Investment Giant Blue J Secures $122 Million in Series D Funding, Primarily Funded by Oak HC/FT and Sapphire Ventures
Blue J, a pioneering generative AI tax research platform, has announced the successful completion of a $122 million Series D funding round. Led by Oak HC/FT and Sapphire Ventures, the round also saw participation from Intrepid Growth Partners and previous investors Ten Coves Capital and CPA.com [1][2][3].
The funding round underscores the growing market confidence in Blue J's technology, which currently serves tens of thousands of tax professionals across thousands of organizations. In the first half of 2025, Blue J more than doubled its revenue and customer base [3].
Built on a rigorously curated database of U.S. federal, state, local (SALT), Canadian, and UK tax law, Blue J uses advanced generative AI to provide instant, reliable answers to complex tax questions through an intuitive, conversational interface. Its system continuously improves from millions of queries yearly, enabling practitioners to navigate challenging tax issues with confidence and speed [1][2][3].
Allen Miller, Partner at Oak HC/FT, believes Blue J has solved the challenge of cumbersome, time-consuming tax research with an elegant AI solution [3]. Cathy Gao, Partner at Sapphire Ventures and Blue J's newest board member, believes Blue J reduces research that once took hours to just minutes [3].
The investment signals a market consensus that Blue J is the breakout winner in its category. Blue J's product is trusted by enterprise clients, embraced by top firms, and loved by many practitioners. More than 70% of users log in weekly, and Blue J's Net Promoter Score (NPS) is consistently in the mid-70s [3].
With the Series D funding, Blue J will further accelerate team expansion, product development, and market reach. The goal is to establish Blue J as the new global standard for AI-driven tax research amid rising tax complexity worldwide. The platform is recognized by leaders like OpenAI, which collaborates with Blue J to train its GPT-4.1 model on real-world tax scenarios, underscoring Blue J's high-precision AI research capabilities [3][4].
Benjamin Alarie, CEO and co-founder of Blue J, expressed his excitement about the future, saying, "We are thrilled to have the support of our investors as we continue to innovate and transform tax research and decision-making for tax professionals globally."
Blue J's intuitive interface delivers answers in seconds, complete with relevant source citations. Users can ask tax questions conversationally, with no arcane syntax required [1][2][3]. As tax laws become increasingly complex, Blue J's platform offers a valuable tool for professionals seeking accurate and efficient solutions.
Sources: [1] Blue J Announces $122 Million Series D Funding Round, https://www.bluejtax.com/news/blue-j-announces-122-million-series-d-funding-round [2] Blue J Raises $122 Million in Series D Funding, https://techcrunch.com/2025/06/01/blue-j-raises-122-million-in-series-d-funding/ [3] Blue J Secures $122 Million to Transform Tax Research, https://venturebeat.com/2025/06/01/blue-j-secures-122-million-to-transform-tax-research/ [4] OpenAI Collaborates with Blue J to Train GPT-4.1 Model, https://openai.com/blog/gpt-41-collaboration-with-blue-j/
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- With the injection of $122 million in Series D funding, Blue J is poised to revolutionize the field of finance by harnessing artificial-intelligence in tax research, which could potentially influence and optimize other areas of investing and technology worldwide.
