Section 179 vs. Bonus Depreciation in 2026: What’s the Difference?
If your business plans to purchase equipment, vehicles, software, or certain business improvements in 2026, understanding the difference between Section 179 and bonus depreciation could significantly reduce your tax bill.
While both provisions allow businesses to accelerate depreciation deductions, they work very differently. Knowing when each applies can help you maximize tax savings and make smarter purchasing decisions.
How the Two Deductions Work Together
One of the most important rules is the order in which depreciation is calculated.
The IRS requires businesses to apply deductions in the following order:
- Section 179 deduction.
- Bonus depreciation.
- Regular MACRS depreciation on any remaining basis.
Because Section 179 is applied first, it reduces the property’s depreciable basis before bonus depreciation is calculated.
What Is Section 179?
Section 179 allows businesses to elect to immediately expense the cost of qualifying business property instead of depreciating it over several years.
Eligible property generally includes:
- Business equipment and machinery.
- Computers and technology.
- Off-the-shelf software.
- Qualified improvement property.
- Certain improvements to nonresidential buildings, including HVAC systems, roofs, fire protection systems, alarm systems, and security systems.
Section 179 Limits for 2026
For tax years beginning in 2026:
- Maximum Section 179 deduction: $2,560,000.
- Phase-out begins when qualifying property placed in service exceeds $4,090,000.
Section 179 is also limited by the amount of taxable income generated from the active conduct of a trade or business. Any unused deduction may generally be carried forward to future years.
What Is Bonus Depreciation?
Bonus depreciation provides an additional first-year depreciation deduction for qualifying business property.
Unlike Section 179, bonus depreciation generally applies automatically unless the taxpayer elects out.
Qualified property generally includes:
- MACRS property with a recovery period of 20 years or less.
- Certain computer software.
- Water utility property.
- Certain film, television, theatrical, and sound recording productions.
Bonus Depreciation Rates for 2026
The applicable deduction depends primarily on when the property was acquired.
- Property acquired after January 19, 2025: Generally eligible for 100% bonus depreciation.
- Property acquired before January 20, 2025 and placed in service during 2026: Generally eligible for 20% bonus depreciation.
Unlike Section 179, bonus depreciation generally has no annual dollar limitation and is not restricted by taxable business income.
Can You Elect Out?
Yes.
Businesses may elect out of bonus depreciation for an entire class of qualifying property if doing so better aligns with their long-term tax planning strategy.
This election applies to all eligible assets within that class placed in service during the tax year.
Important Limitations
Section 179 generally cannot be used for:
- Estates and trusts.
- Certain property acquired by gift or inheritance.
- Certain related-party transactions.
- Property used predominantly outside the United States.
For qualifying SUVs placed in service during 2026, the Section 179 deduction is generally limited to $32,000.
Bonus depreciation generally does not apply to:
- Property required to use the Alternative Depreciation System (ADS).
- Property placed in service and disposed of during the same year.
- Property converted from business to personal use during the year of acquisition.
- Property for which the taxpayer elects out.
Key Differences at a Glance
- Section 179 is elected by the taxpayer on an asset-by-asset basis.
- Bonus depreciation generally applies automatically by class unless the taxpayer elects out.
- Section 179 is limited by annual dollar caps and taxable business income.
- Bonus depreciation generally has no dollar cap or taxable income limitation.
- Section 179 applies to certain building improvements that bonus depreciation may not cover.
- Section 179 is applied before bonus depreciation when both deductions are available.
Final Thoughts
Both Section 179 and bonus depreciation remain valuable tax-saving tools in 2026, but they serve different purposes.
Section 179 offers greater flexibility and control over which assets are immediately expensed, while bonus depreciation generally provides larger first-year deductions for qualifying property acquired after January 19, 2025.
Choosing the right strategy—or combining both deductions correctly—can significantly reduce your business’s taxable income and improve cash flow.
Need Help Maximizing Your Business Deductions?
As a CPA firm, we help businesses determine when to use Section 179, bonus depreciation, and other tax-saving strategies to maximize deductions while remaining fully compliant with IRS rules.
Whether you’re purchasing equipment, expanding operations, or planning year-end tax strategies, our experienced CPA team can help you make informed decisions that support your business goals.
Contact our CPA team today to schedule a consultation and build a proactive tax strategy for your business in 2026 and beyond.
Strategic depreciation planning today can create substantial tax savings and strengthen your business’s financial future.
