Keep one tax document folder labeled with the current year, and add papers to it as they collect throughout the year.  Once your taxes have been filed for this year, transfer the documents to a bin labeled past tax documents, and write the specific years that are included in the bin.  Include with your past tax documents,  all your supporting tax papers, financial records for that year, and proof of tax payment.  Store the bin in a remote area.  Start a new tax folder for the next year.