What is the name of the index that tracks changes in prices received by domestic producers for their output?

The index that tracks changes in prices received by domestic producers for their output is the Producer Price Index.

The PPI measures average price movements earlier in the supply chain than a consumer-focused index. It can cover goods, services, construction, mining, agriculture, utilities, and other domestic production. In the United States, the Bureau of Labor Statistics publishes many PPI series each month using prices reported by sampled establishments.

PPI data are organized in several ways. Industry indexes follow the output of particular industries, commodity indexes group products by their characteristics, and the Final Demand–Intermediate Demand system separates sales to final users from goods and services sold as production inputs.

PPI is often confused with the Consumer Price Index. CPI tracks prices paid by households for a defined consumer basket, while PPI tracks prices received by producers. Movements in producer prices can sometimes foreshadow consumer-price changes, but the two indexes need not move together because their coverage, weights, taxes, margins, and stages of the supply chain differ. In the United States, the measure was known as the Wholesale Price Index until 1978.