Accept Payments
Now With Cardknox Go

Process Credit or ACH Transactions With Our Seamless Payment Solution

Seamless Onboarding And One Flat Rate

Enjoy a quick and efficient onboarding process that takes just minutes to complete.
Cardknox Go offers the fastest approval times and
a simple flat rate that you can depend on.

Flat Rate Pricing

One flat rate—no strings attached. No PCI fees, monthly fees, gateway fees, or hidden fees. Processing fees are deducted before settlement so you can know exactly what to expect.

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Instant Onboarding

No underwriting, no paperwork, and no signatures needed—you’ll be up and running before you know it.

All it takes is a few minutes to receive your merchant ID and start accepting payments.

When you sign up for Cardknox Go
you’ll get FREE access to


The Cardknox Gateway

Our flexible, and cutting-edge payment gateway supports fully customizable payment processing setups in-store, online, and via mobile devices. Built with merchants’ needs in mind, the Cardknox gateway offers a wide range of features to improve customer satisfaction, boost security, and cut costs.

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Online Hosted PaymentSITE

Ideal for campaigns and events, PaymentSITE is our PCI-compliant hosted payment form that can be easily embedded on a merchant’s website or used as a standalone payment form for quick acceptance of online payments. When used as a standalone payment form, the customization options are endless.

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Easy Management of Payment Activity

The Cardknox Portal is our user-friendly online platform for seamless management of payment processing accounts. Whether you want to monitor sales data and transaction history, generate reports, process transactions, or view batches, the Cardknox Portal offers quick access to all the tools you need to stay on top of your processing activity without the hassle.

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Cardknox PhonePay Free

When you sign up to process payments with Cardknox, you will automatically receive PhonePay Free, a free interactive voice response (IVR) account. This basic version of our standard PhonePay Plus IVR solution enables you to accept customer payments through an automated phone system for absolutely no extra cost!


PhonePay Free uses a toll-free master dial-in number made available to all Cardknox Merchants and their customers. Your customers can call this number 24/7 to make a payment or donation using a unique PIN number, and then follow the prompts to key-in their payment information. This fast and user-friendly process is a great backup option that Merchants can rely on in the case of connectivity issues.

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24/7 White Glove
Customer Support

Our customer service and technical support teams are available around the clock to assist you with any questions or concerns.

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Advanced Security &
PCI Compliance

Includes end-to-end level 1 PCI-DSS compliance. Tokenization technology securely stores payment information.

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A+ BBB Rating &
98.3% Retention Rating

Choose a payment processing solution that will withstand the test of time—our clients stick with us for the long haul.

Even More Cardknox Features

Take your payment flow to the next level with our wide array of flexible tools.

Support for a Wide Variety of e-Commerce Platforms

You can process with Cardknox, no matter your setup. Cardknox Go is compatible with many leading e-commerce platforms, including Magento and WooCommerce.

Recurring Payments Made Easy

Create customer and product profiles that are set on a recurring payment schedule—perfect for memberships, payment installments, and subscription services.

Account Updater Tool

Our account updater tool automatically scans and updates any expired card information, and our recurring payments technology uses it to support fully-automated processing without errors.

Split Payments

Seamlessly divide earnings between two or more parties at the point of sale on a flat-rate or percentage basis all before batch settlement occurs. This solution is perfect for business models in which a master account receives all payments for later distribution among subaccounts.

Ready to Get Started?