Section 179 + bonus depreciation lets a business deduct equipment, software, qualified improvements — and that 6,800 lb F-250 — 100% in the year it hits the road. Here's the playbook a qualified tax professional actually uses.
You buy a piece of business property — truck, tools, computers, machinery, software, even a roof on a non-residential building. Normally you'd depreciate it over 5, 7, 15, or 39 years. That's a slow drip of tax deductions while the cash already left your bank account.
§179 says: "Just deduct the whole thing this year." Up to $2.5M of qualifying purchases for tax years beginning in 2025. The deduction phases out dollar-for-dollar once total purchases exceed $4M.
§168(k) bonus depreciation goes further: for qualifying property acquired and placed in service after Jan 19, 2025, the One Big Beautiful Bill Act permanently restored 100% bonus depreciation. No dollar cap. No phase-out by purchase volume. Even better — bonus depreciation can create a net operating loss; §179 cannot.
Stack them together: take §179 first up to the cap, then layer 100% bonus on the rest. By the time both tools are done, an $80,000 truck is a single $80,000 line on this year's Schedule C.
One real-shaped client. Two ways of writing the same check. The federal tax difference: about $29,600.
Cash impact: Marcus moves $23,680 of federal tax out of Year 1 (the difference). Add roughly $12,000 of self-employment-tax savings on the same $80K deduction and he's keeping ~$36K in his pocket — the year he actually paid for the truck. Plus state tax in PA + NJ, depending on conformity.
Tangible personal property used in a trade or business (not investment property). Off-the-shelf software counts. Qualified Improvement Property (QIP) — most non-structural interior improvements to non-residential buildings — counts. Land doesn't. Buildings (other than QIP) don't.
Vehicles especially: if business use drops to 50% or below in a later year, you trigger §280F recapture. Keep a written mileage log — Pub 463 standard. PilePilot's Books agent tags personal-use mileage automatically when you flag a trip.
"Placed in service" = ready and available for its assigned use, not just paid for. A truck bought Dec 30 but still on the dealer lot Jan 4 doesn't qualify for Year 1.
GVWR ≤ 6,000 lb → §280F luxury-auto caps apply ($20,200 Year 1 with bonus in 2025). GVWR > 6,000 lb and ≤ 14,000 lb → exempt from §280F caps. SUVs in that band → §179 capped at $31,300 in 2025. Pickup trucks with a 6+ ft cargo bed (F-250, Silverado 2500, Ram 2500, etc.) → not "SUVs" for this purpose, full §179 available.
§179 election is annual — make it on a timely-filed return (extensions OK). 100% bonus is automatic but you can elect out by class life if you want to preserve deductions for a later year.
Every dollar deducted reduces basis. Sell the asset later and the gain (up to the depreciation taken) is §1245 recapture taxed at ordinary rates — not capital gains. This isn't a reason to skip §179. It's a reason to know what's coming.
Every position cited. If the IRS asks "where in the code?" — point here.
§179 + bonus claims aren't risky — sloppy §179 + bonus claims are.
The "100%" claim on a vehicle that's the only one in the household is the #1 vehicle-deduction examination trigger. Keep a contemporaneous mileage log. Have a personal car. Better yet, both.
§179 deduction can't exceed business income. A $200K §179 on a Schedule C showing $40K of net profit will get a letter.
A Dec 31 invoice with a January delivery photo is a classic audit gotcha. Match the placed-in-service date to actual operational readiness.
Sale-leaseback to your own S-corp / LLC to "harvest" §179 has tight related-party rules under §179(d)(2). Skip the cute structures.
QIP applies only to non-residential property. A new HVAC on a rental house = 27.5-year depreciation, no §179, no bonus on the building shell.
Sell the F-250 in Year 3 for $50K? Up to $50K of that is §1245 ordinary income. Not reporting it triggers an automatic CP2000.
Drop in a bank statement. Books tags every large purchase, flags §179/bonus candidates by GVWR and class life, and ties the deduction straight to Schedule C Line 13. With IRS citations on every line.
Limits and rates shown reflect 2025 law (IRC §179 + OBBBA July 2025 update). This is education, not advice. Talk to your tax professional for your situation — or beta-test PilePilot and let us flag the candidates for them.