The Wisconsin WT-6 Withholding form is a crucial tool for employers who need to report income tax withheld from employee wages. This form is specifically designed for those who have received an electronic filing waiver from the Wisconsin Department of Revenue. To complete the WT-6 voucher accurately, employers must provide their 15-digit Wisconsin tax number, specify the year, and indicate the appropriate filing frequency assigned to them. It is essential to fill in the reporting period correctly; for quarterly filers, this means selecting the last month of the quarter, such as March, June, September, or December. The form comes with specific instructions: do not print a blank voucher for manual completion, and be careful not to cut off the string of numbers at the bottom, as these change with each entry. Payment should be sent along with the voucher to the designated address, and it is important to note that no correspondence or photocopies should be included. The WT-6 is not required for annual filers, who should instead use Form WT-7. Additionally, those seeking a confirmation number for their submission should opt for online reporting or telephone payment options.