This article reviews the Tax study literature to assess the state of knowledge about the relationship among tares, related factors, and economic growth as well as the use of tar incentives to influence business locations. Although tar studies have become increasingly sophisticated, especially during the past decade, they have tended to yield conflicting results regarding whether taxes matter. Some studies focus an costs and benefits of tax incentives, but few look to see whether public monies could have been better spent or whether tar incentives were economically justified. Tax studies offer little guidance to policy makers concerned about fine-tuning tax rates or tax offerings and effectively employing tar incentives as economic development fools.