Blue J

A tax partner who once spent an afternoon in databases hunting for one authority is the user Blue J has in mind. The company sells a research platform for tax professionals, from sole practitioners to national firms, that returns an answer within seconds and sets out the sources behind it so the practitioner can verify them. Blue J says more than 6,000 firms use it, and it offers a seven day free trial with no credit card.

From a law professors' prediction engine to tax research

The story on Blue J's site begins at the University of Toronto in 2014, when Benjamin Alarie, then associate dean of the law faculty, started thinking about what tax law might look like with artificial intelligence applied to it. He founded the company in 2015 with fellow professors Albert Yoon and Anthony Niblett. The first product predicted the outcome of tax law cases, and the range later widened to labor and employment law, business diagramming and tax research. In 2023 the company released a generative tool for tax research, which became its flagship.

Answers built on authoritative content

The research product draws on primary authoritative material along with Tax Notes and IBFD, and the company stresses that practitioners remain in the driver's seat of the analysis. Its pages claim savings of about three hours per user each week and a 75 percent cut in research time, figures that are the company's own. Separate versions of the product are marked for the United States, Canada and the United Kingdom.

Workflows for returns, notices, agreements and state tax

The agentic Workflows build on the research engine, which Blue J says has answered more than 14 million tax questions. A user supplies source documents and the system reasons through each step, pausing when a judgment call is needed, and then produces a deliverable. Sample workflows cover partnership return technical review, IRS transcript and notice response, partnership and trust agreement analysis, and state tax nexus and sales tax registration studies. Every step and source stays visible for review, and a follow-up request adjusts the output.

Key facts

Offices: New York, United States (104 West 40th Street); Toronto, Canada (225 King Street West) Founded: 2015, by Benjamin Alarie, Albert Yoon and Anthony Niblett Chief executive: Benjamin Alarie Legal entity: Blue J Legal Inc. Funding stated by the company: US$176 million Series E announced on 10 November 2026, after a Series D led by Oak HC/FT and Sapphire Ventures in August 2025