Section 179 Deduction

This deduction is designed to encourage investment in business assets by providing an immediate tax benefit, improving cash flow, and reducing taxable income in the year of purchase. Section 179 is available to most businesses, including corporations, partnerships, and sole proprietorships, but not to trusts or estates.

Which Businesses and Assets Qualify for the Section 179 Deduction?

Most businesses that purchase, finance, or lease tangible personal property for use in an active trade or business can claim the Section 179 deduction. Qualifying assets include:

• Tangible personal property (machinery, equipment, computers, office furniture)
• Off-the-shelf computer software
• Certain improvements to nonresidential real property (roofs, HVAC, fire protection, security systems)
• Qualified improvement property as defined in IRC §168(e)(6)

Vehicles used more than 50% for business may also qualify, but SUVs and certain vehicles are subject to specific dollar limits. Property must be acquired by purchase and used more than 50% for business in the year placed in service. Assets acquired from related parties, by gift, or inheritance do not qualify. Leased property may qualify under certain conditions, but estates and trusts are not eligible.

Annual Section 179 Limits, Phase-out Thresholds, and Business-income Limitation

For tax year 2026, the maximum section 179 deduction is $2,560,000. This limit is reduced dollar-for-dollar by the amount by which the total cost of qualifying property placed in service during the year exceeds $4,090,000. This is known as the phase-out threshold. If a business places more than $4,090,000 of qualifying property in service, the deduction is reduced, and if it exceeds $6,650,000, no Section 179 deduction is allowed.

Additionally, the deduction cannot exceed the business’s taxable income from the active conduct of any trade or business for the year. Any amount not deductible due to the business-income limitation can be carried forward to future years. These section 179 deduction limitations are adjusted annually for inflation.

How Section 179 Works With Bonus Depreciation and Equipment Financing

Section 179 and Bonus Depreciation are both tools for accelerating deductions, but they operate differently. Section 179 is applied first, allowing businesses to expense up to the annual limit. After Section 179 is applied, any remaining basis in qualifying property may be eligible for bonus depreciation, which, under the One Big Beautiful Bill Act, is 100% for property acquired after January 19, 2025. Bonus depreciation has no annual dollar cap or business-income limitation and can be used for new or used property.

When equipment is financed, businesses can still claim Section 179 on the full purchase price, even if only a portion is paid upfront. This can create a cash flow advantage, as the tax savings may exceed the initial outlay. However, the property must be placed in service during the tax year to qualify.

Common Section 179 Planning Strategies and Pitfalls to Avoid

Planning Strategies:

• Time asset purchases to maximize the deduction in high-income years.
• Combine Section 179 with bonus depreciation for larger first-year write-offs.
• Use a section 179 deduction calculator to model the impact on taxable income and cash flow.
• Consider the impact of the phase-out threshold if planning large capital expenditures.

Pitfalls to Avoid:

• Claiming Section 179 on property not used more than 50% for business.
• Exceeding the annual or phase-out limits.
• Failing to account for the business-income limitation, which can defer deductions.
• Not tracking recapture rules: If business use drops to 50% or less during the recovery period, prior deductions may be subject to Depreciation Recapture as ordinary income.
• Overlooking state conformity: Some states do not follow federal Section 179 rules or have lower limits.

FAQ

How does the Section 179 Deduction differ from regular depreciation?
Section 179 allows businesses to expense the full cost of qualifying assets in the year placed in service, up to the annual limit. Regular depreciation spreads the deduction over several years according to the asset’s recovery period under MACRS. Section 179 provides a faster tax benefit, while regular depreciation offers smaller deductions over time.

What types of equipment, vehicles, and software qualify for Section 179 expensing?
Qualifying property includes tangible personal property such as machinery, computers, office furniture, certain vehicles (subject to limits), and off-the-shelf software. Some improvements to nonresidential real property, like HVAC and security systems, also qualify. The property must be used more than 50% for business and acquired by purchase.

What are the current Section 179 dollar limit and phase-out threshold, and how does the business-income limit work?
For 2026, the Section 179 dollar limit is $2,560,000, with a phase-out threshold of $4,090,000. The deduction is reduced dollar-for-dollar above this threshold. The business-income limit means you cannot deduct more than your taxable business income; any unused deduction can be carried forward.

How can businesses combine Section 179 with bonus depreciation to maximize first-year write-offs?
Apply Section 179 first, up to the annual limit, to qualifying property. Then, use bonus depreciation on the remaining basis of eligible assets. This combination can allow businesses to fully expense most or all of their capital investments in the first year, maximizing tax savings.

What are common mistakes when using Section 179, such as mixed personal use or exceeding limits?
Common mistakes include claiming the deduction on property not used predominantly for business, exceeding the annual or phase-out limits, ignoring the business-income limitation, and failing to recapture deductions if business use drops. Using Section 179 for assets with significant personal use or not tracking state conformity can also lead to issues.

For more details, consult IRS Publication 946 or use a reputable section 179 deduction calculator to estimate your deduction. Section 179 remains a powerful tool for businesses seeking tax credits and deductions for construction, equipment, and technology investments.

How BT Can Help

For more than four decades, Bennett Thrasher has provided businesses and individuals with strategic business guidance and solutions through professional tax, audit, advisory, and business process outsourcing services. Contact Zack Leder, partner in charge of Bennett Thrasher’s Business Tax Practice, or call us at 770.396.2200.