Idaho Administrative Code
Title IDAPA 35 - Tax Commission, State
Rule 35.01.01 - INCOME TAX ADMINISTRATIVE RULES
Section 35.01.01.015 - INTERNAL REVENUE CODE

01. Interpretations. Interpretations of the Internal Revenue Code may be found in various sources. These sources include decisions of the Tax Court, Congressional Committee Reports, General Counsel Memoranda, Decisions of the Federal and State Courts on federal income tax issues and Treasury Regulations. These interpretations are adopted by this reference to the extent that they are not in conflict with or inconsistent with the Idaho Code or administrative rules.

02. Retroactive Amendments. For the purpose of determining federal taxable income, any retroactive amendments to the Internal Revenue Code that are enacted on or before the date found in Section 63-3004, Idaho Code, are applied retroactively to the extent allowed under federal law.

03. Tax Commission Granted Discretion in Determining Correctness of Tax Return. Discretion granted to the Secretary of the Treasury to determine or reallocate items of income or adjustments to income, deductions, expenses, credits or other subjects of taxation by the Internal Revenue Code may also be exercised by the Tax Commission and its authorized agents, employees and deputies to enforce and administer the Idaho Income Tax Act and these rules.