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

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Product Number Title Revision Date
Product Number Instruction SS-4 Title Instructions for Form SS-4, Application for Employer Identification Number (EIN) Revision Date 2019
Product Number Instruction SS-4 Title Instructions for Form SS-4, Application for Employer Identification Number Revision Date 2017
Product Number Instruction SS-4 Title Instructions for Form SS-4, Application for Employer Identification Number Revision Date 2016
Product Number Instruction SS-4 Title Instructions for Form SS-4, Application for Employer Identification Number Revision Date 2011
Product Number Instruction SS-4 Title Instructions for Form SS-4, Application for Employer Identification Number Revision Date 2010
Product Number Instruction SS-4 Title Instructions for Form SS-4, Application for Employer Identification Number Revision Date 2009
Product Number Instruction SS-4 Title Instructions for Form SS-4, Application for Employer Identification Number Revision Date 2007
Product Number Instruction SS-4 Title Instructions for Form SS-4, Application for Employer Identification Number Revision Date 2006
Product Number Instruction SS-4 Title Instructions for Form SS-4, Application for Employer Identification Number Revision Date 2003
Product Number Instruction SS-4 Title Instructions for Form SS-4, Application for Employer Identification Number Revision Date 2001
Product Number Instruction SS-4 Title Instructions for Form SS-4, Application for Employer Identification Number Revision Date 1985
Product Number Form SS-4 (PR) Title Application for Employer Identification Number (EIN) (Puerto Rico Version) Revision Date 2020
Product Number Form SS-4 (PR) Title Solicitud de Numero de Identificacion Patronal (EIN) Revision Date 2017
Product Number Form SS-4 (PR) Title Solicitud de Numero de Identificacion Patronal (EIN) Revision Date 2010
Product Number Instruction SS-4 (PR) Title Instructions for Form SS-4 (PR), Application for Employer Identification Number (Puerto Rico Version) Revision Date 2020
Product Number Instruction SS-4 (PR) Title Instructions for Form SS-4, Application for Employer Identification Number (EIN) (Puerto Rico Version) Revision Date 2017
Product Number Instruction SS-4 (PR) Title Instructions for Form SS-4, Application for Employer Identification Number (EIN) (Puerto Rico Version) Revision Date 2016
Product Number Instruction SS-4 (sp) Title Instructions for Form SS-4 (sp), Application for Employer Identification Number (Spanish Version) Revision Date 2023
Product Number Form SS-8 Title Determination of Worker Status for Purposes of Federal Employment Taxes and Income Tax Withholding Revision Date 2023
Product Number Form SS-8 Title Determination of Worker Status for Purposes of Federal Employment Taxes and Income Tax Withholding Revision Date 2014
Product Number Form SS-8 Title Determination of Worker Status for Purposes of Federal Employment Taxes and Income Tax Withholding Revision Date 2011
Product Number Form SS-8 Title Determination of Worker Status for Purposes of Federal Employment Taxes and Income Tax Withholding Revision Date 2009
Product Number Form SS-8 Title Determination of Worker Status for Purposes of Federal Employment Taxes and Income Tax Withholding Revision Date 2006
Product Number Form SS-8 Title Determination of Worker Status for Purposes of Federal Employment Taxes and Income Tax Withholding Revision Date 2003
Product Number Form SS-8 Title Determination of Worker Status for Purposes of Federal Employment Taxes and Income Tax Withholding Revision Date 2001