Rapid growth in e-commerce has altered the ability of jurisdictions to enforce commodity taxes on a destination basis. This results in different effective tax rates depending on the way in which goods and services are purchased and the characteristics of both the products and the sellers. We...

The U.S. Supreme Court decision in the landmark 2018 Wayfair case greatly improved state governments' ability to enforce collection of sales taxes on a destination basis. This has reduced state tax competition with an essentially-untaxed internet, but has brought traditional cross-border...

Competition at the subnational level concerns how jurisdictions set tax, spending, or regulatory policies while accounting for the fact that these policies affect the locations of individuals, firms and mobile factors. This paper highlights the importance of studying subnational competition and...