Regulus is one of the largest independent providers of both bill presentment and remittance processing in the United States, servicing approximately 1.9 billion paper and electronic items annually for more than 4,000 clients. The company is one of the only single-source providers of both document and remittance processing in the country. Regulus provides an end-to-end solution that covers every aspect of accounts receivable management from the point when a corporation releases a billing to the posting of the associated payment. Its clients include companies involved in the lending, telecommunications, utilities, insurance, health care, credit card and publishing industries. Regulus was founded in 1995 and maintains its headquarters in Napa, Calif. It employs 2,700 people at additional offices throughout the U.S.