Section 179 Deduction: Limits, Qualifying Equipment & How to Claim

When you buy equipment or property for your business, the default tax treatment is depreciation — spreading the deduction over several years based on the asset's useful life. Section 179 of the Internal Revenue Code offers a powerful alternative: you can deduct the entire cost of qualifying property in the year you place it in service.

Instead of depreciating a $15,000 piece of equipment over five or seven years, you write off the full $15,000 this year. For businesses that invest in equipment, vehicles, software, and other tangible property, Section 179 can dramatically reduce your current-year tax bill.

This election is available to most businesses — sole proprietors, partnerships, S-corps, and C-corps — though there are dollar limits and income restrictions that determine how much you can expense.

For the 2024 tax year, the Section 179 limits are:

These limits are indexed for inflation each year. The $1,220,000 deduction limit is generous enough to cover the equipment needs of the vast majority of small and mid-sized businesses. The phase-out threshold at $3,050,000 means the deduction starts shrinking if you place more than $3,050,000 of qualifying property in service — a concern primarily for larger operations.

The business income limitation is important: you can only deduct up to your net taxable income from active trade or business. If your business earns $80,000 and you buy $100,000 of equipment, you can only expense $80,000 under Section 179. The remaining $20,000 carries forward to future years.

Not every business purchase qualifies. Section 179 applies to specific categories of property:

Property that does not qualify includes: real property (buildings, land), property used outside the U.S., property used for lodging, property acquired from related parties, and air conditioning or heating units for residential property.

There are three main ways to accelerate the deduction for business property. Understanding how they differ helps you choose the right strategy:

Section 179 lets you immediately expense qualifying property up to $1,220,000. You elect it by filing Form 4562. It's limited by business income and requires the asset to be placed in service during the tax year.

Bonus depreciation (IRC § 168(k)) is an automatic first-year deduction for qualifying property. In 2024, the rate is 60% — down from 100% in 2022, as part of a phase-down schedule (80% in 2023, 60% in 2024, 40% in 2025, 20% in 2026, and 0% in 2027). Unlike Section 179, bonus depreciation is not limited by business income and can create a net operating loss. It applies to both new and used property.

De minimis safe harbor under 26 CFR § 1.263(a)-1(f) lets you expense items costing $2,500 or less per invoice/item without any depreciation. This is the simplest option for lower-cost Amazon purchases and office equipment.

Electing Section 179 is straightforward but requires proper documentation:

1. Place the asset in service during the tax year. "Placed in service" means the equipment is ready and available for use in your business — not just purchased. 2. Complete IRS Form 4562 (Depreciation and Amortization). Part I of the form is dedicated to Section 179. 3. Specify each asset you're electing to expense, including a description, date placed in service, cost, and the amount you're electing. 4. Attach Form 4562 to your tax return for the year the property was placed in service.

You can revoke a Section 179 election on an amended return, but you cannot make a late election on an amended return (with limited exceptions). Get it right the first time.

For sole proprietors and single-member LLCs, the Section 179 deduction flows directly to Schedule C. For partnerships and S-corps, it passes through to partners/shareholders on Schedule K-1.

Here are examples of purchases that frequently qualify for Section 179 expensing:

Many of these items are purchased through Amazon, especially for small businesses and home offices. WriteOffCoach identifies which items in your purchase history qualify for Section 179 versus the de minimis safe harbor, helping you choose the optimal deduction strategy for each purchase.