American Customers Satisfaction Index (ACSI)

The American Customer Satisfaction Index (ACSI) is a free Web site that provides customer satisfaction data on a scale of zero to 100 for companies and industries in the United States. Users can either access datasets with the benchmark scores, or consult more detailed industry reports. Historical data back to 1995 is available for many companies and industries. There are no direct competing Web sites or databases to ACSI. ACSI was created by the University of Michigan’s Ross School of Business and its data is authoritative, as evidenced by being cited in many peer-reviewed articles. Researchers in the field of marketing, finance, and economics will find the ACSI data useful. Users can use ACSI data to compare companies’ customer satisfaction scores, predict changes in the Gross Domestic Product (GDP), and predict which companies will be better investments. Users will experience more success in locating data and reports by browsing than by performing keyword searches. Researchers interested in the United Kingdom will be interested in the sister resource called the National Customer Satisfaction Index‐UK (NCSI-UK).