王磊, 王璐瑶, 林晚发. 威慑与激励并行:税制绿色化对重污染企业债券信用利差的影响研究J. 证券市场导报, 2026, (3): 51-66.
引用本文: 王磊, 王璐瑶, 林晚发. 威慑与激励并行:税制绿色化对重污染企业债券信用利差的影响研究J. 证券市场导报, 2026, (3): 51-66.
Wang Lei, Wang Luyao, Lin Wanfa. Deterrence and Incentive in Tandem: The Impact of Green Tax System on Bond Credit Spreads of Heavily Polluting EnterprisesJ. Securities Market Herald, 2026, (3): 51-66.
Citation: Wang Lei, Wang Luyao, Lin Wanfa. Deterrence and Incentive in Tandem: The Impact of Green Tax System on Bond Credit Spreads of Heavily Polluting EnterprisesJ. Securities Market Herald, 2026, (3): 51-66.

威慑与激励并行:税制绿色化对重污染企业债券信用利差的影响研究

Deterrence and Incentive in Tandem: The Impact of Green Tax System on Bond Credit Spreads of Heavily Polluting Enterprises

  • 摘要: 《环境保护税法》在促进绿色低碳发展与生态文明建设方面发挥了重要作用,其对债券市场的影响值得深入研究。本文以《环境保护税法》实施为准自然实验,首次从“法律威慑—税收激励”双重视角,研究发现环保税改革显著降低了重污染企业的债券信用利差。一方面,环境监管执法体系更加独立、规范,提升了环境规制威慑力,重污染企业为规避高额罚款、停产整顿等严厉处罚,普遍采取系统性环境治理措施,显著降低了突发性现金流断裂风险;另一方面,差异化的税率设计和阶梯式减排税收优惠,提高了重污染企业参与环境治理的内生动力,实施循环化生产技术改造,持续提升环境绩效,开展高质量环境信息披露。二者共同作用,降低了投资者要求的风险溢价,推动了重污染企业的债券信用利差收窄。进一步分析发现,经营环境不确定削弱了环保税改革对债券信用利差的降低作用,而媒体关注则会强化该政策效应。此外,债券信用利差收窄为重污染企业提供了更宽松的资金环境,促进了企业增加技术改进型的绿色创新活动。本文为完善绿色税制、服务经济高质量发展提供了理论依据与政策启示。

     

    Abstract: The Environmental Protection Tax Law has played a significant role in promoting green and low-carbon development and ecological civilization construction, warranting in-depth investigation of its impact on bond markets. Using the implementation of the Environmental Protection Tax Law as a quasi-natural experiment, this study adopts, for the first time, a dual perspective of "legal deterrence-tax incentive" and finds that environmental tax reform significantly reduces bond credit spreads of heavily polluting enterprises. On one hand, a more independent and standardized environmental regulatory enforcement system has enhanced the deterrent effect of environmental regulations. To avoid severe penalties such as substantial fines and production shutdowns, heavily polluting enterprises have generally adopted systematic environmental governance measures, significantly reducing the risk of sudden cash flow disruptions. On the other hand, differentiated tax rate designs and tiered emission reduction tax incentives have strengthened the endogenous motivation of heavily polluting enterprises to participate in environmental governance, leading them to implement circular production technology upgrades, continuously improve environmental performance, and conduct high-quality environmental information disclosure. The combined effect of these mechanisms reduces the risk premium demanded by investors, thereby narrowing bond credit spreads for heavily polluting enterprises. Further analysis reveals that business environment uncertainty weakens the spread-reducing effect of environmental tax reform, while media attention amplifies this policy effect. Moreover, narrowed bond credit spreads provide heavily polluting enterprises with a more accommodative financing environment, promoting enterprises to increase technology-improvement-oriented green innovation activities. This study provides theoretical foundations and policy implications for improving the green tax system and serving high-quality economic development.

     

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