The American Customer Satisfaction Index (ACSI) is an economic indicator that measures the satisfaction of consumers across the U.S. economy. It is produced by the American Customer Satisfaction Index (ACSI LLC) based in Ann Arbor, Michigan.
The ACSI interviews about 350,000 customers annually and asks about their satisfaction with the goods and services they have purchased and consumed. Respondents are screened to ensure inclusion of actual customers of a wide range of business-to-consumer products and services, including durable goods, services, non-durable goods, local government services, federal government services, and so forth. Customer satisfaction (ACSI) scores are released monthly throughout each calendar year. ACSI data is used by researchers,[1] corporations,[2][3] government agencies,[4] market analysts and investors,[5] industry trade associations, and consumers.