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 1 - 12 of 12Find 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 6497 Information Return of Nontaxable Energy Grants or Subsidized Energy Financing 2019 Form 6497 Information Return of Nontaxable Energy Grants or Subsidized Energy Financing 2011 Form 6497 Information Return of Nontaxable Energy Grants or Subsidized Energy Financing 2007 Form 6497 Information Return of Nontaxable Energy Grants or Subsidized Energy Financing 2004 Form 6497 Information Return of Nontaxable Energy Grants or Subsidized Energy Financing 1998 Form 6497 Information Return of Nontaxable Energy Grants or Subsidized Energy Financing 1995 Form 6497 Information Return of Nontaxable Energy Grants or Subsidized Energy Financing 1993 Form 6497 Information Return of Nontaxable Energy Grants or Subsidized Energy Financing 1990 Form 6497 Information Return of Nontaxable Energy Grants or Subsidized Energy Financing 1987 Form 6497 Information Return of Nontaxable Energy Grants or Subsidized Energy Financing 1985 Form 6497 Information Return of Nontaxable Energy Grants or Subsidized Energy Financing 1982 Form 6497 Information Return of Nontaxable Energy Grants or Subsidized Energy Financing 1981