Known issues and solutions are temporary workaround solutions to allow returns to be e-filed. A separate known issues and solutions file is available for each tax year. Known issues and solutions reference back to tax year 2006, prepared in 2007. Note: The known issues and solutions Excel spreadsheet has been updated and reflects open and resolved items on the same page. Content within the spreadsheet has not changed. Files for known issues and solutions Tax year Known issues and solutions files by form series 2024 720/94x/990/1040/1040-NR/1041/1042/1065/1120/1120-POL/2290/4868/7004/8849/8868 XLSX (updated 12/12/2024) 2023 720/94x/990/1040/1040-NR/1041/1042/1065/1120/1120-POL/2290/4868/7004/8849/8868 XLSX (updated 11/8/2024) 2022 720/94x/990/1040/1040-NR/1041/1042/1065/1120/1120-POL/2290/4868/7004/8849/8868 XLSX (updated 10/22/2024) 2021 1120/1065/7004/1040/1040NR/4868/990/1120POL/8868/94x/1041/720/2290/8849 XLSX (updated 3/26/2024) 2020 1120/1065/7004/1040/1040NR/4868/990/1120POL/8868/94x/1041/720/2290/8849 XLSX (updated 2/23/2023) 2019 1120/1065/7004/1040/1040NR/4868/990/1120POL/8868/94x/1041/720/2290/8849 XLSX (updated 5/18/2022) 2018 1120/1065/7004/1040/1040NR/4868/990/1120POL/8868/94x/1041/720/2290/8849 XLSX (updated 8/7/2020) 2017 1120/1065/7004/1040/1040NR/4868/990/1120POL/8868/94x/1041/720/2290/8849 XLSX (updated 10/31/2018) 2016 1120/1065/7004/1040/1040NR/4868/990/1120POL/8868/94x/1041/720/2290/8849 XLSX (updated 3/29/2018) 2015 1120/1065/7004/1040/4868/990/1120POL/8868/94x/1041 XLSX (updated 7/27/2016) 2014 1120/1065/7004/1040/4868/990/1120POL/8868/94x/1041 XLS (updated 4/12/2016) 2013 1120/1065/7004/1040/4868/990/1120POL/8868/94x/1041 XLS (updated 7/7/2016) 2012 1120/1065/7004/1040/4868/990/1120POL/8868 PDF (updated 6/26/2013) 2011 1120/1065/7004/1040/4868 XLS (updated 10/4/2012) 2010 1120/1065/7004/1040/4868 XLS (updated 9/13/2011) 2009 1120/1065/7004 XLS (updated 11/19/2010) 2008 1120/1065/7004 XLS (updated 9/3/2010) 2007 1120/1065/7004 XLS (updated 8/24/2010) 2006 1120/1065/7004 PDF (updated 6/29/2007) Modernized e-File (MeF) schemas and business rules
