Support Multiple Ways To Accept Payments.
Integrate with the Fattmerchant Payments API to seamlessly accept all major credit cards, ACH payments and more in your app, website or software.
Customize Your Experience, Your Way.
Our RESTful HTTP API solution allows your developers to build an environment customized for your business – allowing you to easily send invoices and accept payments with all of the benefits of processing with Fattmerchant.
Rest Easy With Data Security.
Data security is always top of mind for us, and our API is PCI-DSS compliant, so your payment and customer information is secure – no sensitive data ever hits your servers.
Gain The Knowledge To Succeed.
Fattmerchant’s robust dashboard and reports give you insight into all areas of your business, allowing you to streamline your processes and align your staff and inventory with customer demand. With real-time information available to you on your mobile device from anywhere, your information is always at your fingertips.
Payment Processing, Your Way
Fattmerchant Payments API allows your developers to build an environment customized for your business – allowing you to seamlessly accept payments with all of the benefits of processing with Fattmerchant.
Simple Set Up
The Fattmerchant API is simple to set up, and we can help get you started with tutorials, videos and a wide range of support options.
Amplify Your Sales
Combining a robust invoicing solution with enhanced reporting means even deeper insights into your business than ever before. Learn what products are driving your sales, and how you can maximize your profits.
What Our Members Are Saying
“We use the API to save cards on file when a patient calls to book an appointment with us. I love that Fattmerchant saves cards on file, which is really important to us.
In our industry, our patients often have balances left to be paid, so it’s a very simple process for us to have them sign an agreement to be charged after their appointment, so we don’t have to send paper statements to be paid at a later date.”