Claude Aiwyn Tax connectorWhat Claude can do in your Aiwyn Tax account.
The Claude Aiwyn Tax connector exposes 9 tools. 8 read or compute without changing anything, 1 creates a document, 0 are undocumented. Here: how Claude turns your tax documents into an estimate and a 1040 PDF, the input rules that cause silent errors, and what it never files.
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What changes when Claude runs your numbers through Aiwyn
Aiwyn, formerly Column Tax, runs a tax calculation engine for US returns. With this connector you hand Claude your documents, a W-2 for instance, and it walks the engine's pipeline for you: it picks the right forms, checks the inputs, calculates the federal return alone or with one state return, and can produce a downloadable return PDF.
A first estimate from a W-2. tax_simple_return gives Claude a starter structure, an example and a guide for a simple scenario, and calculate_tax returns a summary of the calculation.
Catching mistakes before the math. check_tax validates the inputs first and flags errors and partial disqualifications, so you learn what is missing before trusting a figure.
A document to keep. generate_tax_pdf_tool starts the creation of an IRS or state formatted PDF and hands back a job number; Aiwyn documents a separate step to fetch the finished file.
What Claude will not do: no tool is described as filing a return with the IRS or a state, and the directory sheet speaks of estimating. It also covers federal plus 43 state jurisdictions, not every state. And nothing runs by itself: no tool recalculates when a new form arrives in your inbox. That kind of background job belongs to an automation tool, another trade; the Integrations hub covers that side.
Six words before you start
The vocabulary you will meet with Claude and Aiwyn.
- Connector
- The link you set up once between Claude and an outside service, so Claude can use it while it answers you.
- Tool
- One named capability a connector gives Claude. Claude picks the ones it needs by itself; the directory sheet lists each by name.
- Authorization
- The service's own sign-in screen, where you grant the access Claude will use. Given once, per person, and taken back the same way.
- Approval
- The confirmation Claude waits for before going ahead with something that changes an account, shown in the conversation when it matters.
- Namespace
- Aiwyn's word for one block of input, such as a W-2 or a form 1040 section. Each has a schema that says what it expects.
- MCP
- The shared standard behind connectors: it is what lets an assistant like Claude talk to an outside engine such as Aiwyn's.
Connect Aiwyn Tax to Claude in three steps
- 01
Find Aiwyn Tax in Claude
Open Claude's settings, go to Customize, then Connectors, and look for Aiwyn Tax in the list. On a Team or Enterprise workspace, an Owner or Primary Owner enables the connector before members can sign in.
- 02
Start the connection
Click Connect on its row and follow the window the service opens. If the link breaks later, Disconnect and connect again; access can also be withdrawn from the service itself.
- 03
Read the authorization screen
Look at the authorization screen before accepting. It belongs to the service, not to Claude, and the service decides what the access covers. Then share your documents and ask for an estimate.
The 9 Aiwyn Tax tools, by what they do
Aiwyn Tax (formerly Column Tax) gives Claude 9 tools: 8 that read your account, 1 that change something in it.
Eight tools look things up or compute without saving anything, one creates a PDF. Names stay exactly as Claude shows them.
- 8 read
- 1 write
What Claude reads or computes (8)
8 toolsEight tools that discover, validate and calculate, without creating anything.
check_tax
Checks a prepared return before any calculation and reports validation errors and partial disqualifications, so Claude can tell you what to fix first.
calculate_tax
Computes the full return for the chosen year and jurisdiction and returns a summary of the tax calculation, which Claude can walk you through.
tax_years
Lists every tax year the engine supports, which tells Claude which year codes it can use in the other calls.
tax_jurisdictions
Returns the jurisdictions available for a given tax year, federal and states, so Claude can confirm your state is handled before building anything.
tax_namespace_schema
Fetches the schema of one namespace, as a summary or in full, so Claude knows exactly which fields a W-2 or a state form expects.
tax_namespaces
Lists the input namespaces for one jurisdiction and one tax year, the two parameters it takes, showing Claude which input blocks a return there can contain.
tax_simple_return
Gives Claude a curated list of namespaces, an example input and a step-by-step guide for a scenario, either simple or with dependents. Aiwyn says to call it first.
generate_uuid_v5
Produces a deterministic identifier that ties a state entry back to its federal counterpart, which Aiwyn requires when a state block extends a federal list.
What Claude creates (1)
1 toolOne tool that produces a document. No source describes a confirmation for it: the general rule below applies.
generate_tax_pdf_tool
Approval: see the ruleLaunches the creation of an IRS or state formatted PDF of your return in the background and returns a job number; Aiwyn then describes polling for the download link.
What Claude asks before acting
By default, Claude stops and asks for your confirmation before any action it carries out on an account on your behalf. No source says whether that prompt appears for any Aiwyn tool, including the one that creates a PDF.
On a Team or Enterprise workspace, owners decide whether members may let certain actions through without being asked each time. They can also restrict what a connector may do for the whole organisation, keeping lookups and calculations while closing document creation, for example. Nobody overrides that from a personal account. Claude also works with the rights of the person who connected and nothing beyond them.
Which plans include it
None of the 819 sheets in the official directory shows plan availability. That information, connector by connector, is published nowhere: a real gap in the catalogue.
The general rule is public: remote connectors are open to all users on Claude, Cowork, Claude Desktop and mobile. On Team and Enterprise, an Owner or Primary Owner enables the connector for the organisation before members can connect. For this connector's current state, the directory sheet is the place to check.
Where this connector stops
A connector is not an automation. Claude calls these tools while it answers you: nothing starts when a new tax form lands in your mailbox.
The verification badge is not a security audit, and Anthropic writes on every sheet that it does not choose which tools a publisher exposes. Everything here comes from Aiwyn's documentation and the directory sheet; no Claude help article covers this connector. The sources also disagree on how many tools there are, detailed below. To compare with a connector built around a team's records, see the Claude activecampaign connector.
How many tools does the Aiwyn Tax connector expose?
- Claude directory sheet ↗October 2026Nine tools, among them generate_tax_pdf_tool, but no separate tool to fetch the finished PDF.
- Aiwyn documentation ↗undated, read October 2026A tenth tool polls the PDF job for its status and download link, after generation has started.
What this page followsThe publisher documents a tool the directory does not list. For what Claude actually exposes, the directory sheet is the reference: check it on your account, and if the PDF never comes back, that missing step is the likely reason.
Need help connecting Aiwyn Tax (formerly Column Tax) to Claude?
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