Section 179 Deduction vs Bonus Depreciation 2026

When your business buys equipment, you usually do not have to spread the deduction over five or seven years. Two rules let you write off most or all of the cost the same year you put the gear to work: the Section 179 deduction and bonus depreciation. For 2026 the Section 179 limit is $2,560,000, and bonus depreciation is back to 100% and now permanent after the 2025 tax law. They overlap a lot, but they are not the same, and the order you take them in matters. This guide explains how each one works for non-vehicle equipment, when to use which, and the records the deduction rests on.

What is the difference between Section 179 and bonus depreciation?

Section 179 lets you choose how much of an asset's cost to expense, up to an annual dollar cap, and it cannot push your business into a loss. Bonus depreciation has no dollar cap and no income limit, it applies automatically to whole classes of property, and it can create or deepen a loss. Both let you deduct equipment in year one instead of depreciating it slowly, so many businesses use them together.

The practical split comes down to control versus reach. Section 179 is a scalpel: you pick the exact assets and even the exact dollar amount you want to expense, which is handy when you want to land on a specific taxable income. Bonus depreciation is a firehose: once you leave it on, it writes off 100% of every eligible asset in a class. Because Section 179 is capped and income-limited while bonus is not, most small businesses apply Section 179 first to fine-tune the result, then let bonus depreciation clean up whatever is left.

What is the Section 179 deduction limit for 2026?

For tax years beginning in 2026, the maximum Section 179 deduction is $2,560,000, and it starts to phase out once you place more than $4,090,000 of qualifying property in service. The deduction drops dollar for dollar above that threshold and disappears entirely at $6,650,000. These figures come from Rev. Proc. 2025-32 and are up from the 2025 limits of $2,500,000 and $4,000,000.

Those ceilings climbed sharply because of the 2025 tax law, the One Big Beautiful Bill Act (Public Law 119-21, section 70301), which raised the base Section 179 cap to $2,500,000 with a $4,000,000 phase-out and then indexed both for inflation. For the vast majority of small businesses the cap is irrelevant: if you buy $40,000 of computers, machinery, and furniture, you are nowhere near $2.5 million, so the limit never bites. The one number that does affect most owners is the business income limitation, covered below.

Does Section 179 create a loss?

No. The Section 179 deduction cannot exceed your aggregate taxable income from any active trade or business, so it can never create or increase a net loss (IRC 179(b)(3)). For an individual the income test is generous: it counts Schedule C profit, W-2 wages, farm income, and pass-through business income, so a sole proprietor with a day job can often still use Section 179 against those wages. Anything you cannot deduct this year because of the income limit carries forward indefinitely to a future year.

This single rule is the most common reason a business reaches for bonus depreciation instead. If you had a lean year and Section 179 would be capped by low income, bonus depreciation has no such limit and can take the same equipment all the way to a 100% write-off, even if that creates a loss you carry to another year.

Is bonus depreciation 100% in 2026?

Yes. Bonus depreciation is 100% for qualified property both acquired and placed in service after January 19, 2025, and the 2025 tax law made that 100% rate permanent (OBBBA section 70401, amending IRC 168(k)). Before that law, bonus was phasing out: it would have been 40% in 2025 and just 20% in 2026 before hitting zero. The law reversed the slide and locked in full expensing.

Two details trip people up. First, bonus depreciation has a dual timing test: the property must be both acquired after January 19, 2025 and placed in service after that date, so gear bought under an older binding contract can be stuck on the old phase-down rates. Second, bonus applies automatically to whole classes of property unless you elect out, and the election to opt out is made class by class on a timely filed return. The IRS issued interim guidance on the new rules in Notice 2026-11.

What equipment qualifies for Section 179?

Section 179 covers tangible personal property used in your business: machinery, computers, servers, tools, office furniture, equipment, and similar gear, whether new or used. It also covers off-the-shelf software (custom-built software does not qualify), and certain improvements to nonresidential buildings such as roofs, HVAC, fire protection and alarm systems, and security systems, plus qualified improvement property (interior upgrades to commercial space). The building itself never qualifies.

To deduct an asset, you have to place it in service during the tax year, which means it is ready and available for its intended use, not merely ordered or paid for. A printer sitting in its box on December 31 is not in service. Bonus depreciation reaches a similar pool of property, generally anything with a recovery period of 20 years or less. For business vehicles the rules are different and capped, so if you are buying a truck or SUV, read our guide to the vehicle expense deduction rather than relying on the equipment rules here.

Can you take Section 179 and bonus depreciation on the same asset?

Yes, and the order is fixed. You apply Section 179 first to reduce the asset's cost basis, then bonus depreciation on whatever basis remains, then regular MACRS depreciation on anything still left (per the Form 4562 instructions). With 100% bonus available in 2026, that third step rarely matters for equipment, because Section 179 plus bonus usually zeroes out the basis in year one.

A simple example: you buy a $30,000 CNC machine and a $10,000 set of computers. You could expense the full $40,000 with Section 179 if your income supports it. If your income only supports $25,000 of Section 179 this year, you take that, then 100% bonus depreciation wipes out the remaining $15,000 with no income limit, so you still deduct the whole $40,000. The split between the two tools changes the paperwork, not the total write-off, in a year with full bonus.

Is it better to take Section 179 or bonus depreciation?

It depends on your income and your state. Choose Section 179 when you want precise control, for example to deduct exactly enough to drop into a lower bracket while leaving income to absorb other items, or when you live in a state that allows Section 179 but not bonus. Choose bonus depreciation when your income is too low for Section 179 to help, when you want a write-off large enough to create a loss, or when you simply want full expensing across a whole class of assets without electing each one.

State conformity is the most overlooked factor. Many states do not follow federal bonus depreciation and make you add it back on the state return, and some cap Section 179 well below the federal limit. California, for example, limits Section 179 to $25,000 and does not allow bonus depreciation at all. A deduction that is free at the federal level can still raise your state bill, so check your own state before you assume the federal answer is the whole story.

Can you deduct equipment you financed?

Yes. You can expense the full cost of qualifying equipment under Section 179 or bonus depreciation even if you financed it and have paid little or none of the principal in cash that year. The deduction is tied to placing the asset in service, not to how much you have paid down the loan. That is what makes year-end equipment buys attractive: you can put a financed machine to work in December, deduct the entire cost on this year's return, and pay for it over the next few years.

The catch is substantiation. You need the purchase invoice showing the asset, the price, the date, and the vendor, and you need to be able to show the date it was placed in service. Keep the financing documents too. When the equipment arrives with a vendor bill rather than a simple slip, pulling the line items into a spreadsheet is easier with an invoice data extraction tool that turns the PDF into clean rows you can drop into your fixed-asset list.

What happens if you sell the equipment later?

When you sell equipment you expensed, the IRS takes some of the deduction back through depreciation recapture. Because Section 179 and bonus depreciation are treated as depreciation, the gain on sale is taxed as ordinary income up to the total amount you wrote off (Section 1245 recapture), reported on Form 4797. In plain terms, if you fully expensed a $20,000 machine and later sell it for $8,000, that $8,000 is ordinary income because your basis is zero.

There is a second recapture trap specific to Section 179. If business use of the property drops to 50% or less before the end of its normal recovery period, you have to recapture the excess of the Section 179 deduction over what ordinary depreciation would have allowed, reported as other income. That is why it matters to track how each asset is actually used, not just what it cost.

How do you claim Section 179 and bonus depreciation?

Both run through Form 4562, Depreciation and Amortization: Part I is the Section 179 election, Part II is the special depreciation allowance (bonus), and Part III is regular MACRS. The total then flows to Schedule C, Line 13, Depreciation and section 179 expense deduction, for a sole proprietor. Partnerships, S corps, and C corps report on their own returns, but the Form 4562 mechanics are the same.

The deduction is only as solid as your records. For every asset you expense you want the purchase document, the placed-in-service date, the business-use percentage, and proof of payment, kept for as long as you own the asset plus the period the return stays open. The cleanest way to do this is to capture each equipment invoice or receipt the day it arrives and keep a running asset register. Scanning the paperwork into a structured spreadsheet with a receipt tracker for small business means the date, vendor, and amount behind every Section 179 line are ready if the IRS ever asks. If your records live across bank and card feeds, exporting them with a bank statement to Excel converter helps you reconcile the equipment purchase against what actually cleared your account.

Frequently asked questions

Is bonus depreciation permanent now?

Yes. The 2025 tax law (the One Big Beautiful Bill Act) restored bonus depreciation to 100% permanently for qualified property acquired and placed in service after January 19, 2025. There is no scheduled phase-down the way there was under the prior law, so full expensing is the standing rule rather than a benefit that expires.

Can a small business with low profit still write off equipment?

Yes, usually through bonus depreciation. Section 179 is limited to your business income and cannot create a loss, so a low-profit year caps it. Bonus depreciation has no income limit and can take the same equipment to a full 100% write-off even if that produces a loss, which you can then carry to another tax year.

Do I need a receipt for every piece of equipment I deduct?

Yes. You need a record that shows the asset, the cost, the date, and the vendor, plus the date you placed it in service, for any equipment you expense. A vendor invoice or paid receipt is the standard proof, and keeping it organized matters because Section 179 and bonus depreciation are common audit checkpoints. See our guide on what receipts a small business can deduct for the wider recordkeeping picture.

Equipment write-offs are one slice of your year-end tax picture. To put them in context with the rest of your spending, see how to categorize business expenses for taxes, and if you are self-employed, our receipt scanner for self-employed keeps the documentation behind every deduction in one place. If you own rental property, both write-offs commonly apply to the appliances, carpet, and improvements you place in service, which we walk through in the rental property tax deductions checklist.