Vehicles acquired (signed binding contract + payment made) on or before Sep 30, 2025 are eligible. Acquired Oct 1+ = no credit, even for an existing fleet upgrade.
- For lease pass-throughs: negotiate the pass-through in writing on the lease addendum. The lessor isn't obligated to share — competitive markets typically pass 90-100% through.
- Reduce depreciable basis by the credit (§50(c)(3) treatment applies). If you claim $40K of §45W on a $385K truck, your depreciable basis is $345K — not $385K.
- Stack with 100% bonus depreciation. Vehicles > 6,000 lbs GVWR escape the §280F passenger-auto cap and can be fully bonused. Most light-duty EV trucks (Lightning, Rivian R1T, Hummer EV, Silverado EV) clear 6,000 lbs.
- File Form 8936 with the business return. Schedule A (entity-level credit) + Schedule B (transferred credits). Pass-through entities pass the credit to owners via K-1.
- Don't double-dip. A vehicle can't generate both §30D and §45W. If business use is < 50%, you may still elect §30D (or vice versa) — model it both ways.
- Maintain a written allocation log for mixed-use vehicles. Mileage, dates, business purpose. The IRS will challenge the percentage.
- If tax-exempt, use direct pay (§6417). Schools, governments, non-profits with no income tax liability can receive the §45W credit as a Treasury payment. Election made on Form 990-T (or equivalent).
IRS code & authority
- §45W Commercial Clean Vehicle Credit — credit is lesser of (a) 30%/15% of basis or (b) incremental cost vs. ICE, capped at $7,500 / $40,000. OBBBA termination: credit disallowed for vehicles acquired after Sep 30, 2025.
- §45W(c) Definition of "qualified commercial clean vehicle" — battery threshold and powertrain rules.
- §45W(d)(2) Incremental cost computation rules.
- §50(c)(3) Depreciable basis is reduced by the credit claimed.
- §280F(d)(7) Passenger automobile depreciation caps — vehicles > 6,000 lbs GVWR are exempt.
- §6417 Direct pay — applies to tax-exempt entities claiming §45W.
- §6418 Transferability — §45W can be sold for cash on the credit market (preserved for pre-cutoff vehicles).
- Form 8936 Schedules A & B — commercial clean vehicle credit and transfer/election form.
- Notice 2023-9 Incremental cost safe-harbor — Treasury determined certain vehicle classes meet the cap regardless of computed incremental cost.
- IRS Fact Sheet FS-2025-19 OBBBA modifications to §30C, §30D, §45L, §45W, §179D, §25C, §25D, §25E.
Audit risk flags
- Business-use percentage padding. Claiming 100% business use on a vehicle that's clearly the owner's daily driver. Defense: Mileage log, separate personal vehicle, no commuting miles claimed as business.
- Incremental cost overstated. Pretending the ICE comparable is a stripped-down base trim to inflate the gap. Defense: Use Treasury's published safe-harbor tables when available; for one-off computations, match trim level and feature set.
- Heavy-duty GVWR claimed without certification. The $40K cap requires GVWR ≥ 14,000 lbs. Defense: Manufacturer's certification or door-jamb GVWR sticker.
- Acquisition date backdating. The OBBBA Sep 30, 2025 cliff has prompted some dealers to "find" contracts dated in September. Defense: Match the acquisition date to actual payment timing and delivery records.
- Lease pass-through not documented. Lessees claim the credit informally without an addendum or rebate. Defense: The pass-through is the lessor's, not the lessee's. The lessee never claims §45W. Lessee benefit shows as lease price reduction.
- Failing basis reduction. Forgetting that depreciable basis must be reduced by the §45W credit. Defense: Workpaper the basis adjustment in year 1.
- Plug-in hybrid (PHEV) at the wrong rate. PHEVs get 15% of basis, not 30%. Defense: Confirm full-EV vs PHEV powertrain on the vehicle spec sheet.
- Section 179 stacked incorrectly with §45W. §179 expense + §45W requires careful basis sequencing. Defense: Apply §45W first, reduce basis, then §179, then bonus.
When NOT to do this
- You're shopping for a business EV after Oct 1, 2025. The credit is dead. The OBBBA grandfather only covers pre-cutoff binding contracts with payments made.
- You have negligible business use. < 50% business use makes §45W weaker than §30D (when §30D was alive). For 2025 acquisitions, run both and pick.
- You're leasing an EV after Oct 1, 2025. The pass-through is gone. Negotiate price like any other commodity vehicle.
- You're a sole prop with all-cash purchase and high MAGI. If §30D is closed by income and your business use is 70%, allocate carefully — but recognize the pre-Oct-1 cutoff applies either way.
- The vehicle's GVWR is right at the 14,000 lb threshold. Rounding errors are real. A 13,950 lb GVWR puts you in the $7,500 cap, not the $40,000 cap. Confirm specs before signing.
- Your S-corp K-1 won't absorb the credit. Like all general business credits, §45W is limited at the shareholder level — needs tax liability to use. Plan distributions accordingly.
Did your business buy or lease an EV in 2025? Claim it.
PilePilot's Books agent flags business vehicle purchases, computes the §45W credit (with the right cap by GVWR), reduces depreciable basis, and stacks 100% bonus depreciation correctly. Pre-Sep-30 acquisitions are still claimable — don't leave $7,500 or $40,000 on the table.
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Disclaimer. This page is educational and not tax advice. The §45W credit has specific eligibility, basis, depreciation-interaction, and acquisition-date rules — and a hard OBBBA termination cliff of September 30, 2025. Before claiming, work with a qualified tax professional. All dollar examples are illustrative.