Our Company.

Founded in May 1996 in Massachusetts, RSI has grown into a thriving leader in modernizing tax solutions for public agencies worldwide. Our mission is to empower government offices to enhance citizen services, boost operational efficiency, and maximize revenue collection. Trusted by over 60 tax and revenue agencies globally, including the U.S. IRS, the Multistate Tax Commission, and the Province of Saskatchewan, we are the collaborative partner driving transformative solutions to tax administrations.

Culture & Community

With a proven track record of delivering more than 300 successful projects, RSI’s solutions for integrated tax processing, compliance, and audit operations have become an industry standard for government agencies. Through our Government Premier™ platform, our solution provides highly efficient and customizable systems that meet the essential needs of government. And as our client and product base expands, so does our dedicated team, all focused on supporting government agencies unique needs and ensuring their success.

Company History Timeline

Over the last 28 years, RSI has experienced significant growth in both the breadth and depth of our solutions. RSI remains focused on providing high quality industry-leading software and extensive tax and revenue expertise in implementation.

1996 - 2002

Organic Growth

Founded in 1996, RSI initially provided State Tax Staff Augmentation. RSI’s launch of our tax compliance solution, Portfolio Warehouse, propelled us to become industry leaders.

2002 - 2007

Platform Creation

We began to evolve into a software solutions provider. We introduce Revenue Premier as our first State Integrated Tax Processing solution.

Aerial view of Providence capitol building

2007 - 2019

State Focus

Building on our past performance, RSI emerges as a leader in State Integrated Tax Systems (ITS), securing 5 state ITS contracts with Revenue Premier.

Laptop opening with colorful light reflecting

2020 - 2023

Strategic Integration

Acquired by DC Capital Partners, we joined a portfolio of government-focused companies. Under this new leadership, industry veterans helped accelerate growth and innovation. During this time, we released the industry's first cloud-native SaaS ITS solution.

2024 - Future

Vertical Expansion

Eyeing the future, we're focused on our continuous expansion in the Local , State and Federal market space. With our Government Premier™ platform we've also expanded our offerings to include consultative solutions for Organizational and Business Optimization.

Career Opportunities

Our growth and continued success is the result of our amazing team. We believe in building a team of amazing people (like you). Interested in joining our team? See what career opportunities are available.

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