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 - 10 of 10Find 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 8866 Interest Computation Under the Look-Back Method for Property Depreciated Under the Income Forecast Method 2018 Form 8866 Interest Computation Under the Look-Back Method for Property Depreciated Under the Income Forecast Method 2012 Form 8866 Interest Computation Under the Look-Back Method for Property Depreciated Under the Income Forecast Method 2002 Form 8866 Interest Computation Under the Look-Back Method for Property Depreciated Under the Income Forecast Method 1999 Instruction 8866 Instructions for Form 8866, Interest Computation Under the Look-Back Method for Property Depreciated Under the Income Forecast Method 2018 Instruction 8866 Instructions for Form 8866, Interest Computation Under the Look-Back Method for Property Depreciated Under the Income Forecast Method 2013 Instruction 8866 Instructions for Form 8866, Interest Computation Under the Look-Back Method for Property Depreciated Under the Income Forecast Method 2012 Instruction 8866 Instructions for Form 8866, Interest Computation Under the Look-Back Method for Property Depreciated Under the Income Forecast Method 2005 Instruction 8866 Instructions for Form 8866, Interest Computation Under the Look-Back Method for Property Depreciated Under the Income Forecast Method 2002 Instruction 8866 Instructions for Form 8866, Interest Computation Under the Look-Back Method for Property Depreciated Under the Income Forecast Method 1999