Blue J
Blue J · Blue J: AI Tax Research With Cited Answers, Plus Agentic Workflows for Return Review, IRS Notices and Tax Memos
Blue J is an AI tax research platform that answers tax questions in plain language with inline citations to primary law, Tax Notes and IBFD content, and drafts memos and client emails from the research. Its agentic Workflows, which review returns, prepare IRS notice responses and analyze partnership, LLC and trust agreements, were announced with a US$176M Series E in November 2026 and are not yet generally released (Blue J runs a waitlist). It suits CPA firms, sole practitioners, in-house tax teams and tax lawyers.
Best for
US and Canadian tax professionals, from sole practitioners and small CPA firms to national firms, in-house tax departments and law firm tax groups, who research tax questions often and need answers with citations they can verify and turn into memos and client emails
Not ideal for
Teams that need UK or other non-US, non-Canadian domestic tax coverage today, organizations that require data residency outside the US, on-premise deployment or no third-party model processing, developers who need an API, and firms looking for tax preparation or filing software rather than research and review
Who it's for
Tax professionals at CPA and accounting firms of every size, sole practitioners and enrolled agents, in-house corporate tax teams, and tax lawyers
Capabilities
- Conversational tax research: ask a question in plain language in a thread and get an answer in seconds, with AI-suggested follow-up questions
- Inline citations and a source list on every answer, with highlighting of the relevant source passage, a request-more-sources option and questions against a single source
- Tax content library of primary authoritative sources, case law and secondary sources, Tax Notes news and commentary, and IBFD international tax content; Blue J says its primary-source database is updated daily
- US federal and state and local tax (SALT) coverage on the US plan, and a Canadian income tax database on the Canadian plan
- File upload so returns, operating agreements and other client documents are analyzed alongside Blue J's tax content
- Projects that keep threads grounded in the same client or engagement documents across sessions
- Tax writing: drafts memos, client emails, IRS and tax authority responses, presentations and thought-leadership content from the research, with tone adjusted to the audience
- Export answers as PDF or DOCX, or copy and print them
- Workflows (not yet generally released; waitlist): pre-built, practitioner-designed agentic workflows that reason through multi-step tax jobs from your documents, pause for your input on judgment calls and show every step and source
- Sample Workflows announced for return review (1065 Technical Review), IRS notices (transcript review and account reconciliation, federal and state notice response), agreements (partnership allocations, trust agreement analysis), SALT (state nexus study, sales tax registration plan) and client communication
- Team plan adds SSO and custom access controls, firm-wide usage insights, guided onboarding and training, and dedicated customer support
- Blue J research inside Legora through an MCP integration (early access from October 2026, general availability planned for November 2026), with answers linking back to Blue J sources
Limitations
- Workflows, the agentic part of the product, was described as soon-to-be-released with a waitlist on Blue J's Series E page in November 2026, and no general release date is published; the generally available product is the research and drafting assistant
- Which Workflows ship first, and whether they are included in existing plans or priced separately, is not published
- The published US and UK pricing pages list US federal and SALT coverage; UK and wider international coverage is described as an expansion plan, and Canadian income tax is sold as a separate plan
- Uses large language models from OpenAI and Google rather than its own; Blue J says it has no-training agreements with both and is opted out of their abuse monitoring, but questions and uploaded files are processed by those providers
- All data is stored and processed in the AWS us-east-1 (North Virginia) region, with no other data residency option and no on-premise version
- Blue J's security page says uploaded files older than 24 hours are deleted automatically each day; it does not say how this applies to documents kept in Projects, so confirm before relying on long-running engagements
- No public API is documented; outside the web app, the only documented integration is Legora, which requires subscriptions to both products
- Plans are annual subscriptions; Team plan pricing is quoted by sales, and the SOC 2 Type 2 report is shared only under an NDA
Use cases
- Researching a federal or state tax question and getting a cited answer to check against the primary sources before advising a client
- Uploading a partnership or LLC operating agreement and asking how specific provisions affect the tax treatment
- Turning a research thread into a client email or internal tax memo with citations, then exporting it to Word
- Drafting a response to an IRS or state tax notice with the supporting authority
- Checking cross-border questions such as permanent establishment risk against IBFD treaty and country content
- Running a 1065 technical review or state nexus study as a Workflow once a firm has access
Our take
Blue J is a specialist tool, and that is its strength: a tax-only content library with Tax Notes and IBFD behind it, citations on every answer, and drafting that turns research into the memos and client emails practitioners actually send. A published individual price and a no-card trial also make it easy to test against an incumbent research service. The agentic story is still mostly ahead of it. Workflows, which would take a firm from a notice or a 1065 to a reviewable deliverable, were described as soon-to-be-released with a waitlist when the Series E was announced, so buy Blue J today for research and drafting, not for agents. Check two things before rolling it out firm-wide: every prompt and upload is processed by OpenAI or Google models and stored only in the US, and coverage is US federal and SALT or Canadian income tax, with UK work still a stated plan.
Who should use it
US and Canadian tax practitioners who spend hours a week on technical research and want cited answers they can verify, plus firms that want research to flow straight into memos, client emails and notice responses. Firms planning busy-season review capacity may also want to join the Workflows waitlist.
Who should skip it
UK or other non-US practices that need domestic coverage now, organizations whose policies rule out US-only data storage or third-party model processing of client files, teams that need an API or integrations with their tax preparation software, and buyers who want production-ready tax agents today rather than a research assistant with agents on a waitlist.
Strengths
- Built only for tax, with a curated library of primary sources, Tax Notes commentary and IBFD international content behind each answer
- Inline citations, source highlighting and single-source questions make answers checkable before they reach a client
- Goes from research to drafts: memos, client emails and notice responses, exported to PDF or DOCX
- Published self-serve price for individuals and a 7-day free trial with no card
- Detailed security page: annual SOC 2 Type 2 audit, named sub-processors, no-training agreements with its model providers and automatic deletion of uploaded files after 24 hours
- Workflows aim at real deliverables such as 1065 reviews, notice responses and nexus studies, with pauses for practitioner judgment
Weaknesses
- The agentic Workflows are not yet generally released (waitlist), so today's product is mainly a research and drafting assistant
- Domestic coverage is US federal and SALT, or Canadian income tax on a separate plan; UK coverage is still a plan
- Data is held only in the US, there is no on-premise option, and prompts and files go to OpenAI and Google models
- No public API, and Legora (both subscriptions required) is the only documented integration
- Annual subscriptions only, and Team pricing requires a sales conversation
Blue J pricing
Individual (US)
$1,498 per user
Billed annual
- Full US federal and SALT tax coverage
- Unlimited questions, drafting and file uploads
- Unlimited inline citations and source lists
- SOC 2 Type II compliant
- 7-day free trial, no credit card required
Team
Contact sales
Billed annual
- Everything in Individual
- Dedicated customer support
- Guided onboarding and training
- Firm-wide usage insights
- SSO and custom access controls
Free tier limits: No free tier; a 7-day free trial is available without a credit card.
Note: Plans are annual subscriptions; if you cancel, access continues to the end of the paid term. Extra seats are bought through support. Blue J's Canadian site lists an Individual plan with its Canadian income tax database at $1,999 per user per year (currency not stated on the page). Pricing for the agentic Workflows has not been published, and Enterprise options are handled by sales.
Technical specs
Modalities
Text, Documents
Available models
Where Blue J excels
Technical tax research with verifiable sources
Answers cite primary law, case law, Tax Notes and IBFD material inline, so a practitioner can check the authority before relying on it in client advice.
Research to client deliverable
The same thread that answers the question can draft the memo, client email or notice response and export it to DOCX for editing.
Agreement review for tax provisions
Uploading a partnership, LLC or trust agreement lets Blue J analyze its provisions against tax authority, and the announced agreement Workflows extend this to structured analyses with follow-up questions.
Testing an AI research tool before a firm-wide decision
A published individual price and a 7-day trial without a card let a practitioner compare Blue J with an existing research subscription before involving sales.
How Blue J fits alongside other tools
Blue J and Legora
Legora is an agentic platform for legal work across research, contract review and drafting. Blue J's tax research is available inside Legora through an MCP integration, so a law firm tax group can ask Blue J tax questions without leaving Legora; both subscriptions are required.
Blue J and Harvey
Harvey is a legal AI platform for law firms and in-house legal teams, covering drafting, contract review, due diligence and legal research. Blue J covers only tax and is aimed as much at accountants and CPA firms as at lawyers, with Tax Notes and IBFD tax content and planned workflows for returns, IRS notices and nexus studies. A law firm might use Harvey for general legal work and Blue J for tax questions.
Blue J and Clark
Clark runs autonomous AI agents on audit and accounting engagements for CPA firms, preparing workpapers and testing against client documents. Blue J serves the tax side of the same firms: researching tax questions, drafting memos and client emails, and, once Workflows ship, reviewing returns and notices.
Frequently asked questions
What is Blue J?
Blue J is an AI tax research platform from Blue J Legal Inc., founded in 2015. Tax professionals ask questions in plain language and get answers with inline citations to primary tax sources, case law, Tax Notes commentary and IBFD international content, and can turn the research into memos, client emails and notice responses. It is building agentic Workflows that carry multi-step tax jobs through to a finished deliverable.
What are Blue J Workflows, and are they available?
Workflows are pre-built, practitioner-designed agentic processes. You provide documents such as a return with K-1s, an IRS notice and transcripts, or a partnership or trust agreement, and Blue J works through the steps, pauses to ask you when a judgment call is needed, and returns a deliverable such as technical review notes, a cited response package with a client email, or a structured agreement analysis. Blue J's Series E page, published with its November 10, 2026 funding announcement, describes Workflows as soon-to-be-released and offers a waitlist, while the Workflows product page offers demos. No general release date or Workflows pricing has been published.
How much does Blue J cost?
On Blue J's US pricing page, the Individual plan costs $1,498 per user per year and includes US federal and SALT coverage with unlimited questions, drafting and file uploads. The Team plan, which adds SSO, onboarding, usage insights and dedicated support, is quoted by sales. Blue J's Canadian site lists an Individual plan with its Canadian income tax database at $1,999 per user per year. Plans are annual subscriptions, and there is a 7-day free trial with no credit card. Workflows pricing has not been published.
Which tax jurisdictions does Blue J cover?
The US plan covers US federal tax and state and local tax (SALT). Blue J sells a separate plan built on a Canadian income tax database, and IBFD content supports international and cross-border questions. Blue J says it plans to expand in the UK and internationally, but its UK pricing page currently lists the US federal and SALT plan.
Does Blue J train AI models on my data?
Blue J says customer data is not used to train generative AI models. It does not build its own models and uses large language models from OpenAI and Google, with which it has signed agreements prohibiting training on its data and has opted out of abuse monitoring. Uploaded files are processed by those providers, and files older than 24 hours are deleted automatically. Data is stored in AWS us-east-1, and Blue J holds a SOC 2 Type 2 report that it shares under an NDA.
Does Blue J work inside Legora?
Yes, for eligible joint customers. Legora and Blue J announced an MCP-based integration on October 19, 2026 that lets users with subscriptions to both products query Blue J from inside Legora, with inline citations linking to Blue J sources. It opened first to selected customers through early access, with general availability planned for November 2026.
Integrations & fit
About Blue J
Blue J, founded in 2015 and based in Toronto and New York, sells AI tax research rather than a general assistant. You ask a question in a conversational thread, and Blue J answers from its own tax content library: primary sources and case law, Tax Notes news and commentary, and IBFD's international tax material, with the primary-source database updated daily according to Blue J. Every answer carries inline citations and a source list; you can highlight the relevant passage, ask for more sources or question a single source, and turn the result into a memo, client email or IRS response draft that downloads as PDF or DOCX. You can attach client files such as returns and operating agreements, and Projects keep threads grounded in the same client or engagement documents. The US plan covers federal tax and state and local tax (SALT), the Canadian site sells a plan built on a Canadian income tax database, and IBFD content supports cross-border questions; UK and wider international expansion is a stated plan. The agentic layer is Workflows: instead of answering one question, a Workflow takes the documents behind a job, works through the steps, pauses to ask the practitioner on judgment calls, and returns a deliverable with every step and source visible. Blue J's samples include a 1065 partnership technical review, IRS transcript review, federal and state notice responses, partnership allocations and trust agreement analysis, state nexus studies, sales tax registration plans and client communications. Blue J's messaging on availability is mixed: its Series E page (November 10, 2026) calls Workflows soon-to-be-released and offers a waitlist, the Workflows page offers demos, and its site FAQ says the platform provides access to agentic workflows. Treat the research and drafting product as what you can buy today. The US Individual plan is $1,498 per user per year with a 7-day free trial and no card; Team plans are quoted by sales. Blue J's research is also available inside Legora through an MCP integration for customers who hold both subscriptions. The tradeoffs: Blue J does not train its own models and processes questions and uploaded files with OpenAI and Google models under no-training agreements, all data is stored in the AWS us-east-1 region with no other residency option or on-premise version, uploaded files are deleted automatically after 24 hours, and no public API is documented.
Updates from Blue J
Blue J announced a US$176 million Series E led by JMI Equity, with Oak HC/FT, Sapphire Ventures and Intrepid Growth Partners, which it says values the company at more than US$700 million. The money is to scale Workflows, its agentic AI for reviewing returns, preparing IRS notice responses, analyzing partnership, LLC and trust agreements, assessing multistate nexus and drafting client communications, and to expand in the UK and internationally. Blue J's Series E page calls Workflows soon-to-be-released and offers a waitlist. Blue J says more than 6,500 organizations use its platform.
Legora and Blue J announced an MCP-based integration that lets eligible joint customers query Blue J from inside Legora and get answers with inline citations linking to Blue J sources. Users need subscriptions to both products, and the research runs on Blue J's infrastructure. Early access opened first, with general availability planned for November 2026.
Blue J added IBFD's cross-border tax content, covering treaty analysis, country commentary and international tax guidance, to its content library so answers on topics such as permanent establishment, transfer pricing and Pillar Two can cite it.
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