Publication Details
Issue: Vol 3, No 2 (2026)
Pages: 43-59
ISSN: 3032-1298

Abstract

Objective: This research examines the legal effects and implementation mechanisms of judgments declaring tax legislation unconstitutional, with particular emphasis on the binding force of constitutional judicial decisions, their temporal effects, and their implications for taxpayers, public finances, and the principle of constitutional supremacy. Method: The study addresses the distinction between judgments rejecting constitutional challenges on formal or substantive grounds and judgments declaring tax provisions unconstitutional. It explores the differing legal perspectives concerning the authority of such judgments, particularly the debate over whether judgments rejecting constitutional challenges should possess absolute or relative binding force. Furthermore, the study investigates the temporal effects of judgments declaring tax legislation unconstitutional, focusing on the distinction between immediate and retroactive effects. It examines the Iraqi legal framework and compares it with the Egyptian constitutional and tax legislation framework, particularly concerning the protection of taxpayers’ rights and the financial interests of the State. It also discusses the legal consequences of repealing unconstitutional tax provisions, including the possibility of extending the effect of unconstitutionality to interconnected provisions that cannot be separated from the provision declared unconstitutional. Results: The research argues that judgments declaring tax legislation unconstitutional possess absolute authority due to their legal consequence of repealing the unconstitutional provision and removing its legislative force, whereas judgments rejecting constitutional challenges should generally have relative authority, thereby allowing the same provision to be challenged again when the relevant procedural conditions are fulfilled or when the grounds of challenge or constitutional circumstances change. The research highlights the absence of sufficiently explicit legislative regulation in Iraq regarding the consequences and temporal application of judgments declaring tax legislation unconstitutional, which creates legal uncertainty concerning the recovery of taxes previously paid and the extent to which such judgments benefit taxpayers who were not parties to the original proceedings. The study concludes that regulating the effects of constitutional judgments requires a clear legislative framework that balances constitutional legality, tax justice, equality before taxation, the protection of acquired rights, and the stability of public finances. Novelty: It recommends amending the legislation governing the Federal Supreme Court to establish explicit provisions concerning the effects of judgments declaring tax legislation unconstitutional, including the regulation of retroactive effect, the possibility of renewed constitutional challenges, and the obligation of the legislative authority to amend or replace unconstitutional provisions within a specified period. The research further proposes granting the Federal Supreme Court authority to examine the constitutionality of relevant tax provisions ex officio, in order to strengthen constitutional review, protect taxpayers’ rights, and ensure the effective enforcement of constitutional principles.

Keywords
Constitutional Judiciary Unconstitutionality of Tax Legislation Constitutional Judgments Tax Law Retroactive Effect Immediate Effect Constitutional Review Taxpayers’ Rights Iraqi Law