# IRS API: Get tax form > Finds current IRS forms, instructions and publications by number or purpose. Each result has its revision and posting dates, PDF links and a short explanation. Unofficial. Not affiliated with or endorsed by IRS. - Page: https://fous.com/methods/irs.gov/get-tax-form - Method: `irs.gov/get_tax_form`, version 1 - Website: irs.gov - Returns: form number, title, type, revision date, posted date, PDF link, instructions PDF link, About page link, explanation - Effect: read (it gets data and changes nothing) - Sign-in: none needed - Cost: 1 credit per completed run (1ยข with pay as you go); failed runs are free - Verified: Nov 2, 2026 ## Inputs | Field | Type | Required | In the run below | Description | |---|---|---|---|---| | `form` | string | yes | `"W-9"` | The form number or what it is for, such as W-9 or change of address. | | `max_results` | integer | no | | Maximum number of matching products to return, for example 5. Default 5. | ## Output From a run on Oct 23, 2026, shortened. Its input: ```json { "form": "W-9" } ``` Its output: ```json { "forms": [ { "type": "form", "title": "Request for Taxpayer Identification Number and Certification", "pdf_link": "https://www.irs.gov/pub/irs-pdf/fw9.pdf", "explanation": "Form W-9 is used by U.S. persons to provide correct taxpayer identification number (TIN) to payers (or brokers) who are required to file information returns with IRS.", "form_number": "W-9", "posted_date": "2024-03-06", "revision_date": "Mar 2024", "about_page_link": "https://www.irs.gov/forms-pubs/about-form-w-9", "instructions_pdf_link": "https://www.irs.gov/pub/irs-pdf/iw9.pdf" }, { "type": "instructions", "title": "Instructions for the Requestor of Form W-9, Request for Taxpayer Identification Number and Certification", "pdf_link": "https://www.irs.gov/pub/irs-pdf/iw9.pdf", "explanation": "Form W-9 is used by U.S. persons to provide correct taxpayer identification number (TIN) to payers (or brokers) who are required to file information returns with IRS.", "form_number": "W-9", "posted_date": "2024-03-11", "revision_date": "Mar 2024", "about_page_link": "https://www.irs.gov/forms-pubs/about-form-w-9", "instructions_pdf_link": null }, { "type": "form", "title": "Request for Taxpayer Identification Number and Certification (Spanish Version)", "pdf_link": "https://www.irs.gov/pub/irs-pdf/fw9sp.pdf", "explanation": "Form W-9 (sp), Request for Taxpayer Identification Number and Certification (Spanish Version), is used by U.S. persons to provide correct taxpayer identification number (TIN) to payers (or brokers) who are required to file information returns with IRS.", "form_number": "W-9 (sp)", "posted_date": "2024-03-13", "revision_date": "Mar 2024", "about_page_link": "https://www.irs.gov/forms-pubs/about-form-w-9", "instructions_pdf_link": "https://www.irs.gov/pub/irs-pdf/iw9.pdf" } ] } ``` ## Run it From code, with a Fous API key in `FOUS_API_KEY`; the answer's `data` holds the output: ```bash curl https://api.fous.com/v1/runs \ -H "Authorization: Bearer $FOUS_API_KEY" \ -H "Content-Type: application/json" \ -d '{"method":"irs.gov/get_tax_form","input":{"form":"W-9"}}' ``` From an AI agent connected to the Fous MCP server: its `run` with the same method and input. To connect one, give it `set up https://fous.com/SKILL.md`. ## Ask your agent - Find the current revision of the W-9 form and its PDF link - I need the IRS form for reporting a change of address, with the posted date - Look up IRS Publication 17 and its latest revision date on irs.gov - Which IRS form do I use to request an extension for filing my return, and where is the instructions PDF? - Show me up to 8 IRS forms related to estimated tax payments, with their About page links ## Input schema ```json { "type": "object", "required": [ "form" ], "properties": { "form": { "type": "string", "minLength": 1, "description": "The form number or what it is for, such as W-9 or change of address." }, "max_results": { "type": "integer", "default": 5, "maximum": 20, "minimum": 1, "description": "Maximum number of matching products to return, for example 5." } } } ``` ## Output schema ```json { "type": "object", "required": [ "forms" ], "properties": { "forms": { "type": "array", "items": { "type": "object", "properties": { "type": { "type": "string" }, "title": { "type": "string" }, "pdf_link": { "type": "string" }, "explanation": { "type": [ "string", "null" ] }, "form_number": { "type": "string" }, "posted_date": { "type": [ "string", "null" ] }, "revision_date": { "type": [ "string", "null" ] }, "about_page_link": { "type": [ "string", "null" ] }, "instructions_pdf_link": { "type": [ "string", "null" ] } } } } } } ``` ## See more - [IRS API: Check charity status](https://fous.com/methods/irs.gov/check-charity-status.md): Looks up an organization in the IRS Tax Exempt Organization Search by name or EIN. 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