Software that tames complexity

Secure government cloud solutions built to modernize tax collection, e-payment, and financial auction services.

Transforming government for a digital future

Technology designed to modernize and future-proof revenue management for government
Tax Collection

TaxSys®

Modernize tax administration with a system proven in large and complex counties. TaxSys is a hosted, web-based solution for tax calculation, billing, collection, and distribution. Built for government, TaxSys automates complexity, streamlines constituent services, and empowers staff with scalable, extensible technology that adapts to new legislation and future innovation. 

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Payments

PaymentExpress®

Streamline government payments with a comprehensive platform proven in complex jurisdictions. PaymentExpress unifies payment collection, management, and reporting across every channel—delivering modern options payers expect and simplified operations staff need, all on a secure, high-availability platform.

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Auctions

Online Auctions

Grant Street’s delinquent collection software suite includes LienAuction®, for delinquent tax lien certificate auctions, and DeedAuction®, for tax-defaulted property sales. These solutions streamline processes for tax offices, increase competition, and provide greater transparency into the delinquent collection process.

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Capabilities built with government in mind

We offer a comprehensive suite of features to keep your data secure, enable informed decision-making, and provide seamless onboarding and continuous support to keep your operations running smoothly.

Tightly Woven Security

State-of-the-art PCI-DSS Level 1 compliant security infrastructure that keeps your data safe and your operations in motion.

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Data Driven Results

Our business intelligence tools enable stakeholders to make informed decisions, drive growth, and improve efficiency.

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Dedicated Client Support

From onboarding to ongoing maintenance, we’re here to help every step of the way.

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“Grant Street has been a key partner in our system modernization, collaborating seamlessly with FAST Enterprises to deliver a modern payment experience to South Dakotans. We found the Grant Street team easy to work with, flexible, and proactive in solving our problems.”

Rosa Yaeger
MVD Director, South Dakota Department of Revenue
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"Grant Street did a great job on the implementation. The solution matches what they presented. We now have a seamless integration and happy staff."

Luke Rector
Cobb County, GA Tax Commissioner
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“Grant Street Group provides excellent customer service; is responsive and timely; performs services within contract cost parameters; maintains effective business relations; and employs professional staff.”

Diana Atkeson
San Bernadino County, CA Chief Deputy Tax Collector
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“We chose a great partner in Grant Street, and the GSG team has been nothing short of amazing to work with. There is much to learn from them as they perform their responsibilities with professionalism and always with an eye toward simplifying processes and meeting our needs."

Chuck Perdue
Bay County, FL Tax Collector
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Let’s shape the future of government technology together. Join our team!

Our service-minded approach provides the common framework that guides our thinking, decision-making, and day-to-day action, empowering each of us to lead the way in shaping the future of government technology. Everything we do centers on building solutions that revolutionize government operations. Our team members offer diverse skills and perspectives, united by our curiosity to deliver exceptional software solutions.
Life at GSG
Open Positions
The Grant Street Group team standing together for a group photo.