What Section 179 is
When a business buys equipment, the cost is normally recovered over time through depreciation. A machine expected to last several years is deducted bit by bit across those years. Section 179 of the Internal Revenue Code provides an alternative: an election to expense some or all of the cost of qualifying property in the year it is placed in service.
The practical effect is that a business may be able to reduce its taxable income sooner. For a profitable business making a significant equipment purchase, that can meaningfully change the timing of its tax bill. It does not create a deduction larger than what you paid; it changes when you take it.
This article is a general explanation, not tax advice. Section 179 has annual dollar limits, a phase-out threshold and other rules that are adjusted over time, and your situation may involve state tax rules that differ from federal ones. Confirm the current figures and how they apply to you with a qualified tax professional.
What kind of property can qualify
Section 179 generally applies to tangible personal property used in a business, such as machinery, tools, computers, office furniture, and many types of business vehicles and equipment. Certain off-the-shelf software and some improvements to nonresidential real property can also qualify under the current rules.
The property must be used more than half the time for business purposes, and the deduction is generally limited to the business-use percentage. It also must be placed in service, meaning ready and available for use, during the tax year for which you claim the deduction. Buying equipment in late December that is not delivered and installed until January generally pushes the deduction into the next tax year.
Vehicles have special rules. Passenger automobiles are subject to separate limits, and certain heavier vehicles are treated differently. Ask your tax professional about the specific vehicle before assuming the full cost can be expensed.
How Section 179 works with financing
A key point for many business owners is that Section 179 is based on the cost of property placed in service, not on how much cash you have paid for it. If you finance equipment with a loan, you may be able to elect to expense the full qualifying cost in the year it is placed in service, even though you will be making payments over the coming years.
That can create a situation where the tax savings in the first year help offset the early loan payments. Whether that works out for your business depends on your tax bracket, your taxable income, and the other deductions you have.
Leases are more nuanced. Agreements structured as a purchase, such as many $1 buyout leases, are often treated as a purchase for tax purposes and may qualify. A true lease, where the leasing company retains ownership, generally does not qualify for Section 179 for the lessee, though the lease payments themselves are usually deductible as a business expense. The terms of the specific agreement matter, so have your tax professional review it.
Limits to keep in mind
Section 179 has an annual maximum deduction and a spending threshold above which the deduction begins to phase out. Both figures have been adjusted over the years, including for inflation, so the numbers you heard about in a prior year may no longer be current. Check the current-year limits with your tax professional or the IRS before you buy.
The deduction is also limited by business taxable income. In general, you cannot use Section 179 to create a business loss, though amounts disallowed by this limit may be carried forward to future years.
Finally, if business use of the property later drops to 50% or less, or the property is sold early, some of the deduction may need to be recaptured as income. Planning for how long you will keep and use the equipment matters.
Section 179 vs. bonus depreciation
Bonus depreciation is a separate provision that also lets businesses deduct a large share of qualifying property cost in the first year. It differs from Section 179 in several ways. It is not subject to the same business income limitation, it can create a loss, and the allowable percentage has changed several times through legislation.
Businesses can sometimes use both, applying Section 179 first and then bonus depreciation to remaining eligible cost. Because the current bonus percentage and the interaction between the two depend on the law in effect for your tax year, this is a question for your tax professional.
Making a smart decision
Taxes should be one factor in an equipment decision, not the only factor. Buying equipment you do not need just to reduce taxes means spending a dollar to save a fraction of it. The better question is whether the equipment will produce value for the business and whether the financing payments fit your cash flow.
If the purchase makes sense on its own, then timing and tax treatment become useful considerations. Talk with your tax professional before year-end about whether to expense, depreciate normally, or use a combination, and make sure the equipment will be placed in service in the year you intend.
On the financing side, compare the total cost of an equipment loan, a $1 buyout lease and a fair market value lease. A WellRounded Capital advisor can help you compare financing structures while your tax professional confirms how each would be treated.