Find IRS forms, instructions, publications, and notices for prior years back to 1864.

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Form W-9S Request for Student's or Borrower's Taxpayer Identification Number and Certification 1998
Form W-9S Request for Student's or Borrower's Taxpayer Identification Number and Certification 1997
Form W-9 (sp) Request for Taxpayer Identification Number and Certification (Spanish Version) 2024
Form W-9 (SP) Solicitud y Certificacion del Numero de Identificacion del Contribuyente 2018
Form W-9 (SP) Solicitud y Certificacion del Numero de Identificacion del Contribuyente 2017
Form W-9 (SP) Solicitud y Certificacion del Numero de Identificacion del Contribuyente 2015
Form W-9 (SP) Solicitud y Certificacion del Numero de Identificacion del Contribuyente 2013
Form W-9 (SP) Solicitud y Certificacion del Numero de Identificacion del Contribuyente 2011
Instruction W-9 (sp) Instructions for the Requestor of Form W-9 (sp), Request for Taxpayer Identification Number and Certification (Spanish Version) 2024
Instruction W-9 (SP) Instrucciones para el Solicitante del Formulario W-9(SP), Solicitud y Certificacion del Numero de Identificacion del Contribuyente 2018
Instruction W-9 (SP) Instrucciones para el Solicitante del Formulario W-9(SP), Solicitud y Certificacion del Numero de Identificacion del Contribuyente 2017
Instruction W-9 (SP) Instrucciones para el Solicitante del Formulario W-9(SP), Solicitud y Certificacion del Numero de Identificacion del Contribuyente 2015
Instruction W-9 (SP) Instrucciones para el Solicitante del Formulario W-9(SP), Solicitud y Certificacion del Numero de Identificacion del Contribuyente 2013
Form W-10 Dependent Care Provider's Identification and Certification 2020
Form W-10 Dependent Care Provider's Identification and Certification 2019
Form W-10 Dependent Care Provider's Identification and Certification 2018
Form W-10 Dependent Care Provider's Identification and Certification 2016
Form W-10 Dependent Care Provider's Identification and Certification 2015
Form W-10 Dependent Care Provider's Identification and Certification 2011
Form W-10 Dependent Care Provider's Identification and Certification 2009
Form W-10 Dependent Care Provider's Identification and Certification 1996
Form W-10 Dependent Care Provider's Identification and Certification 1994
Form W-10 Dependent Care Provider's Identification and Certification 1992
Form W-10 Dependent Care Provider's Identification and Certification 1990
Form W-10 Dependent Care Provider's Identification and Certification 1989

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