State and local governments frequently offer tax incentives to attract businesses to locate in their area. Proponents view these incentives as a valuable tool to encourage economic development. Critics, on the other hand, argue either that incentives have little effect on business location decisions—and hence are wasteful giveaways—or that their benefits come at the expense of reduced economic activity in other areas. A key element in this debate is distinguishing what is best from a local versus a national perspective.