Download CIS Verification Request Spreadsheet   Download CIS Verification Request Spreadsheet Always download and read the instructions before you populate your data into the spreadsheet.   Instruction for CIS Verification Request Spreadsheet ( Contractor ) CIS Verification Request Spreadsheet document ( Contractor )   Instruction for CIS Verification Request Spreadsheet ( Subcontractor ) CIS Verification Request Spreadsheet document ( Subcontractor ) Once downloaded, you should enter your data into the Spreadsheet and save it in a CSV format. Then select Upload CSV Data from the Tasking Zone to save the spreadsheet back to our server in a CSV format ready for eFiling