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View Open Positions Support Contact Us Get A Quote Transaction Summary Login Partners ISO Agent Program Referral Partners Veterans News Start a Conversation Search A simpler, smarter, and more convenient way to pay is here The latest transaction technology transforms the way your customers pay and makes your payments quicker, easier and more secure. Our robust payment solutions include EMV, mobile wallets, and PCI security to help safeguard your business against liability for fraudulent transactions. Make sure you’re protected... Upgrade your equipment to an EMV-capable terminal solution today! Upgrade today What are you looking for today? Payment Solutions I want to save time , money , and simplify the payment processing for my business. Learn more... Partner Information I want to strengthen my business offerings through the partnership program. Learn more... Career Opportunities I want to find my dream job and build my future with a forward-thinking company. Learn more... What's going on at MainStream? 25 Million transactions annually Transparent and Fair pricing $1.3 Billion processed a year An easier way to accept payments Using the latest payment technology makes your transactions quicker, easier and more secure. Learn more EMV is here... is your business ready? Learn more Start a conversation See how MainStream saves you time , money , and simplifies your payments Start a conversation A reliable and innovative Point of Sale system Simple to use, affordable, and secure... online anytime, anywhere Ordyx is the latest state of the art Point of Sale (POS) service for today's restaurants, bars, and hospitality establishments. Using the most advanced technology, Ordyx provides reliable, customized solutions for your business. Learn more Have A Question? We’re Here…Ask Us Anything! Call us at (866) 674-1020 or click the button below and a merchant services expert will help you with your payment processing. Start a conversation GET YOUR FREE CREDIT CARD PROCESSING QUOTE NOW Get Started Why thousands of businesses trust MainStream Since 2007 we've offered businesses individualized attention and our #1 priority is offing you service you can count on and support you can trust. We believe in complete transparency and doing the right thing . What MainStream clients are saying “Our rep at MainStream was able to get us great rates on credit card processing so we made the super easy switch a while back. It’s a really easy process to see if they can do better than what you currently have and there’s no hidden fees!” Jasmin Harris Lingham Investments, Inc. “Our choice to use Mainstream was easy. The transition from our previous processor was seamless. They did all the work installing our system and trained everyone on site and not over the phone. We would recommend Mainstream Merchant Services to anyone wanting better customer service.” Dr. Gary Palm Bluff Veterinary Hospital “Since joining Mainstream our cost savings has been consistent and communication with our rep has been great. Any concerns or questions have been answered quickly with just a simple direct phone call. They also provided us with improved training and our rep is always willing to meet with us, a major plus when you want onsite customer service.” Dr. Gregory Saiki Academy Veterinary Hospital “We’ve selected MainStream as the preferred processing partner for the Original Pancake House family because of the low cost and efficient card processing for our franchisees. MainStream has approached the process with the enthusiasm, knowledge and recognition of our business style and needs.” Jonathan W. Liss The Original Pancake House Discover why thousands of businesses trust MainStream Request a free consultation Whatever your processing needs... we have the solution How we do it Our business is providing your business with easy to use processing solutions that save you time, energy, and money. Card & Check Acceptance Solutions Mobile Payment Solutions Custom Gift Card Solutions Terminals & POS Solutions And much, much more... See all payment solutions Need equipment? No problem, you can take advantage of our new Terminal Placement Program ! We'll put a brand new EMV terminal or Mobile-Stripe reader in your hand for next to nothing! Learn more A great place to grow Find your dream job and build your future with a forward-thinking company Explore Career Opportunities (or click here to see what our team members are saying) Our Partners We're committed to supporting U.S. Military Veterans and Their Families Veterans Business Network has chosen MainStream as the preferred payments processing partner for veteran business owners coast to coast. Learn more Ready to start a conversation? Give us a call (866) 674-1020 , or click the button to send us a message and we'd be happy to help you save time, money, and simplify your payment processing! Start a conversation MainStream Simplifies Your Payments Processing and Saves You Time and Money. COMPANY Solutions Get A Quote Your Business News and Updates About Partners Careers Contact News & Updates [Press Release] MainStream Expands iPad Point of Sale Product Line with Revel MainStream Expands Next Day Funding Settlement Window to 11:00 p.m. Eastern [Press Release] TSYS Expands Processing Agreement with MainStream Get in touch (866) 674-1020 hello@mainstreamms.com Connect With Us MainStream Merchant Services Inc. is a registered ISO of Wells Fargo Bank, N.A., Concord, CA ; 2015 MainStream Merchant Services. All Rights Reserved. Terms & Privacy Sitemap Scroll to top...