Finance term
Section 179 Deduction
Also known as: Section 179 expensing, first-year expensing
Definition
Section 179 lets businesses deduct the full purchase price of qualifying equipment or software in the year of purchase — up to $2,560,000 for the 2026 tax year — instead of spreading the cost over years of depreciation.
Detailed explanation
Section 179 of the IRS tax code allows small and mid-size businesses to immediately expense the full cost of qualifying property rather than depreciating it over its useful life under MACRS. The One Big Beautiful Bill Act (P.L. 119-21) raised and permanently inflation-indexed the limits: for tax year 2026, the deduction cap is $2,560,000, with a dollar-for-dollar phase-out beginning at $4,090,000 of qualifying purchases placed in service during the year. The deduction cannot exceed taxable income — it cannot create a net operating loss, though the unused portion can carry forward indefinitely.
Qualifying property includes new or used tangible business equipment (machinery, vehicles, computers, office furniture), off-the-shelf software, and qualified improvement property placed in service during the tax year. The property must be used more than 50% for business purposes. Passenger vehicles have separate, lower limits under Section 179 — sport utility vehicles over 6,000 lbs GVWR are capped at $32,000; the IRS lists the full annual caps in the Instructions for Form 4562.
For equipment-financing decisions, Section 179 is a significant factor. Financing $100,000 in equipment may deliver a $100,000 deduction that offsets taxable income at your marginal rate — potentially recovering 21-37% of the equipment cost via tax savings in year one, independent of how much cash was paid upfront versus financed. This is why the ClearValue team encourages clients to bring their CPA into equipment-financing conversations before year-end.
Source: IRS Instructions for Form 4562 (https://www.irs.gov/instructions/i4562), which publishes the inflation-adjusted Section 179 limits for each tax year.
◈ Worked example
- A restaurant buys $80,000 in commercial kitchen equipment. Under Section 179, the full $80,000 is deducted in year one — not spread over 5-7 years of MACRS depreciation.
- A construction company finances $500,000 in equipment. If taxable income is $600,000, a $500,000 Section 179 deduction reduces taxable income to $100,000.
- A business places $5,000,000 in qualifying equipment in service during 2026 — the phase-out begins at $4,090,000, so the deduction is reduced dollar-for-dollar by $910,000, leaving $1,650,000 available under Section 179 (the remaining basis can still qualify for 100% bonus depreciation).
Common questions
The most-asked questions about Section 179 Deduction — answered straightforwardly.
Does Section 179 apply to leased equipment? +
If you purchase equipment (or finance it under a capital/finance lease that transfers ownership), Section 179 applies. True operating leases do not qualify because you do not own the asset. Confirm with your CPA before finalizing lease vs. purchase structure.
Can Section 179 create a loss? +
No. The Section 179 deduction is limited to your business's taxable income for the year. Any unused deduction carries forward to future tax years. Bonus depreciation does not have this limitation and can create a loss.
What is the 2026 Section 179 deduction limit? +
For the 2026 tax year, the maximum deduction is $2,560,000. The phase-out begins when total qualifying property placed in service exceeds $4,090,000, reducing the available deduction dollar-for-dollar above that threshold. The One Big Beautiful Bill Act (P.L. 119-21) made these limits permanent and inflation-indexed going forward, so they adjust annually without requiring new legislation. See the IRS Instructions for Form 4562 for the current-year figures.
How does Section 179 interact with bonus depreciation? +
Section 179 is applied first, then bonus depreciation applies to any remaining basis. Bonus depreciation was permanently restored to 100% under the One Big Beautiful Bill Act for qualifying property placed in service after January 19, 2025, so businesses often use both together to maximize first-year deductions on large capital purchases. Unlike Section 179, bonus depreciation has no income limitation and can create a loss.
Further reading
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