4D Payments Gateway

4D Payments Gateway is a light-weight web server that hosts a flexible yet robust set of self documenting APIs accessible via any programming language or environment capable of sending a HTTP request. It allows you to easily implement payment processing functionality into your application communicating directly with major payment processors.


Go Direct

Eliminate the middleman and associated expense by processing transactions directly with an Internet payment processor.

Major Processors

All major internet payment processors such as FDMS, Global Payments, Heartland, Paymentech, and TSYS are supported.


Familiar REST/JSON interface makes coding to the 4D Payments Gateway easy from any language.

Self-documenting APIs

Flexible self-documenting APIs – write a script and it’s automatically accessible via the web service.


Our credit card transaction and electronic payment products are built to Payment Card Industry Data Security Standards which means that your applications will be built with the most up-to-date secure and compliant credit card processing components available.

Online Resources


Speed up TSYS Authorization requests by sending interleaved transactions. The full-duplex communication mode, also referred to as “Interleaved Mode”, is intended for high volume transaction environments and allows for transmitting and receiving transaction data simultaneously without blocking.

Learn more about the Interleaved Mode in 4D Payments SDK, or download a free trial and get started!


4D Payments Gateway currently supports payment processing through:






Don’t see your preferred processor here? Contact us - we may be in the process of adding support for that processor, or we’ll consider adding it.

In order to process transaction with this product you will need an approved merchant account with one of these processors

* Any and all intellectual property rights ("Intellectual Property"associated with Total System Services, Inc. (TSYS), Heartland Payment Systems, First Data Merchant Services, Paymentech, Global Payments their web sites, and their contents are the sole property of their respective owners, affiliates, or third parties.

Product Features

Today’s broadband always-on Internet connections are vastly superior to dialup links, providing virtually instantaneous authorizations, error-free connections, and greater security.

Embedded lightweight server.

Flexible self-documenting APIs.

REST/JSON interface.

Certified support for FSA / Healthcare, Retail, Grocery, Restaurant, Hotel/Lodging, Auto Rental, Direct Marketing, E-Commerce, Debit, EBT, GiftCard, Level II,

and Level III transactions*.

PCI Security Standards Council PA-DSS validated.

Bypass expensive gateway fees by working directly with an Internet payment processor.

EMV transaction capabilities are now available through Paymentech, TSYS, and FDMS processors.

Secure data encryption using up to 256-bit SSL encryption and Digital Certificates.

Address Verification Service (AVS) data support.

Card Verification Code (CVC) support.

Support for commercial purchasing cards including Level II and Level III transactions.

Support for Recurring and Installment payments.

Credit Card validity checks decrease expenses that result from attempting to authorize invalid credit cards.

Unlimited free Email technical support backed by an experienced & professional staff.

Extensive documentation, sample applications, fully-integrated help, and much more!

30-Day Fully-Functional Free Trial

Get started today and see why developers world-wide choose 4D Payments components.