​​​​The Wisconsin Department of Revenue currently offers three methods of transmitting WT-6's.

• ​HTTPS upload. You navigate to our web page ​and use the Ready to Transfer button, identify your file and click an upload button. Upon a successful transfer you will receive a receipt number, we will then email the acknowledgement to the email address you included in the AckAddress element in the electronic WT-6. Returns submitted using the file transfer application MUST contain a valid email address in the AckAddress element.


• Secure FTP (sFTP). You will need a Secure FTP client and a WAMS ID from the State of Wisconsin. You will drop files in a test or production folder and retrieve your test or production acknowledgements. Please contact your DOR representative for an instruction package.


• ​REST web transfer. This will require you (or your software vendor) to write code to make the transfer. REST is like a web Service but without using the SOAP protocol. Upon a successful transfer you will receive a receipt number, we will then email the acknowledgement to the email address included in the AckAddress element in the electronic WT-6. Please contact your DOR representative for the proper URL and other pertinent information about programming for a REST transfer.

Please email DORDeveloperRelations@wisconsin.gov for further information. List XML Withholding WT-6 in the subject line.

October 11, 2023​​​