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.

The war on poverty during the 1960s succeeded, cutting the national poverty rate in half by the early 1970s. Since then, however, the poverty rate of Americans under the age of 65 has increased. The poverty rate has climbed particularly among children; compared to an average of 15.5 percent during the 1971-to-1975 economic cycle, the poverty rate in each of the three cycles since 1982 averaged between 18 percent and 21 percent. One-in-five children lives in poverty and Arizona has consistently experienced higher poverty rates than the national average for all age groups except seniors.