Moore v. United States

The Supreme Court upheld the Mandatory Repatriation Tax, a one-time tax on the earnings of foreign corporations owned by Americans. The Court ruled that Congress has the constitutional power to tax shareholders on income that a company has earned but not yet paid out. This decision confirms that the government can attribute a company's realized income to its owners for tax purposes.

This ruling prevents a massive disruption to the U.S. tax code that could have cost the government hundreds of billions of dollars in lost revenue. It specifically affects American investors who own significant stakes in foreign companies, ensuring they remain liable for taxes on those corporate earnings. If the tax had been struck down, it could have called many other parts of the federal tax system into question.

The case centered on the 16th Amendment and whether the government can tax income that hasn't been personally received or 'realized' by the taxpayer. It touched on long-standing debates about the limits of federal taxing power and how the law treats the relationship between corporations and their shareholders. The outcome avoids a major shift in how the United States taxes international business profits.

The Court issued a decision on June 20, 2024, upholding the tax as a valid exercise of Congress's taxing power under the 16th Amendment.

“Congress may attribute an entity’s realized and undistributed income to the entity’s shareholders or partners, and then tax the shareholders or partners on their portions of that income.”

The Supreme Court confirmed that Congress can tax shareholders on the undistributed earnings of foreign corporations they control.

Lower courts and federal agencies will now apply this ruling to other pending tax disputes involving similar corporate structures. Taxpayers affected by the Mandatory Repatriation Tax must continue to comply with the existing law as established by Congress. Observers will watch to see if this ruling encourages Congress to pass new types of taxes on accumulated wealth or unrealized gains.

The case challenged whether Congress could tax Americans on the earnings of foreign companies they own even if that money was not paid out. The plaintiffs argued this violated the Constitution because they had not personally received the income.

The federal government protects billions of dollars in tax revenue that had already been collected or assessed. American shareholders of foreign corporations remain responsible for paying the one-time repatriation tax.

The Court clarified that Congress has the authority under the 16th Amendment to attribute a company's realized income to its shareholders. This means the income does not have to be distributed to be taxable.

The case is now resolved, and lower courts will use this precedent to dismiss similar challenges to the tax law. Parties must monitor how the IRS continues to enforce these specific tax provisions.

The decision reflects the Court's reluctance to strike down major parts of the federal tax code. It maintains the status quo for how the U.S. government taxes international business earnings.