Find IRS forms, instructions, publications, and notices for prior years back to 1864. View more information about Using IRS Forms, Instructions, Publications and Other Item Files. Click on a column heading to sort the list by the contents of that column. Enter a term in the Find box Click the Search button Showing 1 - 25 of 37Find Help Find Prior Year » RegExReplace » Product Number Prior Year » Revision Date Prior Year » Title Show per page 2550100200 SearchClear Product Number Title Revision Date Instruction SS-4 (sp) Instructions for Form SS-4 (PR), Application for Employer Identification Number (Spanish Version) 2023 Instruction SS-4 Instructions for Form SS-4, Application for Employer Identification Number (EIN) 2023 Form SS-4 Application for Employer Identification Number 2023 Instruction SS-4 (PR) Instructions for Form SS-4 (PR), Application for Employer Identification Number (Puerto Rico Version) 2020 Form SS-4 (PR) Application for Employer Identification Number (EIN) (Puerto Rico Version) 2020 Form SS-4 Application for Employer Identification Number 2019 Instruction SS-4 Instructions for Form SS-4, Application for Employer Identification Number (EIN) 2019 Form SS-4 (PR) Solicitud de Numero de Identificacion Patronal (EIN) 2017 Instruction SS-4 (PR) Instructions for Form SS-4, Application for Employer Identification Number (EIN) (Puerto Rico Version) 2017 Form SS-4 Application for Employer Identification Number 2017 Instruction SS-4 Instructions for Form SS-4, Application for Employer Identification Number 2017 Instruction SS-4 Instructions for Form SS-4, Application for Employer Identification Number 2016 Instruction SS-4 (PR) Instructions for Form SS-4, Application for Employer Identification Number (EIN) (Puerto Rico Version) 2016 Instruction SS-4 Instructions for Form SS-4, Application for Employer Identification Number 2011 Form SS-4 (PR) Solicitud de Numero de Identificacion Patronal (EIN) 2010 Instruction SS-4 Instructions for Form SS-4, Application for Employer Identification Number 2010 Form SS-4 Application for Employer Identification Number 2010 Instruction SS-4 Instructions for Form SS-4, Application for Employer Identification Number 2009 Form SS-4 Application for Employer Identification Number 2009 Instruction SS-4 Instructions for Form SS-4, Application for Employer Identification Number 2007 Form SS-4 Application for Employer Identification Number 2007 Instruction SS-4 Instructions for Form SS-4, Application for Employer Identification Number 2006 Form SS-4 Application for Employer Identification Number 2006 Instruction SS-4 Instructions for Form SS-4, Application for Employer Identification Number 2003 Form SS-4 Application for Employer Identification Number 2001 Pagination Current page 1 Page 2 Next page Next Last page Last »