When your business purchases equipment, vehicles, or other qualifying assets, you have choices about how to deduct the cost. You can spread the deduction across the asset’s useful life through standard depreciation, take an immediate deduction in the year of purchase through Section 179, or use bonus depreciation to expense the full cost upfront with fewer restrictions.
The One Big Beautiful Bill Act changed this landscape significantly. Section 179 limits more than doubled. Bonus depreciation was permanently restored to 100 percent. For most small and mid-size businesses, nearly every equipment purchase made in 2026 can be fully deducted in the year of purchase. The question is no longer whether you can deduct it immediately. The question is which method gives you the best outcome for your specific situation.
What Is Standard Depreciation?
Standard depreciation spreads the cost of a business asset over its useful life. Rather than deducting the full purchase price in year one, you deduct a portion each year until the asset is fully depreciated. The IRS assigns useful lives to different asset categories through the Modified Accelerated Cost Recovery System (MACRS).
Under MACRS, computers, vehicles, and equipment typically depreciate over 5 to 7 years. Office furniture depreciates over 7 years. Residential rental property depreciates over 27.5 years. Commercial real estate depreciates over 39 years.
Straight-Line Method
The straight-line method reduces an asset’s value by an equal amount each year until it reaches its salvage value. An asset costing $30,000 with a $5,000 salvage value and a 5-year useful life generates a $5,000 deduction each year.
Declining Balance Method
The declining balance method front-loads deductions into the early years of an asset’s life. This method suits technology products and other assets that depreciate quickly and become obsolete sooner than their stated useful life suggests.
Standard depreciation still has a role in planning. For assets that don’t qualify for Section 179 or bonus depreciation, or for businesses that prefer to spread deductions across years when future income is expected to be higher, MACRS remains the default framework.
What Is Section 179?
Section 179 allows businesses to deduct the full cost of qualifying assets in the year they are placed in service, rather than spreading deductions across multiple years. It was designed to help small businesses make immediate investments without waiting years to recover the tax benefit.
For 2026, the Section 179 deduction limit is $2,560,000, up from the prior TCJA limit of approximately $1.22 million. The OBBBA more than doubled the threshold. The phaseout begins when total qualifying property placed in service during the year exceeds $4,090,000, and the deduction is fully eliminated above $6,650,000. For most small and mid-size businesses, these thresholds are far beyond annual capital spending, meaning the full deduction is available without restriction.
Qualifying property includes equipment, machinery, computers, off-the-shelf software, business vehicles, and certain improvements to nonresidential real property such as roofs, HVAC systems, and security systems.
The Key Limitation of Section 179
Section 179 cannot exceed your taxable business income for the year. If your business generates $200,000 in net income and you purchase $300,000 in qualifying equipment, your Section 179 deduction is capped at $200,000. The unused $100,000 carries forward to the following year.
This limitation is the single most important practical constraint on Section 179. It cannot create a net operating loss. If your income is low or negative, Section 179 loses much of its value.
What Is Bonus Depreciation?
Bonus depreciation is a separate immediate expensing provision that operates alongside Section 179 but with fewer restrictions. The OBBBA permanently restored 100 percent bonus depreciation for qualifying property acquired and placed in service after January 19, 2025.
Unlike Section 179, bonus depreciation has no annual dollar cap. A business can deduct $50,000 or $5 million of qualifying equipment in a single year using bonus depreciation. Unlike Section 179, bonus depreciation can also create a net operating loss, which carries forward to offset income in future profitable years.
One important detail on timing: the qualifying date for 100 percent bonus depreciation is the acquisition date, not the delivery or installation date. Property acquired under a binding contract signed before January 20, 2025 follows the old phase-down rates. Equipment contracted on or after January 20, 2025 qualifies for 100 percent, even if delivered later in 2025 or in 2026.
Vehicle Depreciation Under the New Rules
For passenger vehicles under 6,000 pounds gross vehicle weight rating, luxury auto limits under IRC Section 280F still apply. The first-year depreciation cap for these vehicles is approximately $20,400 for 2026, even with bonus depreciation claimed.
Vehicles over 6,000 pounds GVWR, including most SUVs, pickup trucks, and vans, are not subject to the luxury auto cap. A business purchasing a $75,000 qualifying SUV and using it 100 percent for business can deduct the full $75,000 in year one under bonus depreciation. Business use percentage must be documented and must exceed 50 percent to qualify.
Section 179 vs. Bonus Depreciation: The Key Differences
Both Section 179 and bonus depreciation allow immediate full expensing of qualifying assets. The differences between them determine which is the better tool in a given situation.
Section 179 is capped at your taxable business income. Bonus depreciation is not. Section 179 has an annual dollar limit of $2.56 million in 2026. Bonus depreciation has no dollar limit. Section 179 can be applied selectively to specific assets. Bonus depreciation generally applies automatically to all qualifying assets placed in service unless you elect out for a specific asset class.
For most businesses, the recommended approach is to apply bonus depreciation first to all qualifying assets, then use Section 179 to cover any assets that don’t qualify for bonus depreciation or to fine-tune the deduction amount. Reserving Section 179 for assets bonus depreciation doesn’t reach, such as certain building improvements, gives you the most flexibility.
State conformity is also worth checking. Not all states follow federal bonus depreciation rules. Some states require depreciation to be spread over the asset’s useful life regardless of what the federal return shows. Your state tax liability may look very different from your federal liability depending on where your business operates. A tax advisor familiar with your state’s rules can identify this exposure before it surprises you at filing time.
When Section 179 Makes the Most Sense
Section 179 works best when your business is profitable and you want to offset current-year income with an asset purchase, when you need to control the exact amount of the deduction to avoid pushing income into a lower or higher bracket, or when you’re purchasing assets that qualify for Section 179 but not bonus depreciation.
It is less useful in low-income or loss years because of the taxable income limitation. If you expect to be more profitable in future years, spreading deductions through standard depreciation or carrying forward unused Section 179 may produce better results than trying to maximize the current-year deduction.
An Example
A profitable consulting firm generates $400,000 in net income and purchases $250,000 of new office equipment and computers. Using Section 179, the firm deducts the full $250,000 in the current year, reducing taxable income to $150,000. The deduction is fully absorbed because taxable income exceeds the purchase amount. The firm retains more cash and reinvests in operations.
When Bonus Depreciation Makes the Most Sense
Bonus depreciation is the better tool when your purchases exceed the Section 179 income limit, when you want to create or increase a net operating loss that carries forward to future profitable years, or when the scale of your capital purchases is large enough that Section 179 alone doesn’t cover the full deduction.
For businesses making significant equipment investments in a startup or expansion phase, bonus depreciation allows full immediate expensing even when the business is not yet profitable. The resulting loss carries forward and offsets income once the business becomes profitable, creating a future tax benefit that compounds the value of the early investment.
An Example
A manufacturer acquires $1.5 million of qualifying machinery. The business has $800,000 in net income. Section 179 is limited to $800,000 of income, leaving $700,000 of purchases not immediately deductible under Section 179. Bonus depreciation covers the remaining $700,000 without restriction, creating a net operating loss of $700,000 that carries forward to offset income in the following year.
When Standard Depreciation Still Makes Sense
Standard depreciation over the asset’s useful life remains the right choice for businesses that expect to be significantly more profitable in future years and want to preserve deductions for those years, for assets that don’t qualify for Section 179 or bonus depreciation, for businesses in states that don’t conform to federal bonus depreciation rules, and for certain real property improvements that follow specific depreciation schedules.
The depreciation recapture rules also factor into this decision. Assets fully expensed through bonus depreciation or Section 179 carry a zero adjusted basis. When you sell those assets at a gain, the entire gain up to the original purchase price is subject to Section 1245 recapture as ordinary income, which can reach 37 percent. For businesses that plan to sell equipment frequently, spreading depreciation over time reduces this future exposure.
Combining Section 179 and Bonus Depreciation
The two methods are not mutually exclusive. Most tax advisors use both in the same year, applying them strategically to different assets based on their tax characteristics.
A common approach is to apply bonus depreciation to all assets that qualify, then use Section 179 for assets that don’t qualify for bonus depreciation or to adjust the total deduction to a specific target. This combination, paired with an understanding of which assets qualify for which provision and what the state tax impact looks like, is where the real planning value lies.
For a broader look at how depreciation interacts with asset sales and what happens when you dispose of fully depreciated property, see our guide on amortization vs. depreciation.
Closing Thoughts
The combination of a $2.56 million Section 179 limit and permanent 100 percent bonus depreciation means 2026 is one of the most favorable years on record for businesses investing in capital assets. Almost any equipment purchase a small or mid-size business makes this year can be fully deducted immediately.
The decision about which method to use, and in what combination, depends on your current-year income, your projected income in future years, your state’s conformity rules, and your plans for eventually selling the assets. Getting this right is one of the highest-leverage tax planning decisions you can make. Schedule a free one-on-one strategy session with the Tax Hack team to build the right depreciation strategy for your business.
Frequently Asked Questions
What is the Section 179 deduction limit for 2026?
The Section 179 deduction limit for 2026 is $2,560,000. The phaseout begins when total qualifying property placed in service during the year exceeds $4,090,000 and the deduction is fully eliminated above $6,650,000.
What is the bonus depreciation rate for 2026?
The bonus depreciation rate is 100 percent for qualifying property acquired and placed in service after January 19, 2025. The OBBBA permanently restored this rate, which had been phasing down and was scheduled to reach zero by 2027.
What is the difference between Section 179 and bonus depreciation?
Both allow immediate full expensing of qualifying assets, but they differ in key ways. Section 179 is capped at your taxable business income and has an annual dollar limit of $2.56 million in 2026. Bonus depreciation has no income limitation and no dollar cap, and it can create a net operating loss. Section 179 can be applied selectively to specific assets, while bonus depreciation generally applies to all qualifying assets unless you elect out.
Can Section 179 and bonus depreciation be used together?
Yes. The two methods can be used in the same year on different assets. A common strategy is to apply bonus depreciation to all qualifying assets first, then use Section 179 for assets that don’t qualify for bonus depreciation or to fine-tune the total deduction.
Can bonus depreciation create a net operating loss?
Yes. Unlike Section 179, bonus depreciation has no taxable income limitation and can create or increase a net operating loss. That loss carries forward to offset income in future years, which makes bonus depreciation particularly valuable for businesses in startup or expansion phases that are not yet profitable.
Does my state follow federal bonus depreciation rules?
Not always. State conformity to federal bonus depreciation varies. Some states require assets to be depreciated over their useful life regardless of what the federal return shows, which means your state tax liability can look very different from your federal liability. Check your state’s rules or consult a tax advisor before assuming full state conformity.
What assets qualify for Section 179?
Qualifying assets include equipment, machinery, computers, off-the-shelf software, business vehicles, and certain improvements to nonresidential real property such as roofs, HVAC systems, fire protection systems, alarm systems, and security systems. The asset must be used more than 50 percent for business purposes.
