Fattmerchant Developer Tools

Build the Perfect Payment Solution for Your Business

Transactions Where You Need Them.

Our developer tools make it possible for your business to accept payments in person or remotely with our card present and card not present functionality available in a single API.

Accept Multiple Payment Types.

Quickly build out secure payment flows into your web-based applications and mobile apps to seamlessly accept all major payment methods, including credit cards, ACH, cash, and check payments.

Rest Easy With Data Security.

Data security is always top of mind for us. With our PCI-DSS compliant API your payment and customer information is secure and always encrypted.

Robust Documentation and Support.

Fattmerchant’s documentation, including iOS and Android SDKs and Javascript library, provides simple setup, and our seasoned developers can help you get started. Plus, our tutorials, videos, and a wide range of support options are always available.

What Our Members Are Saying

β€œOne of the keys to our success is the acceptance of credit cards. There are many wonderful aspects of our relationship with Fattmerchant. I love the fact that we do not need a physical terminal. We can login and process our credit card payments on any laptop or desktop.”

– John Smith, President of Storm Stopper

More Reasons to Love Fattmerchant

Designed to grow with your business, Fattmerchant brings your entire payment experience into one easy-to-use platform.

Data When You Need It

No matter how you process, all of your payment data lives within the Omni platform.

Integrations

Integrate bi-directionally with your favorite business tools, like Quickbooks Online.

Processing Management

Manage your statements, deposit reports, PCI compliance, and more!

Dedicated Customer Success

Your account manager knows your name, business name, and what you need for success!

See If Fattmerchant API Is Right For You

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