Significant corporate tax reform was agreed upon by more than 140 nations in 2021, with implementation set for 2023 and beyond. Many people throughout the globe are discussing the possible effects of the Organization for Economic Cooperation and Development (OECD) planned adjustment to the global minimum tax (GMT) on their respective economies. The OECD has formulated a “two-pillar” scheme for international tax rules for 137 countries and regions within the overall framework. Pillar 2 is to set the tax rate at 15%, the world’s lowest corporate tax. The GMT is a reclassification of the taxing authority mechanism for the profits of multinational corporations, which has made significant adjustments to the global tax coordination and governance mechanism. People living in China and earning money from China must pay university fees, which are all of a nationality. Progressive rates ranging from 3 to 45% apply to the complete income. Therefore, taking the initiative in policy is crucial to address this challenge actively. This article makes an in-depth assessment and prediction of the impact of the GMT reform on China’s tax system and enterprises and proposes countermeasures. However, approximately 20% of the earnings can be exposed to the 15% tax rate that governments can apply. If the entire process is mixed in tandem, the tax rate equals 0.2%. Hence, an important amount of tax revenue can proceed down the drain. From the numerical outcomes, the minimum tax with jurisdictional blending was set at 12.5% under Pillar 2; the disparity between the sample’s top and lowest EATRs would decrease by 2.8% points.