Your #1 Merchant Services Provider

From High Risk to Small Business, get comprehensive in-house services for payment processing.

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Integrated Payment Services for Merchants and Credit Card Processing

Outdated, inefficient merchant services and credit card processing systems can erode the loyalty any business has built with its customers, no matter the quality of the product they sell or the services they offer. At Group ISO, we understand how important it is to have secure, reliable, and integrated merchant services systems. For the past 20 years, we have provided merchant services as a registered Full-Service Provider (FSP) and Independent Sales Organization (ISO) of multiple banks, to businesses of all sizes. Since all of our services are performed in-house, we can approve, service, and maintain payment processing solutions for our clients including high-risk merchant services.

Equipment for All Business Types

Process credit cards with ease! Choose from a variety of devices to suit your needs.

New Devices

Handheld, mobile, and full POS systems available

Online Processing

Group ISO also offer secure payment gateways for online payment processing

Safe, Secure

However you process payments, our products offer top-notch security.

Experience Matters

Since 2000, Group ISO has been serving thousands of merchants

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Payment Acceptance

We provide custom credit card processing and merchant services solutions for businesses across industries. From retailers and ecommerce businesses to restaurants, we understand the challenges business owners face. We offer a range of payment solutions to give your business payment acceptance flexibility, including check processing and EBT/SNAP acceptance. Find out today what sets us apart!


Modern businesses need to be able to reach their customers wherever they are. Whether you want to set up a stand at a local event and still offer your customers card payments, or are looking to modernize your in-store credit card processing and merchant services systems, we can help. If you own a restaurant, you can streamline the experience for your waitstaff with one of our mobile payment products. Or, if you want a sleek, user-friendly payment processing system for your front counter, our POS and register options are a perfect fit. Explore our range of products today!

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At Group ISO, creating a seamless payment processing experience for our customers is our number one priority. We understand this entails creating an end-to-end user experience in which you have visibility into where your money is coming from and where it is going. Our merchant services and credit card processing products integrate with all major ERP and accounting software systems, including Sage, NetSuite, Microsoft Dynamics GP, and Quicbooks. At Group ISO, we strive to make merchant services simple to understand for all businesses.

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Running a business can be complicated. At Group ISO, we want to make your life as a business owner less stressful by helping you tackle some of the most complex issues modern companies face. From working with your business to make sure you become PCI Compliant to assisting you as you build customer loyalty programs and set up systems for recurring payments, our merchant services and credit card processing experts can meet your most pressing needs

Our Commitment to You

When you become a Group ISO customer, we promise you:
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Stellar support. That's how we roll.

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Stellar support. That's how we roll.
Copyright © 2023 Group ISO. Group ISO, Inc is a registered ISO of Commercial Bank of California Irvine, CA. All trademarks and service marks used on this website are property of their respective owners
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