Definition
AGI is an initialism with two distinct legal and regulatory meanings:
1. ADJUSTED GROSS INCOME (tax law). A taxpayer's total gross income minus specific "above-the-line" deductions permitted by the Internal Revenue Code, calculated before itemized or standard deductions are applied. AGI serves as the baseline figure from which taxable income is derived and functions as a threshold or phase-out trigger for numerous tax credits, deductions, and eligibility determinations across federal and state tax law.
2. ARTIFICIAL GENERAL INTELLIGENCE (emerging technology law). A hypothetical or prospective class of machine intelligence capable of performing any intellectual task that a human can perform, at or above human level, across domains, without task-specific programming. As a legal term, AGI appears primarily in regulatory proposals, legislative findings, executive orders, and policy documents concerned with AI governance, liability frameworks, national security classifications, and the legal personhood debate. It does not yet carry a settled statutory definition in any major jurisdiction.
Common Language
Modern common usage (Wiktionary): Initialism of artificial general intelligence; initialism of adjusted gross income; initialism of agility point; initialism of auxiliary gathering intelligence.
Historical common usage (Webster's 1913): The term does not appear. The initialism postdates the dictionary entirely.
Editorial note: In general discourse, AGI is used almost exclusively to mean artificial general intelligence, particularly in technology journalism and policy commentary. In legal and tax research, however, AGI far more frequently means adjusted gross income — a precise statutory concept with decades of case law and regulatory guidance behind it. Researchers encountering AGI in a legal document must anchor the term to context before proceeding.
Common Confusion
The two primary legal meanings of AGI are unrelated and can create genuine misreading. A tax attorney and a technology policy attorney will read the same three letters and arrive at entirely different concepts. Additionally, AGI (artificial general intelligence) is frequently conflated with AI (artificial intelligence) broadly, or with ANI (artificial narrow intelligence) and ASI (artificial superintelligence) — distinctions that matter in regulatory documents that use tiered definitions. In emerging tech law, imprecise use of AGI where AI is meant, or vice versa, can affect how a regulatory provision's scope is interpreted.
Why It Matters in Research
Tax research: In federal tax materials, AGI is a load-bearing term. Phase-out thresholds for the child tax credit, earned income credit, Roth IRA contribution limits, medical expense deductions, and the alternative minimum tax all pivot on AGI. Researchers working with pre-1954 materials should note that the modern AGI framework was substantially shaped by the Internal Revenue Code of 1954 and has been repeatedly amended. Historical sources may use "net income" or "statutory net income" where modern sources use AGI; these are not equivalent.
Emerging technology law: AGI as an artificial general intelligence concept is almost entirely absent from binding legal authority as of the mid-2020s. Researchers will find the term primarily in white papers, executive branch policy documents, congressional testimony, and international regulatory proposals. Its legal meaning is contested and actively being negotiated. Any research relying on a definition of AGI in this context must identify the specific document providing that definition — there is no cross-jurisdictional consensus. The EU AI Act uses risk-based tiering but does not adopt the AGI/ANI distinction as a formal classification.
Corpus navigation: In the Law Mind corpus, search results for AGI will be dominated by tax materials. Researchers interested in AI governance should supplement with full-phrase searches ("artificial general intelligence") to avoid drowning in tax results.
Historical Dictionary Support
Burrill's Law Dictionary does not contain an entry for AGI. The entry reproduced in source materials under this heading is actually an excerpt from Burrill's entry on AGENT — included here because AGI is occasionally treated as a variant abbreviation for "agent" in older shorthand legal annotations, though this usage is rare and largely obsolete. Burrill notes that "agent is a nomen generalissimum" encompassing factors, brokers, attorneys, and deputies. This usage has no bearing on either modern meaning of AGI and should not be imported into contemporary research. Historical dictionaries across the shelf are silent on the initialism, which is unsurprising given that both dominant modern meanings postdate the classical dictionary period.
Jurisdictional Note
Adjusted gross income is a federal tax concept codified in the Internal Revenue Code; state income tax regimes vary in whether and how they incorporate the federal AGI figure, with some states conforming to federal AGI as a starting point and others computing an independent baseline. For artificial general intelligence, no jurisdiction has enacted a statutory definition of AGI as a binding legal standard as of this writing.