We examine the relation between customer concentration, a critically important aspect of a firm's business model, and the level of corporate tax avoidance. A firm with a concentrated corporate customer base needs to hold more cash, faces a higher likelihood of financial distress, has a stronger...

This paper argues that tax avoidance by large corporations has contributed to the 25% increase in concentration among U.S. firms since the mid-1990s. Corporate tax avoidance gives large firms a competitive edge, which translates into larger market shares and an increase in the granularity of the...