Idaho Code

Idaho Code § 63-3002 (2026)

Declaration of intent. 

✓ current as of May 2026
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Declaration of intent. 

It is the intent of the legislature by the adoption of this act, insofar as possible to make the provisions of the Idaho act identical to the provisions of the Federal Internal Revenue Code relating to the measurement of taxable income, to the end that the taxable income reported each taxable year by a taxpayer to the internal revenue service shall be the identical sum reported to this state, subject only to modifications contained in the Idaho law; to achieve this result by the application of the various provisions of the Federal Internal Revenue Code relating to the definition of income, exceptions therefrom, deductions (personal and otherwise), accounting methods, taxation of trusts, estates, partnerships and corporations, basis and other pertinent provisions to gross income as defined therein, resulting in an amount called "taxable income" in the Internal Revenue Code, and then to impose the provisions of this act thereon to derive a sum called "Idaho taxable income"; to impose a tax on residents of this state measured by Idaho taxable income wherever derived and on the Idaho taxable income of nonresidents which is the result of activity within or derived from sources within this state. All of the foregoing is subject to modifications in Idaho law including, without limitation, modifications applicable to unitary groups of corporations, which include corporations incorporated outside the United States.

Notes of Decisions
Cited in 21 cases (1 in the last 5 years), 1955–2022 · leading case: Bogner v. State Dept. of Revenue & Tax., 693 P.2d 1056 (Idaho 1984).
Bogner v. State Dept. of Revenue & Tax., 693 P.2d 1056 (Idaho 1984). · cites it 18× “While we find no evidence in the record that the Tax Commission was dilatory and unprepared, we do agree with the district court, however, that the Tax Commission has defended this case without foundation and unreasonably in misreading and misinterpreting I.”
J.R. Simplot Co., Inc. v. Idaho State Tax Comm'n, 820 P.2d 1206 (Idaho 1991). · cites it 12× “Accordingly, I.C. § 63-3002 in pertinent part states: It is the intent of the legislature by the adoption of this act, insofar as possible to make the provisions of the Idaho act identical to the provisions of the Federal Internal Revenue Code relating to the measurement of…”
Lockheed Martin Corp. v. Idaho State Tax Comm'n, 134 P.3d 641 (Idaho 2006). · cites it 6× “According to the Commission, Idaho Code § 63-3002 requires that we apply Section 460.”
Est. of Stahl v. Idaho State Tax Comm'n, 401 P.3d 136 (Idaho 2017). · cites it 4× “All of the foregoing is subject to modifications in Idaho law including, without limitation, modifications applicable to unitary groups of corporations, which include corporations incorporated outside the United States.”
Linda Dunn v. Idaho Tax Comm'n, 403 P.3d 309 (Idaho 2017). · cites it 12× “” I.C. § 63-3002. However, Idaho grants residents “a credit against the tax otherwise due under this chapter for the amount of any income tax imposed on the individual .”
Blangers v. Dept. of Revenue & Taxation, 763 P.2d 1052 (Idaho 1988). · cites it 12× “" I.C. § 63-3002. This intent has remained unchanged to date and was implemented by a provision imposing a tax "upon that part of the taxable income of any nonresident individual .”
Gee v. West, 409 P.2d 116 (Idaho 1965). · cites it 12× “Pertinent portions of the statutes involved are: I.C. § 63-3002 (1959, ch. 299, § 2, p. 616): "Declaration of intent.”
David v. Idaho State Tax Comm'n, 230 P.3d 734 (Idaho 2010). · cites it 8× “Idaho Code § 63-3002 states: It is the intent of the legislature by the adoption of this act, insofar as possible to make the provisions of the Idaho act identical to the provisions of the Federal Internal Revenue Code relating to the measurement of taxable income, to the end…”
Rincover v. State, Dep't of Fin., 976 P.2d 473 (Idaho 1999). · cites it 2× “§ 12-121 to Bogner’s case, the Court said: While we find no evidence in the record that the Tax Commission was dilatory and unprepared, we do agree with the district court, however, that the Tax Commission has defended this case without foundation and unreasonably in misreading…”
Magnuson v. Idaho State Tax Comm'n, 556 P.2d 1197 (Idaho 1976). · cites it 2× “5 This interpretation of the statute is consonant with the policy of the legislature expressed in I.C. § 63-3002 “to make the provisions of the Idaho act identical to the provisions of the federal internal revenue code relating to the measurement of taxable income, .”
Herndon v. West, 393 P.2d 35 (Idaho 1964). · cites it 2× “Q 63-3002 that the legislative intent is " * * * to impose a tax on residents of this state measured by taxable income wherever derived * * Taxpayer relies strongly upon the first part of I.C. § 63-3002, which states that it is the intent of the Legislature to make the Idaho…”
Potlatch Corp. v. Idaho State Tax Comm'n, 913 P.2d 1157 (Idaho 1996). · cites it 4× “e the provisions of the Idaho act identical to the provisions of the Federal Internal Revenue Code relating to the measurement of taxable income, to the end that the taxable income reported each taxable year by a taxpayer to the internal revenue service shall be the identical…”
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