CMS. Complete Merchant Solutions is a full-service electronic payments solutions provider. We facilitate electronic payment processing for all major Credit & Debit cards; Gift & Loyalty cards; ACH, Remote Deposit Capture as well as other non-cash payment methods. Our innovative, customizable solutions include a wide variety of integrated Point-Of-Sale software, Terminals and Machines, E-commerce and Wireless payment processing solutions.. Payment, Processing, Revenue, Sales, API Integration, Solutions, cheaper than Paypal, Providers, Savings, Merchant, Payments, Billing, Credit, Debit, Card, POS, ECommerce, Terminal, Residuals, Authorize, ISO, Gateway, Virtual Terminal, Support, Security, PCI, Invoicing, Reports, Visa, MasterCard, American Express, ACH, FSP, Business, Growth, Point of Sale, Integration, Service, Chip Card, EMV, Innovation, Mobile, Card Reader, Market