Francesca Diluiso, Barbara Annicchiarico and Marco Carli

While climate change is often seen as a long-term concern, climate mitigation policies can have different short-term effects, since they affect the transmission mechanism of conventional macroeconomic shocks. In a new working paper, we show that cap-and-trade schemes lead to lower volatility in GDP and financial variables, and result in reduced welfare costs of the business cycle, when compared to the more widely known carbon taxes. As we find that these welfare differences are primarily driven by distortions in financial markets, we argue that countercyclical macroprudential regulation, even without any green-biased component, can effectively align the welfare performance of these policies and mitigate their short-run costs.