ePay Integration

ePAY makes it easier for Illinois government agencies—and the partners who support them—to accept payments online and in person. It offers a secure, reliable way to process transactions while reducing manual steps like reconciliations, paperwork, and routine back-office follow-up.

Whether you’re an agency that wants to start accepting payments or a solution provider looking to integrate, the resources below can help you:

Understand how ePAY works and what payment types may be supported
Review technical requirements and integration pathways
Identify key contacts and next steps for onboarding
Explore options to connect your existing systems for smoother reporting and reconciliation

Use the information below to connect with ePAY and explore the right integration approach for your organization.

For Participants

At ePAY, we want to provide the best possible payment experience to your organization and your constituents. By integrating ePAY payment processing into your existing solutions, we can provide seamless, pain-free payments and simplify back-office procedures. If you believe there is an opportunity to improve your current or planned payment process, please contact illinoisepay@illinoistreasurer.gov to schedule a call with you and your solution provider. Complete this online ePAY form to get started

For Solution Providers

ePAY is the premier payments provider for state and local governments in Illinois, and by integrating your solutions with ePAY, we can work together to provide the best payment experience to the people of Illinois. We work hard to make integration easy and provide multiple options, including REST and SOAP APIs, payment redirects, and point-of-sale wrappers, all backed up with explicit developer documentation. If you are a solution provider for government entities in Illinois and wish to pursue a partnership, please contact illinoisepay@illinoistreasurer.gov to get started.