Arizona

Cohen v. United States in Arizona Law

How Cohen v. United States applies in Arizona: state-specific rules, key cases, and bar exam notes for Tax Law.

State Approach

Arizona generally follows federal taxation principles, but with specific state-level variations in revenue statutes and tax liabilities. The state recognizes the importance of 'domicile' for tax residency determinations, mirroring the federal rationale in Cohen v. United States regarding income taxation.

State Rule
In Arizona, income earned by residents is taxable, and the state employs a similar doctrine to the federal approach, where residency and domicile are pivotal in determining taxable income.
Significant State Cases

Mayer v. Arizona Department of Revenue

Held that the determination of residency for tax purposes must consider both physical presence and intent.

Cortez v. Arizona Department of Revenue

Established that income earned out of state may still be taxable based on the taxpayer's residency status.

Harris v. Arizona Department of Revenue

Clarified the burden of proof for establishing domicile in tax disputes.

Comparison to Federal Law

Arizona's approach closely mirrors the federal standards set in Cohen v. United States, particularly in assessing tax liability based on residency and the source of income. However, Arizona also has distinct administrative processes and statutes that govern how these principles are enforced at the state level.

Bar Exam Note

Cohen v. United States principles are frequently tested regarding concepts of residency and taxable income in the Arizona bar exam, particularly in tax law sections.

Practice Pointers
  • Always assess the taxpayer's domicile to determine tax residency accurately.
  • Review both federal and state tax laws when advising clients on income earned within and outside of Arizona.
  • Be mindful of the burden of proof in residency disputes and document all relevant factors.
  • Stay updated on any changes in state tax regulations that may affect income classifications.
  • Consult Arizona Department of Revenue rulings to ensure compliance with state-specific interpretations.

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