United Merchant Services, Inc. (UMS) is a New Jersey-based, comprehensive payment processing company servicing merchants nationwide. Headquartered in Hackensack, NJ, just minutes away from the heart of Manhattan, UMS uses its resources to provide world-class products and services to its merchants. Our continuous development of innovative payment products & services, and our commitment to excellent customer service has lead us to become one of the top private payment processors in the nation.