统计研究 ›› 2007, Vol. 24 ›› Issue (5): 29-35.

• 论文 • 上一篇    下一篇

提高工薪所得税免税额一定能降低收入不平等吗

洪兴建   

  1. 浙江工商大学统计学院
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-05-15 发布日期:2007-05-15

Will Elevation of Tax Exemption Necessarily Decrease Income Inequality

Hong Xingjian   

  • Received:1900-01-01 Revised:1900-01-01 Online:2007-05-15 Published:2007-05-15

摘要: 为了更好地发挥个人所得税调节收入分配的功能,中国新的工薪所得税免税额由原来的800元提高到1600元。本文首先着重研究了收入不平等测度中的基准收入,借助基准收入和免税额的各种位置关系,从理论上分析了提高免税额未必能降低不平等。最后,利用2004年中国176个细分行业的工薪数据和Gamma分布的特征,本文实证分析了免税额由800元提高到1600元后的收入不平等变化。实证结果表明,免税额提高后职工的收入不平等进一步扩大。

关键词: 工薪所得税, 收入不平等, 免税额, 基准收入

Abstract: In order to make personal income tax redistribute income more effectively, our personal wage tax exemption has increased from 800 Yuan to 1600 yuan. This paper studies the benchmark income in inequality measurement, and analyzes the relation between benchmark income and tax exemption. We demonstrate in theory that the elevation of tax exemption unnecessarily reduces income inequality. Using 176 detailed industries of China in 2004 and the character of Gamma distribution, we find that income inequality will rise when tax exemption increases from 800 yuan to 1600 yuan.


 

Key words: Wage Tax, Income Inequality, Tax Exemption, Benchmark Income