Your #1 Merchant Services Provider
From high risk to small business, get comprehensive in-house services for payment processing.
Outdated and inefficient merchant services and credit card processing systems can jeopardize the hard-earned loyalty your business has established with its customers, regardless of product or service quality. At Group ISO, we recognize the paramount importance of secure, reliable, and integrated merchant services systems.
With over 20 years of experience as a registered Full-Service Provider (FSP) and Independent Sales Organization (ISO), we have been supporting businesses of all sizes. Unlike other merchant service providers, all our services are handled in-house, enabling us to approve, service, and maintain payment processing solutions for all industries from small retail businesses to large online high risk merchants.
FEATURED CLIENTS
Your #1 Merchant Services Provider
From high risk to small business, get comprehensive in-house services for payment processing.
Outdated and inefficient merchant services and credit card processing systems can jeopardize the hard-earned loyalty your business has established with its customers, regardless of product or service quality. At Group ISO, we recognize the paramount importance of secure, reliable, and integrated merchant services systems.
With over 20 years of experience as a registered Full-Service Provider (FSP) and Independent Sales Organization (ISO), we have been supporting businesses of all sizes. Unlike other merchant service providers, all our services are handled in-house, enabling us to approve, service, and maintain payment processing solutions for all industries from small retail businesses to large online high risk merchants.
FEATURED CLIENTS
How It Works
Receive an Instant Quote
Start Accepting Payments
Empowering Your Business with Comprehensive
Payment Solutions
At Group ISO, we handle it all. Whether you’re seeking high-level credit card processing, integration of your ERP with payment solutions, or simply dissatisfied with your current provider, our robust services are here to meet your requirements.
ERP Systems
Experience the power of synchronized data, streamlined workflows, and enhanced visibility into your financial processes. Simplify your back-office operations and optimize your payment processing with Group ISO’s integrated ERP solutions.
Payment Integration
At Group ISO, providing seamless merchant services and online credit card processing experiences for our customers is a top 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.
Level 2 & Level 3 Processing
Unlock the full potential of your payment processing with Group ISO’s Level 2 and Level 3 processing capabilities. Our advanced solutions cater to businesses of all sizes, offering custom credit card processing and merchant services tailored to your unique needs.
Credit Card Processing
We provide custom credit card processing and merchant services solutions for businesses across industries. We offer various payment solutions to give your business payment acceptance flexibility, including check processing and EBT/SNAP acceptance. Find out today what sets us apart!
Payment Products
Group ISO merchant credit card processing services offer various innovative products to meet your payment processing needs. Whether you require mobile payment solutions or a sleek and user-friendly POS system, our products enhance the customer experience. Take your business to the next level with our products.
Comprehensive Solutions
We can assist you in achieving PCI compliance, implementing customer loyalty programs, and establishing systems for recurring payments. Let us provide you with the tools for success.
Customized Payment Processing Solutions for Your Business
Take Your Retail Business To New Heights
Wholesale & Distributors Efficiently manage your wholesale and distribution operations with our comprehensive payment processing solutions.Explore our Wholesale & Distributors Products
E-Commerce From secure online transactions to integrated shopping carts, our merchant credit card processing services empower your e-commerce success.Start Maximizing Your Online Sales
Restaurants Simplify tableside ordering and payments, enhance efficiency with integrated POS systems, and offer a seamless dining experience to your customers.Elevate Your Restaurant Operations
Small Business Enjoy tailored payment processing solutions that cater to the specific needs of small enterprises, empowering growth and efficiency.Trustworthy Solutions for All Industries
Low Risk IndustriesOwning a company in a low risk industry lets you conduct business as usual. But low risk companies still face challenges regarding payment processing and merchant services. Merchant card processing companies can offer secure and reliable POS systems and payment processing. These tools and services ensure you run your low risk business with ease! |
Group ISO serves many low risk businesses and industries, including:
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Medium Risk IndustriesSometimes, companies dealing with a difficult period find themselves moved from low to medium risk. Group ISO is the business partner your company needs when dealing with medium risk-related situations. We’ll help connect your business to the right payment provider while reducing chargebacks or otherwise declined transactions. |
Medium risk businesses and industries Group ISO serves include:
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High Risk IndustriesThrough no fault of their own, companies in high risk industries can face increased risks of chargebacks and fraudulent transactions. Group ISO protects your high risk business by offering superior chargeback mitigation and protection against fraud. When traditional payment processors turn your business away, shut down its accounts, or charge insanely high fees, contact Group ISO. | Some high risk businesses we serve include:Learn more about how we serve high risk industries! |
Group ISO provides secure and reliable credit card processing solutions for high-risk industries. We combine industry knowledge with actionable benefits to ensure your high-risk business thrives.
Why Choose Group ISO?
Stellar support. That's how we roll.
Here’s why you should choose Group ISO as your merchant services provider:
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Integrations With Your Favorite Tools
At Group ISO, we’re constantly finding new ways to ensure our system optimally integrates with your current ecosystem. Here are just a few of our integrations. Please contact us if you require a different integration that isn’t listed and we’ll be happy to work with you to find a solution.
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Merchant Testimonials
Dwight C. Esnard
Mesa Garage Doors
Group ISO has been a fantastic addition to Mesa Garage Doors. Not only have we saved money but the personalized service is second to none. It is nice to have a credit card company that continually works with us and maintains its customer service years after the first transaction. I have and will continue to recommend Group ISO.
Niurka
Niurka Inc.
Isabella Stoloff
Orange County Healing CenterFrequently Asked Questions
What is Level 2 and 3 processing?
Level 2 and 3 processing are advanced transaction processing methods that provide detailed line-item data for commercial and government transactions. They allow businesses to qualify for lower interchange rates, improve reporting capabilities, and enhance security.
Which ERP systems are compatible with Group ISO’s payment integrations?
Group ISO’s payment integrations are compatible with popular ERP systems such as Sage, NetSuite, Microsoft Dynamics GP, and QuickBooks.
What level of customer support does Group ISO provide?
Group ISO takes pride in offering exceptional customer support. Our in-house support team is available 24/7 to assist you with any queries or issues.
Contact us today to experience the Group ISO difference!
Client Support: 800-960-0135
Sales: 800-722-4476
Agent Support: 800-960-0135
Office Hours: Mon-Fri 7:30 AM – 5:00 PM PST
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Copyright © 2026 Group ISO. Group Independent Sales Organization 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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