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.

Per capita earnings in Arizona has been lower than the national average for decades. The 2011 differential of 19 percent is the largest on record; the typical differential has been between 10 and 15 percent. Thus, for residents who have spent some or all of their working life in the state, the state’s historically low per capita earnings help to explain the state’s below-average per capita property income.