世界银行：有效税率、企业规模与全球最低税率（英文版）

This paper documents new facts on corporate taxation and the revenue potential of corporate minimum taxes, leveraging firm-level tax returns from 16 countries. First, effective tax rates follow a humped-shaped pattern with firm size: small firms benefit from reduced rates, while large firms take up tax incentives, leaving mid-sized firms with the highest effective rates. On average, the effective tax rate for the largest 1 percent of firms is 2.2 percentage points lower than the average effec