Blue J

Blue J is an AI tax research platform that answers tax questions with cited, verifiable sources for accountants, tax lawyers and corporate tax teams. Instead of making professionals run keyword searches through a traditional tax library, it returns a direct answer with in-line citations to primary authority and expert commentary, so the user can check the reasoning and move on to advising the client.

What is Blue J used for?

Tax professionals use Blue J to shorten research time on client questions and to produce written work faster.

• Answering US federal and state and local tax questions in plain language with in-line citations
• Drawing on primary sources, case law and secondary materials, including Tax Notes and IBFD content
• Uploading and analyzing client documents alongside the research
• Asking follow-up questions or querying a single source in depth
• Generating client memos and emails and downloading answers as PDF or DOCX
• Researching Canadian tax through Blue J's Canada product

Who Blue J is best for

Blue J suits sole practitioners, small and mid-size CPA firms, and larger firms that want a research tool staff at every level will actually use. Its own messaging covers everyone from sole practitioners to Big 4 teams. People looking for software to prepare and file returns, or consumers with personal tax questions, need a different kind of product.

Blue J pricing

As of October 2026, Blue J's Individual plan for sole practitioners costs $1,498 per user per year. It includes full US federal and SALT coverage, unlimited questions, drafting and file uploads, unlimited in-line citations and source lists, and SOC 2 Type II compliance. The Team plan for firms with several tax professionals adds dedicated customer support, guided onboarding and training, firm-wide usage insights, and SSO with custom access controls, with pricing from sales. A 7-day free trial is available with no credit card required.

Limitations to keep in mind

• Team and firm pricing is not public
• It is a research tool, so return preparation and filing happen elsewhere
• AI answers still need professional judgment, especially on novel or fact-specific issues
• The annual individual plan is a commitment for occasional researchers

Blue J vs alternatives

Taylor CPAI by Deduction is an AI tax assistant focused on filing help and tax advice, which may suit users who want guidance rather than a professional research library. Perplexity can surface quick answers with web citations, but it does not draw on curated tax authority like Tax Notes. ChatGPT is useful for explaining concepts but cannot be relied on for current, cited tax law. Harvey covers legal research broadly at large firms, though tax is only one part of it, and Blue J has partnered with Legora to connect tax and legal research. Blue J wins for tax professionals who want fast, cited answers grounded in authoritative tax content.

Tips for getting started with Blue J

Use the trial on questions you researched recently so you can compare Blue J's answer and sources with your own conclusions. Follow citations to the source text the first few times to build trust in how it summarizes authority. Use the memo and email drafting feature to turn a finished answer into client communication, then edit it in your own voice.

Blue J FAQ

Is Blue J free?

No, but Blue J offers a 7-day free trial with no credit card required. The Individual plan then costs $1,498 per user per year.

What is Blue J used for?

Blue J is used for AI tax research, giving cited answers to federal and state tax questions and drafting client memos and emails from those answers.

What sources does Blue J use?

Blue J answers from curated primary authority, case law and secondary sources, including Tax Notes and IBFD content, with an authoritative database updated daily.

Does Blue J cover Canadian tax?

Yes. Blue J offers a Canadian version alongside its US product, which covers federal and state and local tax.