Payment Processing is our Business
Merchant Services
Citi Merchant Services Provided by First Data Merchant Services Corporation is a contractual alliance in the U.S. between Citicorp Payment Services, Inc. (CPSI) and First Data Merchant Services Corporation (FDMS). FDMS provides all the systems, technology, processing services and customer support to the alliance. CPSI is the sponsoring card association member and provides the clearing and settlement functions on behalf of the alliance.
