Definition
"Business" is a broad, context-sensitive legal term used across virtually every field of law. At its most general, it refers to any activity that occupies a person's time, attention, and labor for the purpose of livelihood or profit. Courts and legislatures have consistently resisted narrow definitions, recognizing that the term must flex to serve the statute or common law rule in which it appears. Several working definitions emerge from legal usage:
1. General commercial or occupational activity. Any lawful pursuit carried on for profit, including trade, commerce, professional services, and employment. This is the baseline meaning used in licensing statutes, zoning ordinances, and general commercial law.
2. A legal entity or enterprise. A discrete commercial organization — a sole proprietorship, partnership, corporation, or LLC — through which economic activity is conducted. This meaning governs business formation law, corporate law, and entity taxation.
3. Engagement in a regulated activity. In regulatory and tax contexts, "business" often requires regularity and continuity of activity. A single isolated transaction generally does not constitute a "business" for purposes of licensing, taxation, or liability under statutes that regulate persons "engaged in" or "carrying on" a business.
4. The subject matter of a legal proceeding or meeting. In procedural contexts — particularly parliamentary law and corporate governance — "business" means the matters properly before a body for consideration and action.
Common Language
Modern common usage (Wiktionary): A specific commercial enterprise or establishment; a person's occupation, work, or trade; commercial, industrial, or professional activity; or more generally, any particular situation or activity.
Historical common usage (Webster's 1913): That which busies one, or that which engages the time, attention, or labor of any one, as his principal concern or interest; any particular occupation or employment engaged in for livelihood or gain.
The common and legal meanings are closely aligned in their core sense, but law diverges in one critical respect: ordinary speech treats "business" as inherently ongoing, but in legal contexts the question of whether a single act or transaction constitutes "a business" — triggering regulatory requirements, tax consequences, or liability — is frequently contested and highly jurisdiction-specific. The legal issue is not what a business is, but when an activity rises to the level of one.
Common Confusion
Business vs. occupation vs. trade vs. profession. These terms are sometimes used interchangeably in common speech and even in older statutes, but legal instruments — particularly tax codes, licensing regimes, and professional regulation — often treat them as distinct categories. "Trade or business" is a term of art in federal tax law that carries a specific, judicially developed meaning. "Profession" may be separately regulated and may exclude or include certain legal protections not available to "business" activity generally. Researchers should confirm which term a specific statute or jurisdiction uses and not assume equivalence.
Why It Matters in Research
The central research trap with "business" is definitional slippage across legal contexts. A term that qualifies as a "business" for zoning purposes may not qualify as a "trade or business" for federal tax deduction purposes, and may not constitute "engaging in business" for state licensing purposes. The same word appears in thousands of statutes with no uniform meaning.
Key navigational points:
Regulatory and licensing contexts. Most licensing statutes require that an activity be conducted with regularity and continuity to constitute "doing business" or "carrying on a business." The single-act rule — that one transaction does not make a business — appears consistently in the historical sources and survives in modern law, but the threshold for what constitutes sufficient regularity varies by jurisdiction and statutory purpose.
Tax research. "Trade or business" in federal tax law is a specific compound term governed by a body of IRS guidance and judicial decisions distinct from the general meaning of "business." Qualified Business Income deduction rules and the trade-or-business expense deduction rules each layer additional requirements. Researchers should not import the general legal definition into tax analysis without checking the specific tax-law meaning.
Corporate and entity law. When "business" refers to a legal entity, the research question shifts to formation, governance, liability, and dissolution — a distinct body of law from regulatory or tax analysis.
Historical sources. Older case law and the historical dictionaries define "business" almost exclusively in terms of individual commercial activity for livelihood or profit. They do not anticipate the modern regulatory state, entity taxation, or the complex business-form landscape. Definitions found in 19th-century sources are useful for common-law background but should not be applied to modern statutory contexts without caution.
Business valuation. In family law and closely held business contexts, "business" takes on additional meaning in the valuation context — particularly the distinction between marital and separate property interests in a business, and the treatment of goodwill.
Historical Dictionary Support
The historical dictionaries are in close agreement on the core definition. Black's (both editions) and Bouvier's converge on the formulation that business is "that which occupies the time, attention, and labor of men for the purpose of a livelihood or profit." All three sources share the single-act rule: a single transaction pertaining to a particular business does not constitute engaging in or carrying on that business, but a series of such acts would. This distinction was litigated extensively in 19th-century tax and licensing cases and remains embedded in modern regulatory law.
Black's (1st Ed.) adds a broader framing — that the word "embraces everything about which a person can be employed" — which signals judicial reluctance to limit the term's scope by definition. Courts have consistently followed this expansive approach when construing general enabling statutes, and a narrower approach when construing penalty or licensing provisions.
Anderson's Dictionary of Law, as reproduced in the available source material, does not contribute a direct entry on "business" — the excerpt addresses breaking and entering. Researchers should treat Anderson's as a supplementary, not primary, source for this term.
The historical sources do not address business entities as legal persons, business taxation as a distinct field, or any of the regulatory frameworks that dominate modern business law. Their definitions are useful for establishing the common-law baseline but are incomplete for contemporary research purposes.
Jurisdictional Note
What constitutes "doing business" or "transacting business" in a state for purposes of foreign entity registration, jurisdiction, or taxation varies significantly by state. Many states have enacted specific statutory definitions — often tied to uniform acts — that differ from the common-law baseline. Federal tax law's "trade or business" standard is a separate analysis that does not track state definitions.
Encyclopedia Cross-Reference
The Law Mind Tax Encyclopedia: Deductions — Trade or Business Expenses (tax_40); Deductions — Qualified Business Income (tax_36)
The Law Mind Family Law Encyclopedia: Marital Property — Business Valuation and Division of Closely Held Businesses (family_33)