Blue J Raises $122M Series D for Gen AI Tax Research Platform
Toronto, August 4, 2025 – Blue J, a generative artificial intelligence (AI) platform specializing in tax research, today announced it has secured $122 million in a Series D funding round. The investment was co-led by Oak HC/FT and Sapphire Ventures, with participation from Intrepid Growth Partners, along with existing investors Ten Coves Capital and CPA.com. This significant capital infusion comes just seven months after Blue J’s Series C round, underscoring strong market confidence in the company’s leadership within its category.
Benjamin Alarie, CEO and co-founder of Blue J, expressed his enthusiasm for the new partnerships and continued support. “This commitment is a powerful endorsement of our vision to transform tax research,” Alarie stated. “With this capital and industry backing, we will accelerate innovation and deliver even greater value to tax professionals as we build the future of tax.”
Investors highlighted Blue J’s innovative approach to a long-standing industry challenge. Allen Miller, Partner at Oak HC/FT, noted, “Tax research has long been a cumbersome, time-consuming task. Blue J has solved this with an elegant AI solution that dramatically accelerates research while raising the bar for accuracy. We believe Blue J will become the new standard for complex tax questions.” Cathy Gao, Partner at Sapphire Ventures and Blue J’s newest board member, added, “Blue J is exactly what we look for in vertical AI: deep domain expertise, proprietary data, and a product that drives meaningful business impact. By applying generative AI to decades of tax rulings, Blue J reduces research that once took hours to just minutes.”
Founded in 2015, Blue J’s platform leverages advanced generative AI to provide instant, reliable answers to complex tax questions across U.S. federal, state, and local tax (SALT), as well as Canadian and UK tax law. The system is built upon a meticulously curated database of authoritative tax law and continually refines its capabilities by learning from millions of user queries annually. This enables practitioners to navigate intricate tax issues with enhanced confidence and speed.
Unlike traditional keyword-based research tools, Blue J offers a conversational interface, allowing users to pose tax questions naturally without requiring specific syntax. This intuitive design delivers answers within seconds, complete with relevant source citations, making it a highly user-friendly platform. The company reports high user engagement, with over 70% of users logging in weekly and a consistently high Net Promoter Score (NPS) in the mid-70s.
Blue J has experienced rapid growth in 2025. In the first half of the year, the company more than doubled its revenue and customer base, now serving tens of thousands of tax professionals across thousands of organizations. Since January 2025, Blue J has expanded to over 80 employees and significantly accelerated its rate of new customer acquisition. The Series D funding will be strategically deployed to further expand the team, accelerate product development, and broaden market reach.
The company’s advancements have also garnered recognition from other leaders in the AI space. Marc Manara, Head of Startups at OpenAI, commented, “Blue J is a leading example of effective AI deployment in one of the most complex information domains. By leveraging OpenAI’s latest models, Blue J has elevated the standard for accuracy, trust, and insight in tax research.” With this new investment and its strong market momentum, Blue J is positioned to establish the new benchmark for AI-driven tax research as global tax complexity continues to increase.