Cass Information Systems Inc is a provider of payment and information processing services to large manufacturing, distribution and retail enterprises across the United States. The company provides transportation invoice rating, payment processing, auditing, accounting, and transportation information. It is also a processor and payer of energy invoices, including electricity, gas, waste, and other facility-related expenses. It operates in two segments: Information Services and Banking Services. The firm generates maximum revenue from the Information Services segment, which provides transportation, energy, telecommunication, and environmental invoice processing and payment services to large corporations.