Custom Merchant Services helps small to mid-sized businesses find payment solutions that best fit their organization’s needs, at the lowest rates possible. We’re locally owned and operated in Greenville, SC, and serve clients in Upstate SC, Northern Georgia and around the NC Triad.

Through our credit and debit card processing solutions and other payment solutions, our goal is to empower you.
Here’s what Custom Merchant Services can offer your business or practice:

Credit/debit card processing

We can set your business up to accept credit and debit cards through Visa, MasterCard, Discover and American Express. Our rates are guaranteed to be the lowest available with a guarantee that they won’t increase (unless Visa or MasterCard raise their national fees). Learn more about the benefits of credit card processing for your business.


A CMS representative will talk with you personally and help you identify the best payment processing equipment for your organization’s needs.

In addition to standard and wireless POS terminals, we also offer high-demand equipment at great rates, including mobile swipers. When it comes to portability and convenience, you can’t beat a card reader that attaches directly to your smartphone or tablet. However, some other service providers can charge in excess of 3% per transaction, and may surprise you with penalties. CMS offers mobile swipers with understandable fees at the lowest possible rates.

Cash advance

We offer 48-hour cash advance services for your business needs through SalesGuard.

Gift cards

Gift cards create goodwill, encourage recipients to visit your store, and often create additional profit as most shoppers don’t redeem the full value of their cards. CMS can customize gift cards for your business, using your logo and branding. Your first 30 gift cards are free.

What makes CMS stand apart