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 Mostrando 1 - 15 of 15Buscar ayuda Buscar Prior Year » RegExReplace » Product Number Prior Year » Revision Date Prior Year » Title Mostrar por página 2550100200 BuscarBorrar Número de producto Título Fecha de revisión Form 8879-I IRS e-file Signature Authorization for Form 1120-F 2021 Form 8879-I IRS e-file Signature Authorization for Form 1120-F 2020 Form 8879-I IRS e-file Signature Authorization for Form 1120-F 2019 Form 8879-I IRS e-file Signature Authorization for Form 1120-F 2018 Form 8879-I IRS e-file Signature Authorization for Form 1120-F 2017 Form 8879-I IRS e-file Signature Authorization for Form 1120-F 2016 Form 8879-I IRS e-file Signature Authorization for Form 1120-F 2015 Form 8879-I IRS e-file Signature Authorization for Form 1120-F 2014 Form 8879-I IRS e-file Signature Authorization for Form 1120-F 2013 Form 8879-I IRS e-file Signature Authorization for Form 1120-F 2012 Form 8879-I IRS e-file Signature Authorization for Form 1120-F 2011 Form 8879-I IRS e-file Signature Authorization for Form 1120-F 2010 Form 8879-I IRS e-file Signature Authorization for Form 1120-F 2009 Form 8879-I IRS e-file Signature Authorization for Form 1120-F 2008 Form 8879-I IRS e-file Signature Authorization for Form 1120-F 2007