Blue J Raises $122M Series D for GenAI Tax Research Platform
Blue J, a prominent generative AI (GenAI) tax research platform, has successfully secured $122 million in a Series D funding round. The investment was co-led by leading venture capital firms Oak HC/FT and Sapphire Ventures, with additional participation from Intrepid Growth Partners, and existing investors Ten Coves Capital and CPA.com. This significant funding, announced just seven months after Blue J's Series C round, underscores strong market confidence in the company's innovative approach to transforming tax research.
The infusion of capital is set to accelerate Blue J's product development, team expansion, and global market reach. Benjamin Alarie, CEO and co-founder of Blue J, expressed enthusiasm for the partnerships, stating that the commitment from these firms is a powerful endorsement of Blue J's vision to revolutionize tax research. He emphasized that this investment will allow them to deliver even greater value to tax professionals and build the future of tax.
Blue J's platform leverages advanced GenAI to provide rapid and reliable answers to complex tax questions across U.S. federal, state, and local tax (SALT), as well as Canadian and UK tax law. The platform is built on a meticulously curated database of authoritative tax law, which is continuously updated and improved by learning from millions of user queries. This innovative solution aims to dramatically accelerate research while enhancing accuracy, addressing the long-standing challenge of time-consuming and cumbersome tax research. Allen Miller, Partner at Oak HC/FT, highlighted that Blue J's elegant AI solution is poised to become the new standard for complex tax questions. Cathy Gao, Partner at Sapphire Ventures and a new board member for Blue J, noted that the company embodies what they seek in vertical AI: deep domain expertise, proprietary data, and a product that delivers meaningful business impact.
The tax and accounting industry is currently undergoing a significant transformation driven by the integration of AI and GenAI. These technologies are revolutionizing how tax professionals manage complex tasks, offering enhanced accuracy, streamlined compliance processes, automated transactional tasks, and improved tax planning strategies. AI-powered tools can significantly reduce the time required for tax research, quickly sifting through vast amounts of information to provide concise summaries. Furthermore, AI can automate routine tasks like data entry and compliance checks, allowing professionals to focus on more strategic advisory services.
Blue J has experienced rapid growth, doubling its revenue and customer base in the first half of 2025. The company now serves tens of thousands of tax professionals across thousands of organizations. Since January 2025, Blue J's employee count has grown to over 80, and its rate of new customer acquisition has more than doubled. Its Series C round in December 2024, led by Ten Coves Capital, also aimed at accelerating global expansion and enhancing AI capabilities. CPA.com, a previous investor, has partnered with Blue J to offer its AI-powered tax research solution to firms of all sizes, recognizing the potential of GenAI to transform firm productivity and client service value.
This latest funding round positions Blue J to further solidify its leadership in AI-driven tax research as global tax complexity continues to rise. The company's focus on combining advanced AI with trusted tax content, including sources like Tax Notes, regulations, case law, and administrative rulings, distinguishes its platform. Marc Manara, Head of Startups at OpenAI, recognized Blue J as a leading example of effective AI deployment in a highly complex information domain.
Oak HC/FT, founded in 2014, specializes in growth equity investments in healthcare and financial services, with a strong focus on innovative technology and services. Sapphire Ventures, established in 2011, is a global venture capital firm that invests in high-growth, expansion-stage technology companies across various sectors, including B2B SaaS, fintech, and artificial intelligence. Both firms have a track record of backing market-defining companies, underscoring the strategic importance of their investment in Blue J.