The recent Supreme Court decision in Moore v. United States has left a glimmer of possibility for the future implementation of a wealth tax, despite not addressing it directly. The ruling centered on the constitutionality of taxing undistributed income of controlled foreign corporations, thus sidestepping the broader question of whether income must be realized to be taxable. This decision might serve as a blueprint for future legislation.
The significance of income realization was first established in the 1920 case Eisner v. Macomber, which has long held that taxpayers should not be taxed on unrealized gains. Nonetheless, the Court’s decision avoided reconsidering Eisner’s core principles, focusing instead on whether the tax code’s attribution-of-income standards can be applied to controlled foreign corporations.
Although the ruling upheld the mandatory repatriation tax (MRT), it also alluded to existing tax provisions that already permit broad interpretations of realization. For instance, Section 475 and Section 1296 allow certain taxpayers to use mark-to-market methods, treating increases in the fair market value of assets as realizable.
In the practical arena, taxpayers hoping for relief from continued MRT payments now face disappointment. The decision implies that Congress could potentially pass legislation to treat unrealized gains as taxable under certain conditions, thus bringing the U.S. closer to a federal wealth tax.
Failure to overturn the MRT maintains the status quo, which has offered specific benefits to multinational corporations. These corporations have managed to use deemed-paid foreign tax credits efficiently, mitigating their tax liabilities on untaxed, accumulated earnings prior to the 2017 Tax Cut and Jobs Act.
The Moore ruling hints at the possibility for a future wealth tax, anchored by principles established under current tax regulations and judicial interpretations. Legal professionals and corporate tax planners should note the potential shift in tax policy, informed by this latest judgment.
The case is: Moore v. United States, U.S., 22-800, 6/20/24.