碳风险与审计定价的“波特假说之谜”——基于《巴黎协定》的经验证据

The Porter Hypothesis Under Carbon Risk and Audit Pricing——Evidence based on the Paris Agreement

本文以2016年我国签署全球气候变化新协议——《巴黎协定》为背景,采用双重差分法研究碳风险对审计定价的影响。研究发现,《巴黎协定》这一强碳监管信号释放后,相比于低碳排放企业,高碳排放企业的审计费用显著下降。进一步机制检验发现,绿色转型是影响碳风险降低审计费用的作用机制。此外,对于民营企业和内控质量高的企业,碳风险与审计费用的负向关系更加显著。上述研究结论表明,审计师在做出审计定价决策时考虑了碳风险下企业绿色转型因素的影响。本文的研究结论丰富了碳风险与审计定价的相关研究,并为强化审计监督赋能绿色发展、助力双碳目标的实现提供理论依据与经验参考。

As China signed a new global climate change agreement,namely the Paris Agreement in 2016,this paper uses the DID to study the impact of carbon risk on audit pricing.The study finds that after the Paris Agreement,a strong signal of carbon regulation,the audit fees of high-carbon emitting companies decrease significantly compared with those of low-carbon emitting companies.Further mechanical test shows that green transition is the mechanism causing audit fees reduction due to carbon risk.In addition,for private firms and high ICQ firms,the negative relationship between carbon risk and audit fees is more significant.The research conclusions show that auditors consider the impact of corporate green transition factors under carbon risk when making audit decisions.The research conclusions of this paper enrich the relevant research on carbon risk and audit pricing,and provide theoretical basis and experience reference for strengthening audit oversight,empowering green development and facilitating the realization of dual carbon goals.