By introducing operating inflexibility into the standard capital structural model, we build a two-regime model to show that the negative relation between profitability and financial leverage is not evidence against the trade-off model. Whereas firms increase their contractual operating costs...

Operating leverage increases profitability and reduces optimal financial leverage. Thus, operating leverage generates a negative relation between profitability and financial leverage that is thought to be inconsistent with the trade-off theory, but is commonly observed in the data. We...