Tax strategy
Section 179 vs Bonus Depreciation vs MACRS [2026]
You bought equipment — a truck, a CNC machine, a server rack, $50,000 of office furniture. But the IRS won't let you deduct the full cost in one year unless you pick the right method. You have three options: Section 179 immediate expensing, Bonus Depreciation, and MACRS. Each has different limits, rules, and tax outcomes. Here's how to choose.
At a Glance: The Three Methods
| Feature | Section 179 | Bonus Depreciation | MACRS |
|---|---|---|---|
| 2026 Deduction Speed | 100% immediate — deduct full cost in year of purchase | 20% in year 1 — then MACRS on remaining 80% | Spread over 3-39 years depending on asset class |
| 2026 Annual Limit | ~$1.25M (indexed for inflation); phase-out begins at ~$3.05M in total purchases | No dollar cap — unlimited qualifying asset purchases | No dollar cap — applies to all depreciable business property |
| Eligible Property | Tangible personal property used >50% for business, plus qualified improvement property (QIP), roofs, HVAC, security systems | New AND used property with MACRS recovery ≤ 20 years, plus QIP, qualified film/TV/live theater | All tangible depreciable business property, real property (27.5/39-year), land improvements (15-year) |
| Profit Limitation | Yes — critical. Deduction limited to business taxable income. Cannot create or increase a net operating loss. | No — can create or increase a net operating loss. Unlimited even if business is not profitable. | No — depreciation applies regardless of profit. Can create or increase NOL. |
| Used Property Eligible? | Yes — used property qualifies if new to you | Yes — used property qualifies under TCJA (unlike pre-2017 rules) | Yes — both new and used |
| Vehicle Limits | Heavy SUVs (>6,000 lbs GVWR): up to ~$30,500. Passenger autos: subject to luxury auto depreciation caps (~$12,400 year 1 in 2024) | $8,000 additional first-year for passenger autos (subject to luxury caps). No extra cap on heavy vehicles. | Standard luxury auto depreciation limits apply (~$12,400 / $20,400 / $12,200 / $7,260 per year) |
| State Conformity | Most states conform (some with lower limits). Check your state. | Many states DO NOT conform — including CA, NY, NJ, IL, PA, MA. You may face state add-back. | All states conform to MACRS. No state-level surprises. |
Section 179: Immediate Expensing — The Fastest Write-Off
Section 179 of the Internal Revenue Code lets you deduct the full purchase price of qualifying equipment and software in the year you buy it and place it in service — instead of spreading the deduction over multiple years. Think of it as the IRS giving you permission to treat equipment purchases like ordinary business expenses.
2026 Limits (Estimated — Indexed for Inflation)
- Maximum Section 179 deduction: ~$1,250,000 (2024 was $1,220,000; inflation-adjusted annually)
- Phase-out threshold: Deduction is reduced dollar-for-dollar when total equipment purchases exceed ~$3,050,000 (2024 was $3,050,000)
- SUV/CUV limit: Vehicles with GVWR between 6,000 and 14,000 lbs are capped at ~$30,500 (2024 was $30,500)
The Profit Limitation — Section 179's Biggest Constraint
You cannot use Section 179 to create or increase a net operating loss. Your total Section 179 deduction for the year cannot exceed your total taxable business income (from all businesses combined, including wages). If your business had $35,000 of taxable income and you bought $80,000 of equipment, your Section 179 deduction is capped at $35,000 — the remaining $45,000 carries forward to future years.
Business Use Requirement
Property must be used more than 50%for business. If business use drops below 50% during the property's recovery period, you must recapture (pay back) the excess depreciation benefit from prior years. This is called “Section 179 recapture.”
Qualified Improvement Property (QIP)
Since the Tax Cuts and Jobs Act fix (CARES Act technical correction in 2020), Qualified Improvement Property — interior improvements to nonresidential real property placed in service after the building was first placed in service — is eligible for Section 179 AND 15-year MACRS. This was a major win for restaurant, retail, and office buildout projects. Roofs, HVAC, fire protection, alarm, and security systems also now qualify.
Bonus Depreciation: Shrinking Fast in 2026
Bonus depreciation (Section 168(k)) allows an additional first-year depreciation deduction on qualified property. Unlike Section 179, it has no dollar limit and no profit limitation — you can deduct your bonus depreciation even if your business loses money. However, the percentage is phasing down:
| Year | Bonus Depreciation % | Status |
|---|---|---|
| 2018 – 2022 | 100% | Full expensing — identical outcome to Section 179 (for qualifying property) |
| 2023 | 80% | Remaining 20% depreciated under MACRS |
| 2024 | 60% | Remaining 40% depreciated under MACRS |
| 2025 | 40% | Remaining 60% depreciated under MACRS |
| 2026 | 20% | Only 20% immediate — Section 179 becomes the clear winner for most small businesses |
| 2027+ | 0% — scheduled to expire | All depreciation reverts to MACRS only (unless Congress extends) |
Multiple legislative proposals in 2025-2026 would extend 100% bonus depreciation or restore higher percentages. Check current-year IRS guidance before making large equipment purchases.
MACRS: The Standard Fallback
Modified Accelerated Cost Recovery System (MACRS) is the default depreciation method for all tangible property. If you don't elect Section 179 or cannot claim bonus depreciation, MACRS applies automatically. It uses the declining-balance method (switching to straight-line when that produces a larger deduction) over IRS-specified recovery periods:
| Recovery Period | Method | Typical Property |
|---|---|---|
| 3-year | 200% DB | Tractors, racehorses, special tools for manufacturing |
| 5-year | 200% DB | Computers, office equipment, vehicles, light trucks, R&D equipment |
| 7-year | 200% DB | Office furniture, fixtures, agricultural machinery, railroad track |
| 10-year | 200% DB | Vessels, barges, smart grid property, fruit-bearing trees/vines |
| 15-year | 150% DB | Land improvements (parking lots, fences, sidewalks), QIP, qualified restaurant property |
| 20-year | 150% DB | Farm buildings, municipal sewers |
| 27.5-year | Straight-line (SL) | Residential rental property (apartments, single-family rentals) |
| 39-year | Straight-line (SL) | Nonresidential real property — office buildings, warehouses, retail space |
MACRS also provides mid-quarter and half-year conventions that affect the first and last year's depreciation. The convention you use depends on when during the year the property was placed in service and whether more than 40% of your additions were placed in service in the last quarter.
Real-World Strategy Examples (2026)
Example 1: Profitable HVAC Contractor — Section 179 Wins
Scenario: HVAC business with $200,000 taxable income buys a $45,000 work van, $15,000 of new tools, and $10,000 of office computers — total $70,000 in equipment in 2026.
Best Move: Section 179 — Deduct the Full $70,000
At a 24% marginal rate, this saves $16,800 in federal tax. Bonus depreciation would only give 20% ($14,000) plus MACRS on the rest — a much smaller year-1 deduction of ~$25,000. Since taxable income ($200K) far exceeds the deduction ($70K), the profit limitation doesn't bite.
Example 2: Startup With Losses — Bonus Depreciation + MACRS
Scenario: First-year restaurant buys $120,000 of kitchen equipment and $30,000 of furniture. Business shows a ($50,000) tax loss before depreciation — not yet profitable.
Best Move: Skip Section 179 — Use Bonus + MACRS
Section 179 is limited to $0 (no taxable income) — all $150,000 would carry forward without immediate tax benefit. Take 20% bonus depreciation ($30,000) in 2026. This increases the NOL to ($80,000), which can be carried forward to offset future profits (NOLs generated after 2020 can offset up to 80% of taxable income in future years). Depreciate the remaining $120,000 under MACRS.
Example 3: Big Equipment Purchase Over Phase-Out — MACRS Is All That's Left
Scenario: Growing construction company buys $3,500,000 of heavy equipment in 2026. Section 179 phase-out: $3,500,000 - $3,050,000 = $450,000 over threshold → $1,250,000 - $450,000 = $800,000 remaining Section 179 deduction. But they already have $3M of taxable income.
Best Move: Section 179 for $800K + MACRS + 20% Bonus on Balance
Take $800,000 via Section 179. Apply 20% bonus depreciation on the remaining $2,700,000 ($540,000 immediate). Total year-1 deduction: $1,340,000. The rest ($2,160,000) spreads across MACRS recovery periods. Without this combination, you'd only get ~$700,000 in year-1 MACRS depreciation.
State Conformity: The Hidden Trap
Many states do not conform to federal bonus depreciation rules. This means your state taxable income can be significantly higher than your federal taxable income in the year you take bonus depreciation:
States That Decouple from Bonus Depreciation
California, New York, New Jersey, Illinois, Pennsylvania, Massachusetts, Wisconsin, Minnesota, Georgia, North Carolina, Arkansas, Hawaii, and several others either do not allow bonus depreciation or require add-back of the federal deduction over multiple years.
Section 179 State Conformity
Most states conform to Section 179, but some set lower limits: New York caps at $25,000; California historically did not conform until 2010 and now allows Section 179 with a $25,000 limit; New Jersey does not allow Section 179 at all. Always check your state's current rules before making large equipment purchasing decisions.
The state decoupling creates a recordkeeping burden: you must track two separate depreciation schedules — one for federal and one for state. Most tax software handles this automatically for straightforward scenarios, but large equipment purchases or complex entity structures may require a CPA.
Calculate Your Equipment Tax Savings
The optimal depreciation strategy depends on your equipment cost, purchase timing (Q4 purchases trigger mid-quarter convention), taxable income, and state of operation. Use our calculators to model different scenarios:
Frequently asked questions
Can I use Section 179 AND Bonus Depreciation on the same asset?+
Yes — and this is the standard strategy for maximizing year-1 deductions. You apply Section 179 first (because it has the profit limitation), then apply bonus depreciation on the remaining basis. Example: $200K equipment, $100K Section 179, bonus depreciation on the remaining $100K (20% in 2026 = $20K), then MACRS on the $80K balance. The Section 179 election is made on Form 4562 Part I; bonus depreciation is automatic unless you elect out.
What assets are NOT eligible for Section 179 or Bonus Depreciation?+
Land (never depreciable), inventory, intangible assets (goodwill, patents — depreciated under Section 197 over 15 years), property used for personal purposes (must be >50% business use), property acquired from a related party, and property used predominantly outside the US. Buildings (real property) are not eligible for Section 179 or bonus depreciation — only Qualified Improvement Property and certain building systems (roofs, HVAC, etc.) qualify.
Does the de minimis safe harbor election affect this decision?+
Yes — under the tangible property regulations (Treas. Reg. §1.263(a)-1(f)), you can elect to deduct up to $2,500 per invoice (or per item as substantiated by invoice) for tangible property that would otherwise need to be depreciated. This requires a written accounting policy in place at the beginning of the tax year. For micro-businesses, this can eliminate the need for depreciation on small purchases (under $2,500) entirely.
I bought equipment in December — can I still take Section 179?+
Yes, as long as the equipment is 'placed in service' by December 31. Placed in service means the asset is ready and available for its specific use — it doesn't mean you actually have to use it. For example, a piece of manufacturing equipment that is installed and tested by December 31 qualifies even if production doesn't start until January. However, Q4 acquisitions can trigger the mid-quarter convention for MACRS on remaining basis if >40% of your annual asset additions were placed in service in Q4.
How do I fix a mistake — if I should have used a different depreciation method?+
You can file Form 3115 (Application for Change in Accounting Method) to correct depreciation errors. This is an automatic change (not requiring IRS consent) for most depreciation corrections under Rev. Proc. 2024-23. The catch-up adjustment (Section 481(a) adjustment) is generally taken in the year of change. This is complex and typically requires a CPA. The alternative — filing an amended return for each affected year — may also be an option if within the statute of limitations (generally 3 years).