The transaction privilege tax (TPT), often referred to as the sales tax, is a major source of revenue for state and local governments in Arizona. The TPT is applied to numerous categories, such as contracting and utilities. The analysis in this paper is limited to the retail category, which accounts for half of the TPT collected by state government, and the restaurant and bar category, which contributes one-tenth of the TPT revenue.

For decades, Arizona was one of the national leaders in aggregate economic growth, as measured by the percent change in measures such as gross product and employment. However, its growth rate always has been highly cyclical. During expansionary periods, Arizona always has been among the top states on the rate of growth. During recessions, the Arizona economy generally slumped at a rate similar to the national average, but would experience a rapid recovery. This pattern continued through the economic expansion of the mid-2000s.