The San Bernardino County Auditor-Controller/Treasurer/Tax Collector’s (ATC) Office has gone live with TaxSys, Grant Street Group’s cloud-based integrated property tax billing, collection, and distribution system. Modernizing the technology solution for the most critical aspects of the ATC office marks a significant advancement for internal operations and delivery of essential public services for more than two million residents.
With the successful July 2025 launch, San Bernardino County, the nation’s largest county by area and one of the most complex tax jurisdictions, became the third California county to move to TaxSys, underscoring the platform’s ability to support large-scale and dynamic county governments.
“Replacing our tax system was a strategic and carefully planned priority for my office,” said Ensen Mason, San Bernardino County Auditor-Controller/Treasurer/Tax Collector. “The implementation was a huge undertaking, and I am grateful for the hard work of my staff and Grant Street Group for getting it done. With the modern framework and integration that TaxSys provides, we now have greater operational efficiencies and streamlined services for our customers.”
The TaxSys go-live brings a host of convenience-driven enhancements for both staff and taxpayers. Residents have access to a user-friendly online portal where they can search and pay bills in English or Spanish from any device. The portal supports Apple Pay, Google Pay, and other digital wallets and provides real-time digital receipts. It also includes streamlined online forms, making submission and processing faster and more convenient.
County agencies benefit from a secure portal that allows direct charge uploads and offers greater transparency through real-time reporting. TaxSys delivers significant back-office improvements with faster data processing, robust security, and seamless integration with County systems. These advancements overall create a more reliable, efficient, and responsive experience for County staff and taxpayers alike.
“Ensen Mason’s leadership and determination have transformed the San Bernardino County ATC’s office,” said John McCarthy, Grant Street’s Executive Director, Sales. “We are honored that he and his team chose TaxSys and our full suite of integrated products to help accomplish their goals.”
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 $33 billion in e-payments. Over the past 25 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.