Carbon emission regulation and corporate financing constraints: A quasi-natural experiment based on China’s carbon emissions trading mechanism

This study empirically investigates the impact of carbon emissions trading on corporate financing constraints using a difference-in-differences model. By compiling lists of emission-controlled enterprises from each pilot carbon market, this study demonstrates that carbon emissions trading significantly increases financing constraints for these enterprises. However, no significant regional or sectoral spillover effects are observed. The results of the mechanism testing show that carbon emissions trading diminishes enterprise performance in the stock market and exerts adverse effects on the scale of corporate bank borrowing and the debt maturity structure. Further research reveals that good corporate governance and better information quality can inhibit the adverse effects of carbon emissions trading. This mechanism reduces firms’ investment expenditures, but increases their investments in research and development and financial asset allocation. Notably, despite financing constraints being detrimental to innovation, carbon emissions trading significantly enhances both the level and quality of innovation in firms. These findings underscore the complex effects of carbon emissions trading on corporate financing constraints and highlight the intricate nature of environmental policies at the microeconomic level.