The Phoenix Parks and Preserve Initiative (PPPI or 3PI) was established by Phoenix voters in 1999 to set aside one cent of sales tax for every $10 of purchases to improve and renovate existing parks, and to expand and improve the City's desert preserve system.
As part of the month-end close process, the Transaction Privilege Tax (TPT) collections received for the month are transferred to the respective funds based on each business classification. Sixty percent of initiative proceeds are dedicated to improvements and renovation of City parks and acquisition of land for future city parks, while 40 percent is dedicated to land acquisition and development of the City's desert preserves, including trails, trailheads, and signage.
In 2008, 83 percent of voters renewed the Phoenix Parks and Preserve Initiative for 30 more years.