TaxMCP
Searches US tax law in ChatGPT, including the tax code, regulations, IRS guidance and Tax Court opinions, with citations.
What TaxMCP can do in ChatGPT
US tax law search with source links.
Tax Law Search
Search the code, regulations and guidance at once.
Section Lookup
Open a specific IRC section or regulation directly.
Tax Court Opinions
Find and read relevant Tax Court cases.
Citation Activity
See how often a case has been cited.
Cross References
Map links between statutes in the tax code.
You stay in control
You approve access, and you can disconnect TaxMCP at any time.
Apps 1
What TaxMCP does in ChatGPT
The TaxMCP plugin gives ChatGPT access to US tax authority with citations attached. It searches and pulls up the Internal Revenue Code, Treasury Regulations, IRS publications and guidance, selected state tax statutes and US Tax Court opinions, so answers rest on the actual sources.
It has seven read-only research tools: broad tax law search, direct section lookup, IRS publication and guidance retrieval, Tax Court opinion retrieval, research into how often a case is cited, and analysis of cross-references between statutes. Results include source identifiers and links so you can read the original.
It is built for CPAs, enrolled agents, tax attorneys and researchers. Treat it as a research helper, not a lawyer or tax adviser. It will not file a return, send in a form, pay anything or change any record. Its citation counts do not replace a full case validity check.
Who it is for
- CPAs and enrolled agents
- Tax attorneys
- Tax researchers and students
How to add TaxMCP to ChatGPT
- Open the TaxMCP listing in ChatGPT ↗.
- Click Install plugin.
- Sign in to your TaxMCP account when asked and approve the access it requests.
- Start a chat and ask for what you need, mentioning TaxMCP if ChatGPT does not pick it up.
- To stop, disconnect TaxMCP under apps in your ChatGPT settings.
Questions about TaxMCP
What is the TaxMCP ChatGPT plugin?
The TaxMCP plugin gives ChatGPT access to US tax authority with citations attached. It searches and pulls up the Internal Revenue Code, Treasury Regulations, IRS publications and guidance, selected state tax statutes and US Tax Court opinions, so answers rest on the actual sources. It is listed in ChatGPT's plugin marketplace under Education & Research.
What can I ask TaxMCP to do in ChatGPT?
For example: "Research the requirements for IRC §1202 and cite the controlling authority", "Find the current bonus depreciation rules and their effective dates", "Find Tax Court opinions on reasonable pay for S corporation shareholders".
Who makes the TaxMCP plugin for ChatGPT?
The ChatGPT listing names Gray & Company as the developer. The version listed on 8 October 2026 was 1.0.0.
How do I add TaxMCP to ChatGPT?
Open the TaxMCP listing in ChatGPT, click Install plugin, sign in to your TaxMCP account and approve the access it asks for. Then ask for what you need in a chat, mentioning TaxMCP if ChatGPT does not pick it up.
Can TaxMCP change things in my account, or only read?
It searches and retrieves public US tax law sources with citation links. The listing says it does not file returns, submit forms, make payments or edit records.
Who is the TaxMCP plugin for?
CPAs and enrolled agents, tax attorneys and tax researchers and students.
Can TaxMCP tell me if a case is still good law?
It can show case citation activity, but the listing says this is not a substitute for Shepard's, KeyCite or another current-validity check.
Does it cover state tax law?
It includes selected state tax statutes alongside federal sources.
Does TaxMCP see my ChatGPT chats?
When TaxMCP is connected, ChatGPT may share the parts of your chats and memories that matter for a request with TaxMCP. What TaxMCP does with that data falls under its own terms and privacy policy. ChatGPT keeps your training-data settings, and you can disconnect at any time.
How do I disconnect TaxMCP from ChatGPT?
Open your ChatGPT settings, go to apps, and disconnect TaxMCP. You can reconnect later from the listing.
What are alternatives to TaxMCP in ChatGPT?
Similar plugins in the ChatGPT marketplace include CourtListener, OpenRegs: Regulatory Research and CiteCheck. Each has its own page in this directory.
Privacy and your data
When TaxMCP is connected, ChatGPT may share the parts of your chats and memories that matter for a request with TaxMCP. What TaxMCP then does with that data falls under its own terms and privacy policy, not only OpenAI's. ChatGPT keeps your training-data settings for data that comes from connected apps, and you can disconnect at any time.
TaxMCP privacy policy ↗TaxMCP terms ↗OpenAI: apps in ChatGPT ↗