The responsibility of enhancing environmental quality is shouldered by China's Environmental Protection Tax (EPT), which constitutes a vital element of China's tax system greening initiative. Using the difference-in-differences (DID) method, the effects of the EPT on PM concentration were empirically examined in this study, through panel data of 218 cities in China from 2015 to 2021. The results indicate that the EPT can effectively reduce PM concentration by approximately 2.4 %, and this conclusion remained unchanged after a series of robustness tests. In the channel analysis, it can be found that the reduction of PM concentration by the EPT was achieved through the alleviation of financing constraints, technological advancements, and optimization of industrial structure. Heterogeneity analysis indicates that the negative impact of the EPT on PM concentration was more significant in northern cities, inland cities and non-national environmental protection model cities. Further analysis found that EPT has a stronger inhibitory effect on PM concentration within 100 % of tax increase. The conclusions remain consistent when spatial spillover effects of PM are taken into account. This paper provides important empirical evidence to support the effectiveness of emission reductions of EPT and provides valuable insights for the future improvement of EPT.
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| http://dx.doi.org/10.1016/j.scitotenv.2024.173499 | DOI Listing |
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