If you’re planning an equipment purchase, timing it before year-end could mean deducting the full cost immediately instead of over several years. Section 179 and bonus depreciation let you do exactly that, within current-year limits. But there are phase-outs to know about, and the purchase needs to fit your broader tax picture, not just your operational need for the equipment. This is one of those decisions where timing is the whole ballgame.
How Section 179 and Bonus Depreciation Let You Deduct Equipment Cost Upfront
Normally, equipment gets depreciated — its cost deducted gradually over a multi-year recovery period the IRS assigns based on the type of asset. Section 179 and bonus depreciation both let you accelerate that instead, taking some or all of the tax deduction in the year the equipment is placed in service rather than spreading it out.
Section 179 is an election you make item by item, up to an annual dollar limit. Bonus depreciation applies automatically to qualifying property unless you elect out, and under current law it’s 100% — with no dollar cap at all. The two are frequently used together: Section 179 first, up to its limit, with bonus depreciation covering the remainder.
Under current law: 100% bonus depreciation (no cap) + Section 179 up to $2,560,000 (2026) — most equipment purchases are fully deductible in the year they’re placed in service.
The phrase “placed in service” matters more than most contractors expect. It doesn’t mean ordered, paid for, or even delivered — it means up and running, ready for its intended use, by the end of the tax year. A truck sitting on a dealer’s lot in late December, waiting on financing paperwork or aftermarket upfitting, hasn’t been placed in service yet. That distinction is exactly what turns “buy before year-end” from a marketing slogan into a real deadline.
Current-Year Limits and Phase-Outs Contractors Need to Know
- The Section 179 dollar cap — $2,560,000 for 2026, phasing out dollar-for-dollar once total qualifying equipment purchases for the year exceed $4,090,000, and disappearing entirely around $6.65 million — relevant mainly to contractors making several large purchases in the same year.
- The taxable income limit on Section 179 — it can’t create or increase a net operating loss; the deduction is capped at your business’s taxable income for the year. Bonus depreciation has no such limit and can create or add to a loss.
- Favorable treatment for heavy vehicles — trucks and SUVs with a gross vehicle weight rating over 6,000 pounds avoid the flat-dollar depreciation caps that apply to standard passenger vehicles — which is exactly why a heavy truck purchase is such a common year-end move for contractors.
Timing Purchases Around Tax Planning, Not Just Operational Need
It’s tempting to treat this purely as an operational decision — the crew needs the equipment, so you buy it when it’s needed. But the tax value of accelerating that deduction depends heavily on your income for the year it’s claimed. A year with unusually strong profit is often the best year to advance a planned purchase, since the deduction offsets income that would otherwise be taxed at your marginal income tax rate. A year with unusually low income is often better spent waiting — the same deduction is worth less against a smaller tax bill, and might do more for you in a future year when income, and your tax rate, are higher.
This does not mean buying equipment you don’t actually need just to get a tax deduction — the equipment still has to make operational sense on its own. But when a purchase is already planned for sometime in the next several months, checking it against this year’s income picture before deciding exactly when to sign is a five-minute conversation that can meaningfully change what that purchase actually costs you, after tax.
Whether Section 179, bonus depreciation, or both make sense for a specific purchase depends on your income for the year, what else you’re buying, and whether the equipment can actually be placed in service in time. We’ll run the numbers against your current tax picture before you commit. Reach out to schedule year-end tax planning tied to your equipment purchase.
Next in this series: “Bill Wrong, and You’re Financing the Client’s Project for Free” — once your equipment decisions are dialed in, progress billing is the next place cash quietly slips behind the work you’ve already done. Read Blog Post 26.43.
