There are two methods for working with shopping carts that list Authorize.net as a payment gateway. The first method is for developers that want to add functionality to the Authorize.net shopping cart but use the GoToBilling as the primary gateway connection.

The second method is for quick redirect from the Authorize.net gateway to GoToBilling. It is designed for the non-developer, is much less technical and requires no prior knowledge of code.

Select and download the method that best serves your shopping cart needs.

Method 1 - Advanced Authorize.net Emulation API

Method 2 - Quick Connect API

Note: Once you are ready to test your integration, please contact GoToBilling to set up a test account for certification with your application.