A capital asset, in US federal tax law, is property held by the taxpayer, whether or not connected with a trade or business, other than the classes of property Internal Revenue Code Section 1221(a) expressly takes out. The definition is a negative one. It starts with everything the taxpayer owns, then removes named categories, so a capital asset is whatever survives the list. State and local government reporting uses the same two words for something else, a long-lived asset used in operations, and the two meanings overlap far less than the shared name suggests.
Section 1221(a) names eight numbered classes of property that are not capital assets (26 U.S.C. 1221(a)). The label decides character on disposition, because generally a sale or exchange of a capital asset produces a capital gain or loss (IRS, Publication 544 (2025)).
What Section 1221 Takes Out
Two exclusions do most of the work. The first is inventory, covering stock in trade, other property of a kind that would properly be included in inventory if on hand at the close of the taxable year, and property held primarily for sale to customers in the ordinary course of business. The second is the one that surprises people, because it removes property used in the trade or business of a character subject to the allowance for depreciation provided in section 167, and real property used in the trade or business (26 U.S.C. 1221(a)(1) and (a)(2)).
Self-created work comes out next. A patent, invention, model or design, a secret formula or process, a copyright, a literary, musical or artistic composition, a letter or memorandum, or similar property is not a capital asset in the hands of whoever created it by personal effort, whoever a letter or memorandum was prepared for, or anyone taking basis by reference to those. Trade receivables follow, because accounts or notes receivable acquired in the ordinary course of a trade or business for services rendered, or from the sale of the inventory-type property above, are excluded too (26 U.S.C. 1221(a)(3) and (a)(4)).
The remaining four are narrow. A United States Government publication is out where it was received other than by purchase at the price offered to the public. A commodities derivative financial instrument held by a commodities derivatives dealer is out unless it is established to the satisfaction of the Secretary that it has no connection to that dealer’s activities as a dealer and it is clearly identified as such in the dealer’s records before the close of the day it was acquired, originated or entered into. A hedging transaction is out when it is clearly identified as one in that same window. So are supplies of a type regularly used or consumed in the ordinary course of the taxpayer’s trade or business (26 U.S.C. 1221(a)(5) to (a)(8)).
What Counts as a Capital Asset
Almost everything a person owns and uses for personal purposes, pleasure or investment is a capital asset. The IRS names stocks and bonds, a home owned and occupied by the taxpayer and family, household furnishings, a car used for pleasure or commuting, coin or stamp collections, gems and jewelry, gold, silver and other metals, and timber grown on home or investment property (IRS, Publication 544 (2025)).
Capital Asset Versus Fixed Asset
These are usually not the same property, and the overlap most people assume runs backwards. A fixed asset is tangible, long-lived property held for use in operations, which is close to a description of what Section 1221(a)(2) removes, so a firm’s building, machinery and vehicles are ordinarily not capital assets for federal tax purposes (26 U.S.C. 1221(a)(2)). Fixed assets covers where those balances sit and how they are carried.
The exclusion does not soften as the asset ages. Real property and depreciable property used in a trade or business, or for the production of income, are not capital assets even if the property is fully depreciated, and section 197 intangibles fall inside the same exclusion (IRS, Publication 544 (2025)).
Capital Asset Versus Ordinary Asset
Ordinary asset is practitioner shorthand rather than a defined term. It names property whose sale produces ordinary income rather than capital gain, which on the statute’s own logic is just property the definition took out. The IRS’s own counterpart is noncapital asset, which it defines as property that is not a capital asset (IRS, Publication 544 (2025)).
Section 1231 is the bridge, and it is why the same machine can land on either side. Property used in the trade or business means property used in the trade or business, of a character subject to the allowance for depreciation provided in section 167, and real property used in the trade or business, each held for more than 1 year, less the inventory, property held primarily for sale to customers, self-created works and government publications the definition also names (26 U.S.C. 1231(b)(1)).
Character then turns on the year rather than on the asset. Where the section 1231 gains for a taxable year exceed the section 1231 losses, the gains and losses are treated as long-term capital gains or long-term capital losses, as the case may be, and where they do not exceed them, they are not treated as gains and losses from sales or exchanges of capital assets at all (26 U.S.C. 1231(a)(1) and (a)(2)).
What reaches that netting is only the part of a gain left after depreciation recapture has taken its ordinary slice first, and that mechanism is depreciation recapture.
The netting is not the last word. Net section 1231 gain is treated as ordinary income to the extent it does not exceed the non-recaptured net section 1231 losses, which are the aggregate net section 1231 losses of the 5 most recent preceding taxable years less the portion already recaptured (26 U.S.C. 1231(c)(1) and (c)(2)).
Capital Assets in Government Reporting
State and local governments run a different definition under the same name, and nothing in the federal tax exclusions reaches it. As used in that standard the term capital assets includes land, improvements to land, easements, buildings, building improvements, vehicles, machinery, equipment, works of art and historical treasures, infrastructure, and all other tangible or intangible assets that are used in operations and that have initial useful lives extending beyond a single reporting period (GASB Statement No. 34, paragraph 19).
That is close to what a business would call a fixed asset, which is the opposite of where the tax definition lands. Why general capital assets are not reported as assets in governmental funds at all is set out in expenditure.
A firm that wants the asset schedules and disposition workpapers behind these calls prepared by someone else can put a real block of that work through a trial task before anything client facing depends on it.
