Form (Rev. March 2024) Department of the Treasury Internal Revenue Service

Sep 5, 2025 · Information about Form W-9, Request for Taxpayer Identification Number (TIN) and Certification, including recent updates, related forms, and instructions on how to file. Form W-9 is …

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For the latest developments related to Form W-9 and its instructions, such as legislation enacted after they were published, go to IRS.gov/FormW9.

Nov 26, 2025 · Find Form W-9, Form 1099 and instructions on filing electronically for independent contractors.

Request for Taxpayer Identification Number and Certiication Section references are to the Internal Revenue Code unless otherwise noted.

Información sobre el Formulario W-9 (SP), incluyendo actualizaciones recientes, formularios e instrucciones relacionados sobre cómo presentarlo. El Formulario W-9 (SP) se utiliza para proveer …

Part I Taxpayer Identification Number (TIN) Enter your TIN in the appropriate box. The TIN provided must match the name given on line 1 to avoid backup withholding. For individuals, this is generally …

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Request for Taxpayer (Rev. December 2014) Department of the Treasury