Intuit TurboTax

What the Intuit TurboTax connector does

The Intuit TurboTax MCP server lets Claude, ChatGPT and other MCP agents estimate a US federal refund or balance owed, compare TurboTax filing options, and reach a live tax expert. Anthropic lists three tools; Intuit documents five. Nothing in the surface files or amends a return — filing stays inside TurboTax behind payment and explicit consent.

Intuit TurboTax tools (3)

• tax_filing_options
• tax_estimate
• expert_search

Tool names from Anthropic's directory listing. This server requires sign-in, so we could not read tool descriptions or parameter schemas.

Limits

• The directory under-lists, and the gap contains the only write. Anthropic's snapshot records three tools; Intuit's Claude article documents five. The two extras are a document checklist and a document upload, and the upload is the sole write-shaped capability described anywhere in this surface. A verb census of the three listed names returns zero writes and is therefore misleading.
• We could not verify either list against the server. The endpoint returned an authentication challenge to an anonymous request, so no tools/list was ever read. Both enumerations are second-hand, and neither is confirmed.
• No tool schemas or safety annotations are published here. With no handshake there is no parameter detail, so we cannot rule out a tool taking an action or operation as an argument.
• No OAuth scopes are published. The RFC 9728 probes returned Intuit's generic authentication error rather than a resource descriptor, so scopes_supported could not be read and no scope-level boundary between reading an estimate and uploading a document can be shown to exist.
• US federal only, 2025 tax year only. Intuit states the app is built for US timezones and supports US federal taxes for 2025. No state returns, no other jurisdictions, no other years.
• Intuit disclaims the numbers. Its article states the estimates in Claude are for reference only. Do not treat an agent's output as a tax position.
• Intuit's two articles contradict each other on prerequisites. The Claude article requires a TurboTax account for the connection and the tools; the ChatGPT article states no account is needed for most tools, only for checklist and upload. Both were published by Intuit. We did not resolve which applies to a Claude user who has none.
• The tool names differ between the two articles too. What the Claude article calls expert search, the ChatGPT article calls expert connect and credits with booking an appointment — a capability the Claude article does not mention. Whether that is a naming difference or a capability difference is unresolved.
• Part of the interaction happens in embedded UI. The directory records has_mcp_app: true and Intuit describes widget-rendered results, so some of what the user sees and selects is not visible in the tool-call transcript.
• Data flows to Intuit by design, and back to the model. Intuit states both directions explicitly. There is no configuration described that keeps tax figures out of Intuit's platform while still using the estimator.
• Whether an expert engagement incurs a charge is unresolved. Expert tiers are paid TurboTax products, and neither article states where in the flow payment is taken. We did not test it.
• The endpoint is fronted by an edge that refuses every anonymous request, so its auth posture is unverifiable from outside. Anonymous POST initialize, plain GET, browser-user-agent GET and the host root all return HTTP 403 with an Akamai "Access Denied" body and no www-authenticate header. That is the CDN talking, not the MCP server, so nothing here confirms or denies how the origin authenticates — we record OAuth from Intuit's documentation alone, and authVerified is false. Twenty-seven directory entries share this 403 shape, so a 403 in automated probe data should be read as "not observed", never as the server's own answer.

Frequently asked questions

Sources

• Intuit TurboTax help article, "How do I access TurboTax tools in Claude?" (retrieved 2026-08-22; Intuit's own metadata gives a last-published date of 2026-08-11). Prose was recovered from the page's __NEXT_DATA__ block, which carries the article body. · retrieved 2026-08-22
• Intuit TurboTax help article, "How do I access TurboTax tools in ChatGPT?" (retrieved 2026-08-22). Used only for the documented contradictions noted above. · retrieved 2026-08-22
• Intuit TurboTax online license terms, filing and payment conditions (retrieved 2026-08-22) · retrieved 2026-08-22
• Intuit Global Privacy Statement, identity-verification data and Tax Return Information (retrieved 2026-08-22) · retrieved 2026-08-22
• ttlc.intuit.com/robots.txt — checked 2026-08-22. The help-article path is not disallowed; the file's exclusions target community and widget paths. No Content-Signal directive is present. · retrieved 2026-08-22
• Live auth posture check, 2026-08-22: every request shape we tried — anonymous POST initialize, plain GET, GET with a browser user-agent, and the host root — returned HTTP 403 carrying an Akamai "Access Denied" HTML body (reference #18.5c), with no www-authenticate header. Path-shape probes (arbitrary GUID, absent GUID, wrong version segment) returned the identical response, which establishes that the GUID is not resolved before the request is refused. Because the edge answers first, the origin's own authentication posture was never observed from outside; authMode is taken from Intuit's documentation, not from the wire. · retrieved 2026-08-22
• RFC 9728 probes under both the endpoint path and the host root, 2026-08-22 — all returned Intuit's authentication error or an edge denial; no resource descriptor was served. · retrieved 2026-08-22
• Anthropic Connectors Directory entry — , read from our directory snapshot dated 2026-08-16 · retrieved 2026-08-16
• TurboTax support — · Privacy