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

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.

Sep 17, 2025 · Form W-4 Employee's Withholding Certificate Complete Form W-4 so that your employer can withhold the correct federal income tax from your pay. Form W-4 PDF

In the cases below, the following person must give Form W-9 to the partnership for purposes of establishing its U.S. status and avoiding withholding on its allocable share of net income from …

In the cases below, the following person must give Form W-9 to the partnership for purposes of establishing its U.S. status and avoiding withholding on its allocable share of net income from …

Therefore, if you are a U.S. person that is a partner in a partnership conducting a trade or business in the United States, provide Form W-9 to the partnership to establish your U.S. …

Use el Formulario W-9 sólo si usted es una persona de los EE. UU. (incluyendo a un extranjero residente) para proveer su TIN correcto. Precaución: Si usted no le provee el Formulario W-9 …

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A valid Form W-9, or a substitute form, must contain the payee's name and TIN and be signed and dated under penalties of perjury by the payee or a person authorized to sign for the payee.

Form W-9 (or an acceptable substitute) is used by persons required to file information returns with the IRS to get the payee's (or other person's) correct name and TIN.