“…Since our focus is on the collateral framework, we employ a financial friction that restricts leverage rather than external financing as in the canonical financial accelerator model ofBernanke et al (1999).3 Collateral premia on corporate bonds have been documented byMésonnier et al (2020),Pelizzon et al (2020), andMota (2020) Kaldorf and Wicknig (2021). provide a structural analysis of collateral premia and corporate default risk.4 Preferential treatment can take the form of relaxed eligibility requirements, reduced haircuts on eligible green bonds, or a combination of both.…”