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<p>This study investigates how the stringent administration of taxes resulting from the Chinese corporate income tax collection reform (the 2002 CITC Reform) affects the intensity of the discharge of pollution by firms. The 2002 CITC Reform, launched on 1 January 2002, required state tax bureaus (STBs) to start collecting income tax from firms incorporated on and after 1 January 2002, while the income tax from firms incorporated before this date is still collected by local tax bureaus (LTBs). Leveraging a Regression Discontinuity Design, we reveal that newly established firms strategically responded to the reform with high levels of wastewater and sulphur dioxide (SO<sub>2</sub>) emissions. The main finding is robust to a battery of robustness tests. Cross-sectional tests demonstrate that the discontinuity in pollution discharge among the firms whose taxes are managed by STBs is more pronounced among non-state-owned enterprises and firms located in provinces with less strict environmental regulations. Collectively, the findings suggest an unintended spill-over effect of the government’s tax policy on the environment.</p>

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Spill-Over Effect of Tax Policy on the Environment: Evidence from Regression Discontinuity Design

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  • 出版模式：

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  • 发表日期：

    2025年6月2日

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  • Dingwen Wu,
  • Hongjian Wang,
  • Haiyan Jiang,
  • Carl Hsin-Han Shen

摘要

This study investigates how the stringent administration of taxes resulting from the Chinese corporate income tax collection reform (the 2002 CITC Reform) affects the intensity of the discharge of pollution by firms. The 2002 CITC Reform, launched on 1 January 2002, required state tax bureaus (STBs) to start collecting income tax from firms incorporated on and after 1 January 2002, while the income tax from firms incorporated before this date is still collected by local tax bureaus (LTBs). Leveraging a Regression Discontinuity Design, we reveal that newly established firms strategically responded to the reform with high levels of wastewater and sulphur dioxide (SO2) emissions. The main finding is robust to a battery of robustness tests. Cross-sectional tests demonstrate that the discontinuity in pollution discharge among the firms whose taxes are managed by STBs is more pronounced among non-state-owned enterprises and firms located in provinces with less strict environmental regulations. Collectively, the findings suggest an unintended spill-over effect of the government’s tax policy on the environment.