Business Incomes at the Top
讨论商业收入在顶层收入中占比大且增长快，分析税收政策如何影响企业组织形式和收入分配，尤其关注紧密持股和穿透型企业，并指出这对不平等测量和税收累进性研究有重要影响。
Business income constitutes a large and increasing share of income and wealth at the top of the distribution. We discuss how tax policy treats and shapes how businesses are organized and how they distribute economic gains to owners, with the focus on closely held and pass-through firms. These considerations influence whether and how labor and capital income is observed in economic data and feed into research controversies regarding the measurement of inequality and the progressivity of the tax code. We discuss the importance of these issues in the United States and highlight that limited evidence from other countries suggests that they are likely to be important elsewhere.