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 - 46 of 46Find Help Find Prior Year » RegExReplace » Product Number Prior Year » Revision Date Prior Year » Title Show per page 2550100200 SearchClear Product Number Title Revision Date Form 8878 IRS e-file Signature Authorization for Form 4868 or Form 2350 2023 Form 8878 IRS e-file Signature Authorization for Form 4868 or Form 2350 2022 Form 8878 IRS e-file Signature Authorization for Form 4868 or Form 2350 2021 Form 8878 IRS e-file Signature Authorization for Form 4868 or Form 2350 2020 Form 8878 IRS e-file Signature Authorization for Form 4868 or Form 2350 2019 Form 8878 IRS e-file Signature Authorization for Form 4868 or Form 2350 2018 Form 8878 IRS e-file Signature Authorization for Form 4868 or Form 2350 2017 Form 8878 IRS e-file Signature Authorization for Form 4868 or Form 2350 2016 Form 8878 IRS e-file Signature Authorization for Form 4868 or Form 2350 2015 Form 8878 IRS e-file Signature Authorization for Form 4868 or Form 2350 2014 Form 8878 IRS e-file Signature Authorization for Form 4868 or Form 2350 2013 Form 8878 IRS e-file Signature Authorization for Form 4868 or Form 2350 2012 Form 8878 IRS e-file Signature Authorization for Form 4868 or Form 2350 2011 Form 8878 IRS e-file Signature Authorization for Form 4868 or Form 2350 2010 Form 8878 IRS e-file Signature Authorization for Form 4868 or Form 2350 2009 Form 8878 IRS e-file Signature Authorization for Form 4868 or Form 2350 2008 Form 8878 IRS e-file Signature Authorization for Form 4868 or Form 2350 2007 Form 8878 IRS e-file Signature Authorization for Form 4868 or Form 2350 2006 Form 8878 IRS e-file Signature Authorization for Form 4868 or Form 2350 2005 Form 8878 IRS e-file Signature Authorization-Application for Extension of Time to File 2004 Form 8878 IRS e-file Signature Authorization-Application for Extension of Time to File 2003 Form 8878 IRS e-file Signature Authorization-Application for Extension of Time to File 2002 Form 8878 IRS e-file Signature Authorization-Application for Extension of Time to File 2001 Form 8878-A IRS e-file Electronic Funds Withdrawal Authorization for Form 7004 2008 Form 8878-A IRS e-file Electronic Funds Withdrawal Authorization for Form 7004 2005 Form 8878-A IRS e-file Electronic Funds Withdrawal Authorization for Form 7004 2004 Form 8878 (sp) IRS e-file Signature Authorization for Form 4868 (sp) or Form 2350 (sp) (Spanish Version) 2023 Form 8878 (sp) IRS e-file Signature Authorization for Form 4868 (SP) or Form 2350 (SP) (Spanish Version) 2022 Form 8878 (sp) IRS e-file Signature Authorization for Form 4868 (SP) or Form 2350 (SP) (Spanish Version) 2021 Form 8878 (SP) IRS e-file Signature Authorization for Form 4868 (SP) or Form 2350 (SP) (Spanish Version) 2020 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
