Debt covenants are pervasive in debt contracts. To prevent the dilution of existing debt, most creditors set covenants of a maximum debt-to-earnings ratio for borrowing firms. In this paper, we embed debt covenants into a workhorse real business cycle model with defaultable debt to study its macroeconomic implications. In our model, creditors penalize firms when debt covenants are violated. We show such a mechanism that covenants significantly reduce debt dilution and default over the business cycles. Furthermore, reduced debt dilution due to debt covenants also mitigates the debt overhang problem and thus boosts capital accumulation. Compared to counterfactual economies without covenants, the baseline economy with debt covenants experiences endogenous stabilization of macroeconomic shocks and higher levels of capital, output, and consumption.

This paper studies the optimal contracting problem between shareholders and the agent in a general cash-ow setup, and offers a framework to quantitatively assess the impact of agency problems. Under the structural model of capital structure studied in Leland (1994), we solve the optimal employment contract explicitly, and nd that debt-overhang lowers the optimal leverage. Consistent with the data, our model delivers a negative relation between pay-performance sensitivity and rm size, and the interaction between debt-overhang and agency issue leads smaller rms to take less leverage relative to their larger peers. During nancial distress, a rm’s cash-ow becomes more sensitive to underlying performance shocks due to debt-overhang. We also consider the possibility of debt covenants to alleviate the debt-hang problem.