Yellen Won a Global Tax Deal. Now Comes the Hard Part.

The Treasury secretary worked with finance ministers from the G7 to win support for a global minimum tax. But selling the idea to Republican lawmakers will not be easy.

Treasury Secretary Janet L. Yellen secured a landmark international tax agreement over the weekend, one that has eluded the United States for nearly a decade. But with a narrowly divided Congress and resistance from Republicans and business groups mounting, closing the deal at home may be an even bigger challenge. The Biden administration is counting on more than $3 trillion in tax increases on corporations and wealthy Americans to help pay for its ambitious jobs and infrastructure proposals. Republicans have expressed opposition to any rise in taxes and have warned that President Biden’s big spending plans are fueling inflation and will deter business investment. Business groups have complained that higher taxes pose a threat to the economic recovery and will put American companies at a competitive disadvantage. Persuading members of the Group of 7 advanced economies to agree on Saturday to a global minimum tax of at least 15 percent was intended to help the Biden administration win support for its U.S. tax increases. If enacted, the global minimum tax would require that companies pay at least a 15 percent tax on income, regardless of where they are based, making it less advantageous to relocate operations to countries with lower tax rates.