Treasury Secretary Janet Yellen proposed implementing a global minimum corporate tax rate during discussions about increasing U.S. corporate taxes to support President Biden’s infrastructure spending plan.

The Core Argument

Yellen’s proposal aimed to address a fundamental economic problem: if America raised its corporate tax rate from 21% to 28%, companies might relocate offshore to jurisdictions with lower tax burdens. A coordinated global minimum would eliminate this incentive for relocation.

Key Considerations

The initiative targets primarily developed economies. The G7 maintains an average corporate tax rate around 24%, making coordination more feasible within that group. Expanding such standards to G20 nations would enable wealthy economies to characterize lower-tax jurisdictions as “predatory.”

The Central Tension

By pursuing international cooperation on taxes, Yellen essentially acknowledged that unilateral American action carried significant economic risks. The proposal represented an attempt to secure international assistance in supporting U.S. revenue goals—a notably ambitious diplomatic undertaking given many developing nations depend on competitive tax advantages for economic development.

The success of such negotiations remained uncertain, particularly among nations outside wealthy economic blocs.