Find IRS forms, instructions, publications, and notices for prior years back to 1864. If a PDF file won't open, try downloading the file to your device and opening it using Adobe Acrobat. 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 20376 - 20400 of 22947Find Help Find Prior Year » RegExReplace » Product Number Prior Year » Revision Date Prior Year » Title Show per page 2550100200 Search Product Number Title Revision Date Form 8878 (SP) IRS e-file Signature Authorization for Form 4868 (SP) or Form 2350 (SP) (Spanish Version) 2019 Form 8878 (SP) IRS e-file Signature Authorization for Application for Extension of Time to File Form 4868 (SP) or Form 2350 (SP) (Spanish version) 2018 Form 8878 (SP) IRS e-file Signature Authorization for Application for Extension of Time to File Form 4868 (SP) or Form 2350 (SP) (Spanish version) 2017 Form 8878 (SP) IRS e-file Signature Authorization for Application for Extension of Time to File Form 4868 (SP) or Form 2350 (SP) (Spanish version) 2016 Form 8878 (SP) IRS e-file Signature Authorization for Application for Extension of Time to File Form 4868 (SP) or Form 2350 (SP) (Spanish version) 2015 Form 8878 (SP) IRS e-file Signature Authorization for Application for Extension of Time to File Form 4868 (SP) or Form 2350 (SP) (Spanish version) 2014 Form 8878 (SP) IRS e-file Signature Authorization for Application for Extension of Time to File Form 4868 (SP) or Form 2350 (SP) (Spanish version) 2013 Form 8878 (SP) IRS e-file Signature Authorization for Application for Extension of Time to File Form 4868 (SP) or Form 2350 (SP) (Spanish version) 2012 Form 8878 (SP) IRS e-file Signature Authorization for Application for Extension of Time to File Form 4868 (SP) or Form 2350 (SP) (Spanish version) 2011 Form 8878 (SP) IRS e-file Signature Authorization for Application for Extension of Time to File Form 4868 (SP) or Form 2350 (SP) (Spanish version) 2010 Form 8878 (SP) IRS e-file Signature Authorization for Application for Extension of Time to File Form 4868 (SP) or Form 2350 (SP) (Spanish version) 2009 Form 8878 (SP) IRS e-file Signature Authorization for Application for Extension of Time to File Form 4868 (SP) or Form 2350 (SP) (Spanish version) 2008 Form 8878 (SP) IRS e-file Signature Authorization for Application for Extension of Time to File Form 4868 (SP) or Form 2350 (SP) (Spanish version) 2007 Form 8878 (SP) IRS e-file Signature Authorization for Application for Extension of Time to File Form 4868 (SP) or Form 2350 (SP) (Spanish version) 2006 Form 8878 (SP) IRS e-file Signature Authorization for Application for Extension of Time to File Form 4868 (SP) or Form 2350 (SP) (Spanish version) 2005 Form 8878 (SP) IRS e-file Signature Authorization-Application for Extension of Time to File (Spanish version) 2004 Form 8879 IRS e-file Signature Authorization 2021 Form 8879 IRS e-file Signature Authorization 2019 Form 8879 IRS e-file Signature Authorization 2018 Form 8879 IRS e-file Signature Authorization 2017 Form 8879 IRS e-file Signature Authorization 2016 Form 8879 IRS e-file Signature Authorization 2015 Form 8879 IRS e-file Signature Authorization 2014 Form 8879 IRS e-file Signature Authorization 2013 Form 8879 IRS e-file Signature Authorization 2012 Pagination First page « First Previous page Previous … Page 812 Page 813 Page 814 Page 815 Current page 816 Page 817 Page 818 Page 819 Page 820 … Next page Next Last page Last »