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Posted by Jim McClaflin, EA, NTPI Fellow, CTRC

Retroactive Tax Legislation & Its Constitutionality

Retroactive Tax Legislation & Its Constitutionality


Retroactive tax legislation is an issue that has been debated for a long time in the United States. Retroactive taxation occurs when the government imposes a new tax law that applies to transactions that have already occurred before the law's enactment. This type of legislation is controversial because it can be seen as unfair and unconstitutional. This article will explore the constitutionality of retroactive tax legislation and the recent developments in this area of tax law. 


The Constitutionality of Retroactive Tax Legislation

The constitutionality of retroactive tax legislation has been debated for many years. Some argue that retroactive taxation is unconstitutional because it violates the due process clause of the Fifth Amendment, which states that no person shall be deprived of life, liberty, or property without due process of law. Retroactive tax legislation can be seen as violating this clause because it imposes a tax on transactions that have already occurred without giving taxpayers an opportunity to adjust their behavior to avoid the tax. 

However, the Supreme Court has held that retroactive tax legislation is not always unconstitutional. In United States v. Carlton, the Supreme Court held that retroactive tax legislation is constitutional if it serves a legitimate legislative purpose and if the retroactive application of the legislation is not arbitrary or irrational. In Carlton, the court upheld the constitutionality of a retroactive tax law that eliminated a tax benefit that had been available to taxpayers for several years. The court held that the retroactive tax law was constitutional because it was enacted to close a loophole that had been used to avoid paying taxes and was not arbitrary or irrational. 

In subsequent cases, the Supreme Court has reaffirmed the Carlton decision and has held that retroactive tax legislation is constitutional if it serves a legitimate legislative purpose and if the retroactive application of the legislation is not arbitrary or irrational. However, the court has also emphasized that retroactive tax legislation must be subject to strict scrutiny and that the government must provide a compelling justification for the retroactive application of the legislation. 


Recent Developments in Retroactive Tax Legislation

In recent years, retroactive tax legislation has been a topic of discussion in the United States. In 2017, Congress passed the Tax Cuts and Jobs Act, which included several provisions that were retroactive to the beginning of the year. One of these provisions was the limitation on the state and local tax deduction, which limited the amount of state and local taxes that could be deducted on federal tax returns to $10,000. This provision was controversial because it was retroactive to the beginning of the year and was seen as targeting high-tax states such as New York, California, and New Jersey. 

In response to the limitation on the state and local tax deduction, several states passed legislation to circumvent the limitation by creating charitable contribution programs. These programs allow taxpayers to make charitable contributions to state and local governments and receive a tax credit in return, which could then be deducted from their federal tax returns. However, the Internal Revenue Service (IRS) issued a notice in 2018 stating that it would disallow these charitable contribution programs, stating that the contributions were not voluntary and that they were designed to circumvent the limitation on the state and local tax deduction. 

Several lawsuits were filed challenging the IRS's position, arguing that the disallowance of the charitable contribution programs was unconstitutional because it violated the Tenth Amendment, which reserves powers not delegated to the federal government to the states, and the due process clause of the Fifth Amendment. The lawsuits argued that the IRS's position was arbitrary and capricious and that it unfairly targeted high-tax states. 

In 2020, a federal district court in New York ruled in favor of the plaintiffs, holding that the IRS's position was arbitrary and capricious and that it violated the Tenth Amendment and the due process clause of the Fifth Amendment. The court held that the charitable contribution programs were a legitimate exercise of state power and that the IRS's disallowance of the programs was a violation of state sovereignty. The court also held that the disallowance of the programs was retroactive tax legislation that violated the due process clause of the Fifth Amendment. 

The IRS appealed the decision to the Second Circuit Court of Appeals, which heard oral arguments in January 2021. The Second Circuit has not yet issued a decision in the case, but it is expected to provide guidance on the constitutionality of retroactive tax legislation and the limits of federal power over state taxation. 


The Future of Retroactive Tax Legislation

The future of retroactive tax legislation is uncertain, but it is clear that the issue will continue to be debated and litigated in the coming years. The Supreme Court's decision in Carlton and its subsequent cases have provided some guidance on the constitutionality of retroactive tax legislation, but there is still much uncertainty about when retroactive tax legislation is appropriate and when it violates the due process clause of the Fifth Amendment. 

The recent litigation over the limitation on the state and local tax deduction and the charitable contribution programs highlights the tension between federal and state power over taxation and the potential for retroactive tax legislation to be used as a tool for political purposes. As tax policy continues to be a contentious issue in the United States, the retroactive tax legislation will likely continue to be a topic of discussion and controversy. 


Conclusion

Retroactive tax legislation is a complex issue that has been debated for many years. While the Supreme Court has provided some guidance on the constitutionality of retroactive tax legislation, there is still much uncertainty about when retroactive tax legislation is appropriate and when it violates the due process clause of the Fifth Amendment. 

The recent litigation over the limitation on the state and local tax deduction and the charitable contribution programs highlights the tension between federal and state power over taxation and the potential for retroactive tax legislation to be used as a tool for political purposes. 


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Jim McClaflin, EA, NTPI Fellow, CTRC
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