Key takeaways
A plant manager signs off on a bagging line in March, the equipment lands in October, and commissioning slips into the first week of January. That one slip moves the entire tax deduction into the next year.
Section 179 lets a business deduct the full cost of qualifying equipment in the year it is placed in service, instead of depreciating it over five or seven years. For the 2026 tax year the maximum deduction is $2,560,000, and it phases out dollar for dollar once total qualifying purchases pass $4,090,000. Automated processing and packaging equipment almost always qualifies.
This guide covers the 2026 numbers, which parts of an automation project count, the three limits that catch manufacturers out, and how to time a project so the deduction lands in the year you planned. It is general information, not tax advice. Your CPA makes the final call.
What Section 179 Actually Does
Normally, a machine is capitalized and depreciated across its useful life, so a $1 million line gives you a fraction of the deduction each year for several years. Section 179 lets you elect to treat the cost as an expense in year one instead.
Two features make it useful in practice. You choose which assets to apply it to, asset by asset, rather than having it apply automatically across a class. And it covers both new and used equipment, as long as the equipment is new to your business and is used more than 50% for business purposes.
Section 179 has been in the tax code for decades, but the limits changed sharply under the 2025 tax law, which roughly doubled them and indexed them to inflation. Plenty of guidance still online quotes the older figures, so check the year on anything you read. It is a timing benefit, not extra money. Deducting the full cost now means no depreciation deductions on that asset in later years. For most growing plants that trade is worth making, because the cash saved in year one is the cash that funds the next project.
The 2026 Numbers
| Item | 2025 Tax Year | 2026 Tax Year |
|---|---|---|
| Maximum deduction | $2,500,000 | $2,560,000 |
| Phase-out begins at | $4,000,000 of purchases | $4,090,000 of purchases |
| Deduction fully gone at | $6,500,000 of purchases | $6,650,000 of purchases |
| Bonus depreciation available alongside | 100% | 100% |
2026 figures come from the IRS annual inflation adjustments (Rev. Proc. 2025-32). The 2025 law raised the base limits from $1.25 million and $3.13 million, and both figures are indexed for inflation going forward. Check irs.gov for the current year before you plan around them.
The phase-out works on total purchases, not on the amount you elect. If a plant buys $4.5 million of qualifying equipment in 2026, the maximum deduction drops by $410,000, the amount by which purchases exceed the threshold, leaving $2,150,000 available under Section 179. Bonus depreciation then covers the rest.
Does Automation Equipment Qualify?
Tangible personal property used in a trade or business is the core category, which covers nearly everything on a production floor. The question that comes up more often is where a project’s other costs sit.
| Project Item | Usually Qualifies for Section 179? | Notes |
|---|---|---|
| Bagging machines, case packers, palletizers | Yes | Standard equipment purchases |
| Powder handling, conveying and mixing systems | Yes | Includes skid-mounted and turnkey systems |
| Robots, grippers and vision systems | Yes | Treated as equipment |
| Controls, PLCs and off-the-shelf software | Yes | Off-the-shelf software is specifically eligible |
| Freight, rigging and installation labor | Usually | Generally capitalized into the equipment’s cost basis |
| HVAC, fire protection and roofing on an existing building | Often | Certain improvements to nonresidential property are eligible; check with your CPA |
| The building itself | No | Real property is not Section 179 property, though other provisions may apply to new production facilities |
| Land and site work | No | Not depreciable property |
Two conditions apply to everything on that list. The equipment has to be used more than half the time for business, and it has to be placed in service during the tax year you are claiming, which is a different date from when you ordered or paid for it.
Three Limits That Catch Manufacturers Out
The dollar limit. You cannot deduct more than $2,560,000 under Section 179 in 2026, however much you spend. Larger projects are still fully deductible in year one, but the excess comes through bonus depreciation rather than Section 179.
The purchase phase-out. Buy heavily in one year and the Section 179 allowance shrinks. A plant running several projects at once can lose the election entirely once purchases pass $6,650,000, which is an argument for spreading projects across tax years when the timing is flexible.
The taxable income limit. Section 179 cannot create or increase a loss. If your business income is lower than the deduction you elected, the unused portion carries forward to future years. Bonus depreciation has no such limit, which is why a plant with a weak income year often leans on bonus depreciation instead.
Section 179 or Bonus Depreciation?
Both get you to a full first-year write-off, so the choice is about control. Section 179 is selective. You apply it to the assets you name, which is useful when you want to expense the palletizer but keep normal depreciation on something else, or when your state’s rules treat the two provisions differently.
Bonus depreciation is automatic by asset class unless you elect out, has no dollar cap, and can create a loss. The usual sequence is Section 179 first on chosen assets, then 100% bonus depreciation on whatever basis is left. Bonus depreciation was permanently restored to 100% for qualifying property acquired after January 19, 2025, so the older phase-down schedule that reduced it each year no longer applies. State conformity is the part worth checking early, because several states cap or disallow bonus depreciation and require an add-back on the state return.
Timing: Placed in Service Is the Date That Counts
For Section 179, the clock runs on the date the equipment is placed in service, meaning it is installed, set up and ready for its intended use. Paying a deposit in June does not create a deduction. Neither does equipment sitting in a crate on the dock in December.
This matters more for automation than for a standalone machine, because a line has shipping, installation, integration and commissioning between delivery and readiness. On a project with a long lead time, the practical question to ask a supplier is not only when the equipment ships, but when it will be running.
A partial year does not reduce the deduction. Equipment placed in service in December is expensed in full for that tax year, the same as equipment placed in service in February, which is why year-end commissioning dates get so much attention. The mid-quarter convention that affects regular MACRS depreciation does not apply to Section 179 or bonus depreciation.
Ordering Late in the Year: What to Ask Your Supplier
If a project starts in the fourth quarter and you want the deduction in the same tax year, the conversation with your supplier changes. These are the questions that decide whether it lands:
Staged commissioning is worth raising early. On a long line, putting the bagging and conveying sections into service first and completing palletizing later can move part of the cost into the earlier tax year, provided each part is genuinely ready for use rather than simply delivered.
“Packaging and processing automation can offer more than operational value. Understanding Section 179 and bonus depreciation helps manufacturers plan equipment investments with greater financial clarity.”
See it in action
A Worked Example: A $1.4 Million Packaging Line
A food manufacturer installs a new end-of-line system in 2026: bagging, case packing and palletizing, plus conveying and controls. Equipment and installation come to $1.4 million. It is the only major purchase that year.
Total qualifying purchases are well below the $4,090,000 threshold, so the phase-out does not apply and the full amount is within the $2,560,000 limit. If the business has at least $1.4 million of taxable income, it can elect Section 179 on the entire line and deduct it in the year the line is commissioned. At a 21% federal rate, that is roughly $294,000 less federal tax that year, before any state effect.
Change one detail and the answer changes. If the same company also spends $3.2 million on other equipment that year, purchases total $4.6 million, the Section 179 allowance falls to $2,050,000, and the rest of the cost moves to bonus depreciation. The deduction still lands, but the mix is different, and so is the state treatment in several states.
What Section 179 Does Not Cover
A few exclusions come up regularly on plant projects. The building itself is real property and does not qualify, though certain improvements to nonresidential property such as HVAC, fire protection and roofing can. Land and site preparation are out. Equipment used predominantly outside the United States is out. So is property acquired from a related party, or by gift or inheritance.
There is also a rule worth knowing after the fact. If business use of an asset drops below 50% before the end of its normal recovery period, part of the deduction is recaptured and added back to income. For production equipment that stays on the floor this rarely bites, but it matters if a machine is later moved, leased out or converted to mixed use.
Fitting Section 179 Into a Multi-Year Capital Plan
Most plants do not buy one line and stop. When two or three projects are queued, the timing between tax years becomes a real decision rather than an afterthought.
Two rules of thumb help. First, if total purchases in a year are heading past $4,090,000, check whether one project can reasonably move into the next tax year, because the Section 179 allowance falls dollar for dollar above that point. Second, if you expect a strong profit year ahead and a weak one now, the income limitation may make the deduction more valuable later, since Section 179 cannot create a loss and bonus depreciation can.
The opposite argument also holds. Equipment prices, lead times and interest costs all move, and a deduction is worth more when it arrives sooner. A tax plan should shape the sequence of projects where the operations schedule allows it, not the other way around.
What Your CPA Will Ask For
Keeping installation and civil work on separate lines of the invoice is the single most useful thing a plant can do here. It makes the eligible portion obvious and saves an argument later.
Five Mistakes Worth Avoiding
How Cybernetik Supports a Section 179 Timeline
Cybernetik builds the processing and packaging systems these deductions usually apply to, and supports US plants through Cybernetik Inc in Summerville, South Carolina. Powder and liquid handling, industrial cooking, bagging, case packing and palletizing all come from one engineering group, backed by more than 6,000 installations worldwide since 1989.
Three things matter when a tax year is part of the plan:
We do not give tax advice or file elections. We make sure the equipment side is specified clearly, delivered on the date you planned around, and capable of the output the investment was justified on.