Overview
Grant Street Group provides cloud-based software for government tax collection, e-payments, and online auctions. Its products include TaxSys (hosted tax billing and collection), RenewExpress (online vehicle and vessel renewals), PaymentExpress (secure e-payments), and an online auction platform for bonds, notes, and tax instruments used by many government and financial entities. It differentiates itself with end-to-end, government-focused cloud platforms at large scale, including major Florida tax collections and trillions of dollars in auction activity, along with the title of the world’s largest internet auctioneer. Its goal is to deliver reliable, scalable technology that helps governments manage billing, payments, and auctions efficiently and transparently.
Work here?Claim your company
Simplify's take
What believers are saying
- October 2026 Apple Pay browser support broadens PaymentExpress conversion across every major browser.
- Ohio Treasurer and Secretary of State launched cryptocurrency payments through Buckeye Billfold on October 8, 2026.
- Los Angeles County selected TaxSys in May 2026, expanding a marquee multi-year implementation.
What critics are saying
- County procurement cycles create lumpy revenue; one delayed implementation can stall multi-year recognition.
- Govtech incumbents like Tyler Technologies attack tax and payments budgets with broader suites and entrenched contracts.
- A security or payments outage would damage trust across essential county revenue operations and trigger rapid defections.
What makes Grant Street Group unique
- TaxSys has 20 years of production history, now serving 35 counties across Florida and California.
- Grant Street Group wins complex public-sector workflows, including Los Angeles County's 10-million-taxpayer property-tax modernization.
- PaymentExpress unifies online, in-person, and wallet payments, including Apple Pay and cryptocurrency in 2026.
Help us improve and share your feedback! Did you find this helpful?