AI Tax Research Tool
Ask a tax question inside Claude or ChatGPT and retrieve the relevant Internal Revenue Code, Treasury Regulations, IRS Publications, Revenue Rulings, Notices, state tax codes, and U.S. Tax Court opinions—with a link back to the source.
Why It's Different
Tax research needs a source you can inspect before you rely on the answer.
01 · Generic AI
Asked about a niche topic, plain ChatGPT or Claude will happily cite §199A(d)(4)(C) when no such subsection exists. The number sounds plausible, which is worse than no answer at all.
02 · Generic AI
Model training has a cutoff. The IRC, regs, and rulings do not. Anything passed, amended, or revoked after the cutoff is invisible to the model unless something gives it access to the current text.
03 · Generic AI
An answer without a source URL or exact subsection is hard to verify, share, or preserve in a workpaper.
Demo
My client is a 1099 graphic designer working from her dining table 3 days a week. Can she take the home office deduction?
Under §280A(c)(1), the space must be used both regularly and exclusively for business. A dining table used for family meals fails the exclusivity test.
She could qualify if she dedicates a separately identifiable area used only for the business, but a shared dining table does not. See Pub. 587 on what counts as a qualifying space.
In Practice
Draft the analysis section of a memo in the same chat where you research the issue. Section numbers, regs, and rulings are already cited and verifiable.
“Show me §199A(d).” “What does Reg. 1.469-5T say about material participation?” Direct lookups return the current text, not a paraphrase.
Start with a section and walk every regulation, ruling, and related provision that cites it (or that it cites) without flipping between five browser tabs.
Paste in a paragraph from a chatbot or a brief and ask for the cited source. If the citation is fake, you'll know immediately.
FAQ
Every answer is grounded in the actual text of the Internal Revenue Code, Treasury Regulations, IRS Publications, Revenue Rulings, and IRS Notices. The model retrieves the relevant passages from a current, indexed corpus and cites them by section number with a link to the official government source. It is not generating section numbers from memory.
Citations are pulled from indexed primary sources rather than generated. Each result includes a URL to the official publisher—typically the U.S. House, eCFR, or IRS.gov—so you can confirm the section, text, and applicable version yourself.
No. You research the way you already do, by asking your AI assistant. taxmcp.io connects to Claude Desktop, ChatGPT, and any other MCP-compatible client, then sits in the background. You just ask questions in plain English and get cited answers in the same chat.
Yes. The free plan includes 20 searches per day against the Internal Revenue Code with full citations. Enough to test it against the kinds of questions you ask most often before deciding whether to upgrade.
Free to start. Connect in minutes, then test it on a question you already need to research.
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