What will it actually take to achieve global tax reform?
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Britain's Chancellor of the Exchequer Rishi Sunak, center, and U.S. Treasury Secretary Janet Yellen attend the first day of the G-7 finance ministers meeting in London on Friday.
The G-7 agreed to back a global minimum corporate tax rate of 15%. While the proposal faces an uphill battle that could last years, larger, advanced economies stand to benefit most.
An agreement by the G-7 to set minimum levels of corporate tax will need ratification by governments and, closer to home, faces an uphill battle in Congress.