Previous studies that test the tradeoff theory commonly use one of the following debt ratio measures to proxy for a firm's hypothesized optimal ratio: firm's time-series mean leverage, moving average leverage based on a firm's historical debt ratios, industry median leverage, and predicted...

The median U.S. non-regulated firm reports a 47 percent decline in leverage ratio between 1980 and 2010. We investigate whether the cost-benefit tradeoff to shareholders, captured by the valuation impact of an additional dollar of debt on owners' equity, is an explanation for the observed change...