The group of indexes that measures the average change in selling prices received by domestic producers of goods and services is called the Producer Price index (PPI). PPIs are different from other indexes, such as the Consumer Price Index, that measure price change from the purchaser's viewpoint as they measure price change from the point of view of the seller.

A wholesale price index (WPI) measures overall change in producer prices over time. It is a measure of inflation based on the prices of goods before they reach consumers. In the U.S. the WPI was renamed the Producer Price Index (PPI) in 1978.

he Consumer Price Index (CPI) is a measure of the average change over time in the prices paid by urban consumers for a market basket of consumer goods and services.