Section 1231 Assets: Definition, Netting Rules, and Recapture

Section 1231 assets are depreciable property and real property used in a trade or business and held for more than one year. The tax code gives them a favorable split treatment: when the year’s gains and losses are netted together, a net gain is taxed at long-term capital gains rates (0%, 15%, or 20%), while a net loss is fully deductible as an ordinary loss with no annual cap. Depreciation recapture and a five-year lookback rule pull some of that benefit back, so the real tax picture has more layers than the headline rates suggest.¹

What Qualifies as a Section 1231 Asset

Three conditions have to be met. You have to hold the property for more than one year. It has to be used in your trade or business, not held personally or for speculation. And it has to be either depreciable property or real property used in the business.¹

That third point trips people up. Land doesn’t depreciate, but the statute names real property used in the business separately from depreciable property, so business land qualifies on its own. A parking lot your company owns and uses fits, even though you never claim depreciation on the dirt itself.

Types of Property That Count

The category is broader than most people assume, spanning heavy equipment through purchased goodwill.

Tangible Business Property

Machinery, manufacturing equipment, company vehicles, office furniture, and computers all qualify as depreciable personal property when used in a trade or business and held for over a year. These form the bulk of most Section 1231 transactions.

Real Property

Warehouses, office buildings, retail stores, factories, and the underlying land all count. Rental real estate generally qualifies too, as long as it’s held for income production rather than for sale to customers. A commercial building or residential rental owned and rented out for more than a year fits; a developer flipping houses doesn’t.

Section 197 Intangible Assets

Purchased intangibles amortized over 15 years under Section 197 are treated as depreciable property and qualify once held over a year.² This category covers:

Goodwill and going concern value acquired with a business
Customer lists, subscriber lists, and other information bases
Covenants not to compete entered into as part of a business acquisition
Purchased franchises, trademarks, and trade names
Transferable government licenses and permits acquired with a business

There’s a catch. Section 197 intangibles are treated as Section 1245 property, so any amortization you’ve deducted is recaptured as ordinary income when you sell. Only gain above your total amortization gets capital gains treatment through the Section 1231 netting.³

Natural Resources, Livestock, and Crops

Timber, coal, and domestic iron ore qualify when the owner retains an economic interest under Section 631. Livestock held for draft, breeding, dairy, or sporting purposes qualifies with specific holding periods: cattle and horses must be held at least 24 months, other qualifying livestock at least 12 months. Poultry is always excluded. Unharvested crops qualify only when sold together with the underlying land in a single transaction to the same buyer.¹

Property That Doesn’t Qualify

Several categories are excluded regardless of how long you own them.

Inventory and property held for sale. Anything sold to customers in the ordinary course of business generates ordinary income or loss. A car dealership’s lot is inventory, even though the same model would qualify as Section 1231 property if used as a company fleet vehicle for years.

Self-created intellectual property. Patents, inventions, models, designs, secret formulas, copyrights, literary compositions, musical works, and artistic creations are excluded when held by the creator or, in some cases, by someone who received them from the creator. The Tax Cuts and Jobs Act expanded this to cover self-created patents and inventions that previously could get capital asset treatment. A patent purchased from someone else as part of a business acquisition and amortized under Section 197 is a different story and can qualify.¹

Accounts receivable. Notes and accounts receivable from selling inventory or services don’t qualify. They represent ordinary revenue.

How Gains and Losses Are Netted

Section 1231 doesn’t look at each sale separately. You combine all Section 1231 gains and losses for the year, and the net result controls the character of the whole group. If gains exceed losses, the entire net amount is treated as a long-term capital gain. If losses exceed gains, the entire net amount is treated as an ordinary loss. Winners and losers aren’t split apart.¹

Net Gains at Capital Gains Rates

A net gain is taxed at 0%, 15%, or 20% depending on your taxable income. For 2026, the 15% rate begins above $49,450 for single filers and $98,900 for joint filers. The 20% rate applies once taxable income exceeds $545,500 (single) or $613,700 (joint).⁴ The top ordinary rate is 37%, so the savings on a large sale can be substantial.

Higher-income taxpayers should also account for the 3.8% net investment income tax. If modified adjusted gross income exceeds $200,000 (single) or $250,000 (joint), gains from passive business property can face an effective top rate of 23.8%.⁵

Net Losses as Ordinary Losses

A net loss is deducted as an ordinary loss, with no annual dollar cap. That’s a meaningful edge over capital losses, which are limited to $3,000 per year against ordinary income with the excess carried forward.⁶ A $50,000 net Section 1231 loss offsets $50,000 of wages, business income, or any other ordinary income in the year it occurs.

Depreciation Recapture Comes First

Before any gain enters the Section 1231 netting, depreciation recapture takes its cut. This is where the tax savings often shrink.

Section 1245: Equipment and Intangibles

On the sale of depreciable personal property at a gain, every dollar of prior depreciation is recaptured as ordinary income. The recapture amount is the lesser of total gain or total depreciation (or amortization) claimed.⁷ This covers equipment, machinery, vehicles, and Section 197 intangibles.

In practice, Section 1245 recapture often swallows the whole gain on personal property. Buy a machine for $100,000, depreciate it to $20,000, sell for $90,000: the $70,000 gain is entirely recaptured as ordinary income, because it doesn’t exceed the $80,000 in prior depreciation. Only gain above original cost flows into Section 1231 netting for potential capital gains treatment, which rarely happens with equipment.

Section 1250: Real Property

Real property gets friendlier treatment. For buildings placed in service after 1986, Section 1250 recapture applies only to depreciation claimed in excess of straight-line. Since post-1986 buildings almost universally use straight-line, there’s usually no traditional Section 1250 recapture.

Instead, the portion of gain attributable to straight-line depreciation is taxed as “unrecaptured Section 1250 gain” at a maximum rate of 25%.⁶ Gain above total depreciation enters the Section 1231 netting for standard capital gains rates.

An example: buy an office building for $500,000, claim $100,000 in straight-line depreciation (adjusted basis $400,000), sell for $600,000. Total gain is $200,000. The first $100,000 is taxed at up to 25%. The remaining $100,000 enters Section 1231 netting.

The Five-Year Lookback Rule

Congress added a guardrail against alternating ordinary loss years with capital gain years. Under Section 1231(c), when you have a net Section 1231 gain in the current year, you look back five tax years. Any net Section 1231 losses in that window that reduced your ordinary income cause the current year’s gain to be recharacterized as ordinary income up to the amount of those prior losses. Only gain above the unrecaptured losses gets capital gains treatment.¹

Say you reported a $5,000 net Section 1231 loss three years ago that reduced your ordinary income. This year you have a $12,000 net Section 1231 gain. The first $5,000 is taxed as ordinary income to reverse the earlier benefit. The remaining $7,000 qualifies for capital gains rates.

The lookback is easy to overlook during planning. If you’re timing a sale to land in a year with favorable rates, check whether you had Section 1231 losses in any of the prior five years. Those losses eat into your capital gain treatment dollar for dollar.

Where to Report It

Section 1231 sales are reported on Form 4797, not directly on Schedule D. The form has three parts, and the entry point depends on the transaction.⁸

Part III is where you start if the property is subject to Section 1245 or 1250 recapture. You calculate recapture here, report it as ordinary income, and move any remaining gain to Part I.
Part I holds the Section 1231 transactions that don’t need Part III treatment. The annual netting happens here. A net gain flows to Schedule D as a long-term capital gain.
Part II covers ordinary gains and losses from property held one year or less and other items that don’t belong in Part I or III.

A net loss from Part I goes directly to Form 1040 as an ordinary deduction rather than through Schedule D. A net gain flows to Schedule D after the lookback rule is applied.

Involuntary Conversions

Property destroyed by fire, storm, or theft, or taken through condemnation, can trigger a Section 1231 transaction if the insurance proceeds or condemnation award exceed your adjusted basis. You may be able to defer the gain entirely under Section 1033 by reinvesting the proceeds in similar property. The gain is postponed until you eventually sell the replacement in a taxable transaction, and your basis carries over from the original asset.⁹ The deferral can matter a great deal after a catastrophic loss, when an unexpected tax bill would compound the damage.

1
Office of the Law Revision Counsel. 26 USC 1231 – Property Used in the Trade or Business and Involuntary Conversions
2
Office of the Law Revision Counsel. 26 USC 197 – Amortization of Goodwill and Certain Other Intangibles
3
Internal Revenue Service. Publication 544, Sales and Other Dispositions of Assets
4
Tax Foundation. 2026 Tax Brackets and Federal Income Tax Rates
5
Internal Revenue Service. Topic No. 559, Net Investment Income Tax
6
Internal Revenue Service. Topic No. 409, Capital Gains and Losses
7
Office of the Law Revision Counsel. 26 USC 1245 – Gain From Dispositions of Certain Depreciable Property
8
Internal Revenue Service. Instructions for Form 4797
9
Internal Revenue Service. Involuntary Conversions: Real Estate Tax Tips