State revenue agencies are increasingly modernizing payment operations to support secure, multi-channel experiences without disrupting core systems. Grant Street Group’s PaymentExpress platform is designed to support that evolution, from in-person payments to fully integrated online and phone-based channels.
A recent example of this progression can be seen at the Washington State Department of Revenue (DOR), where PaymentExpress was first implemented in 2022 to modernize in-person tax payments across 12 public-facing locations statewide. The deployment enabled secure card acceptance and contactless payments while simplifying staff compliance processes.
Building on that foundation, PaymentExpress has since expanded to support online and phone-based payment options for key business tax and licensing services. The digital experience can be embedded directly within existing websites, allowing users to complete transactions without being redirected to a third-party environment.
Today, PaymentExpress processes all credit card transactions for the Department across in-person, online, and phone channels.
Our platform can integrate with systems such as FAST Enterprises’ GenTax and support high-volume government payment environments that require strong security controls, operational continuity, and detailed reporting.
This expansion reflects how agencies can build on an initial in-person deployment to support a unified, multi-channel payment experience while maintaining existing systems and operational standards.
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The benefits of PaymentExpress include seamless integration with county and state systems of record, increased digital payment adoption, robust security, faster checkout times, reduced e-check returns, improved reconciliation, account balancing, and reporting, to name a few.
For more information, contact John McCarthy at (412) 246-1321 or via email John.McCarthy@GrantStreet.com.
About Grant Street Group
Grant Street Group specializes in cloud-based government solutions for tax collection, e-payments, and auctions. Every year, we process over $67 billion in tax payments and over $30 billion in e-payments. Over the past 20 years, Grant Street has hosted online auctions of financial instruments exceeding $13 trillion. Our innovative software products help government entities enhance service delivery, efficiency, and operational excellence.


