Bonus Depreciation 2026: What Business Owners Should Review Before Buying Equipment

How Bonus Depreciation 2026 Works Before You Buy Equipment

Bonus depreciation is an additional first-year depreciation deduction.

For qualifying property, it may allow the business to deduct a large portion, or possibly all, of the depreciable cost in the year the property is placed in service.

The deduction is generally based on the property’s depreciable basis and the percentage used for business.

If the business claims a Section 179 deduction first, that amount usually reduces the basis used to calculate bonus depreciation. Any basis left after that may be depreciated under the regular MACRS rules.

Two phrases matter here:

• Qualified property
• Placed in service

Paying for equipment does not automatically satisfy either requirement.

The IRS provides a basic explanation in Topic No. 704, Depreciation. More detailed guidance is available in IRS Publication 946.

You can also review the IRS’s current guidance on the additional first-year depreciation deduction.

This article focuses mainly on regular business equipment. Qualified production property, certain aircraft, and long-production-period property may have separate timing or election rules.

Mistake 1: Assuming Every Business Purchase Qualifies

Not everything purchased for a business qualifies for bonus depreciation.

Machinery, tools, computers, office furniture, and other property with a qualifying recovery period may be eligible. Certain software and some improvements to nonresidential property may qualify as well.

Other property follows different rules.

Land does not depreciate. Buildings and other long-lived real estate usually follow their own depreciation rules. Inventory, supplies, and materials are also treated differently from equipment.

The description on the invoice does not settle the issue.

An invoice may call something “equipment,” but the tax treatment depends on what the property actually is, how it will be used, and which depreciation rules apply.

Before assuming the full cost is deductible, identify the property clearly. Determine whether it is depreciable and whether the entire purchase qualifies or only part of it.

Mistake 2: Confusing the Purchase Date With the Placed-in-Service Date

Paying a deposit in December does not automatically create a December deduction.

Signing the purchase agreement may not be enough either.

Property is generally placed in service when it is ready and available for its intended business use.

For example, a machine may arrive at the business in December but still need installation, testing, or inspection. If it is not ready to operate until January, the placed-in-service date may fall in the next tax year.

The same issue can come up with vehicles, computer systems, manufacturing equipment, and other assets that need setup before the business can use them.

Keep records showing what happened and when. These may include:

• Purchase agreements
• Invoices
• Delivery records
• Installation documents
• Testing reports
• Inspection records
• Internal acceptance forms

For simple equipment, the placed-in-service date may be obvious. For custom equipment or larger projects, it may take more work to support the date.

Do not push the date into an earlier year just because the deduction would be more helpful. Make sure the property was actually ready to do the job.

Mistake 3: Ignoring Business Use and Vehicle Limits

Bonus depreciation is based on business use.

If property is used partly for business and partly for personal reasons, the personal portion does not become deductible simply because the business paid for it.

Vehicles are a common trouble spot.

A business vehicle may be subject to passenger automobile limits, listed-property rules, or other restrictions. The result can depend on the type of vehicle, its weight, how it is used, and the percentage of qualified business use.

Buying a vehicle through an LLC or corporation does not automatically make the entire cost deductible.

Good records matter.

Keep a mileage or usage log showing the date, business purpose, business miles or hours, personal use, and total annual use.

For listed property, the business should keep adequate records showing business use. The deduction may be limited if qualified business use is not high enough.

There may also be a recapture issue later. If qualified business use falls to 50% or less, some of the accelerated depreciation claimed in an earlier year may need to be added back to income.

The IRS uses Form 4562 to report depreciation, Section 179, special depreciation allowances, and listed-property information. The Instructions for Form 4562 explain the reporting details.

For vehicle use and mileage records, IRS Publication 463 provides additional guidance.

IRSProb’s guide to who should own the business vehicle can also help with the ownership and recordkeeping side of the decision.

Mistake 4: Claiming Bonus Depreciation Without Comparing Section 179

Bonus depreciation and Section 179 are not the same deduction.

Section 179 is generally elected for specific qualifying property. It has annual dollar limits, an investment phaseout, and a business-income limitation.

Bonus depreciation generally applies to qualifying property unless the taxpayer makes a valid election out for that property class. It may also create or increase a business loss.

Regular depreciation spreads the deduction over future years.

That means the best choice may not be obvious.

A large current deduction may help when the business has strong taxable income now. On the other hand, spreading deductions over several years may be more useful when the business expects higher income later.

Section 179 may also give the owner more control over which assets receive an immediate deduction. A bonus depreciation election out generally applies by property class rather than one asset at a time.

Some taxpayers may also need to review transition election rules for the first tax year ending after January 19, 2025. In limited situations, a lower special depreciation percentage may be available instead of 100%.

Before making the choice, look at:

• Current taxable income
• Expected future income
• Section 179 limits
• State tax treatment
• Vehicle restrictions
• Cash flow
• Future plans for the property

IRSProb’s article on tax planning strategies explains why one deduction should be reviewed as part of the wider tax picture.

The best choice is the one that fits the business’s income, cash flow, state tax treatment, and future plans.

Mistake 5: Assuming Every Used Equipment Purchase Qualifies

Used equipment may qualify for bonus depreciation, but not every used purchase is eligible.

Used property may qualify only if the taxpayer or predecessor did not previously use it, it was not acquired from a related party or controlled-group member, and the basis rules do not disqualify the transaction.

The relationship between the buyer and seller matters.

Buying used equipment from an unrelated dealer may be fairly straightforward. Buying it from a family member, related business, or company under common control may require a closer review.

Lease-to-purchase arrangements can also create questions. If the buyer used the property before buying it, the prior-use rules may affect eligibility.

Keep records showing:

• Who sold the property
• Who previously owned it
• Whether the parties are related
• Whether the buyer used it before the purchase
• How the purchase price and tax basis were determined

Used property is not automatically disqualified. It is also not automatically eligible.

Review the facts before claiming the deduction.

Mistake 6: Taking the Full Deduction Without Planning for a Later Sale

Bonus depreciation moves deductions forward.

It does not erase the tax consequences that may come later.

A 100% deduction can reduce the property’s tax basis to little or nothing. That usually means there will be less depreciation available in future years.

If the business later sells the equipment, the sale may create taxable gain. Some or all of that gain may be treated as ordinary income under the depreciation recapture rules.

Recapture can affect the tax result even when the original deduction was properly allowed.

The sale may need to be reported on Form 4797. IRS Publication 544 explains the rules for selling and disposing of business property.

Before claiming the full deduction, think about:

• How long the business expects to keep the property
• The likely resale value
• Future income
• State depreciation adjustments
• Whether an election out should be considered

An election out generally applies to an entire class of property placed in service during the year. It also needs to be made correctly and on time.

IRSProb’s guide to depreciation recapture and installment sales explains why the tax result from a later sale may surprise business owners.

Bonus depreciation can still be a useful tool. The point is to look beyond the first-year deduction.

What Happens When Bonus Depreciation Does Not Apply

If bonus depreciation is not available, the purchase may still provide a tax deduction.

Section 179 may be an option if the property and the business meet the requirements.

Regular MACRS depreciation may allow the business to recover the cost over several years.

In some cases, part of the purchase may qualify even when the entire cost does not. Business-use percentages, vehicle limits, mixed-use property, and improvements can all affect the final calculation.

Do not estimate the deduction based only on the purchase price.

Build the depreciation schedule using the actual property type, tax basis, business use, placed-in-service date, and available elections.

What Business Owners Should Review Before Signing the Deal

Before buying equipment, review the full transaction.

Ask:

• What exactly is the business buying?
• Is it depreciable business property?
• Is it new or used?
• Who is selling it?
• When will it be delivered?
• When will it be installed and ready for use?
• How much will it be used for business?
• Do vehicle or listed-property limits apply?
• Should Section 179 be considered?
• Would regular depreciation provide a better result?
• How will the deduction affect future tax years?
• What happens if the property is sold?
• Does the state follow the federal rule?
• Are the purchase and usage records complete?

The deduction should support a good business decision. It should not be the only reason for making the purchase.

Records Business Owners Should Keep

Keep a clear file for each major asset.

That file may include:

• Purchase agreement
• Final invoice
• Financing documents
• Proof of payment
• Delivery records
• Installation records
• Placed-in-service date
• Asset description
• Serial number
• Business-use records
• Mileage logs
• Depreciation schedule
• Form 4562
• Sale or disposal records

IRSProb’s guide to small-business audit records explains why these documents matter if the deduction is questioned later.

What to Do If Bonus Depreciation Was Claimed Incorrectly

Start with the original records.

Confirm:

• Acquisition date
• Placed-in-service date
• Property type
• Depreciable basis
• Business-use percentage

Then compare the tax return with Form 4562 and the depreciation schedule.

The correction may involve an amended return. In other situations, a depreciation error may require an accounting-method change.

The right fix depends on what happened and how long the incorrect treatment has been used.

Do not assume every depreciation mistake is corrected the same way.

If the IRS asks for support, review the notice, tax year, requested documents, and response deadline. IRSProb’s guide to an IRS audit letter can help with the first review.

When Business Owners Should Get Professional Help

Professional review may be useful when the purchase involves:

• A large amount of money
• A vehicle with personal use
• Used property from a related party
• Equipment purchased in one year and installed in another
• Real-property improvements
• Qualified production property
• State depreciation adjustments
• A later sale involving recapture
• An incorrect Form 4562 or depreciation schedule

The best time to ask is before signing the agreement or placing the property in service.

FAQs About Bonus Depreciation 2026

What to Do Next

Before signing an equipment deal, make sure the purchase works for the business even without the deduction.

Then confirm what the property is, when it will be ready for use, how much it will be used for business, and whether bonus depreciation, Section 179, or regular depreciation fits the broader tax plan.

For practical help reviewing an equipment purchase, depreciation issue, or IRS notice, start at IRSProb.com.

The goal is not to chase the biggest write-off. The goal is to make a sound purchase and report it correctly.

Disclaimer