Withholding WT-6 and Batch Payments Electronic File Transmission

The Wisconsin Department of Revenue is pleased to offer employers the option of paying via this secure Internet process. Employers, and/or their representatives, transmit payment data in an electronic file over the Internet.

This file allows employers to send an electronic funds transfer (EFT) for the full amount of payment along with the information necessary to identify the amount that is credited to each individual employee.

Letter of Intent

Please review the LOI Release Document for information regarding the required Letter of Intent. Wisconsin will require completion of the Letter of Intent and completion of our testing program prior to approval for XML filings.

The file transmission:

  • is a secure process for receiving payment and information of wage attachment payments
  • is in XML language using a Department of Revenue web server
  • offers a web GUI and scripted transmission method
  • allows one or more return payments per XML file
  • allows zipped transmissions
  • does not use SOAP or MIME enveloping processes
  • offers two transmission options:
    1. HTML based over SSL using 128-bit encryption
    2. secure FTP
  • sends acknowledgements within one business day
  • is available using the electronic funds transfer (EFT) debit and credit payment process
  • incorporates work done by the IRS and the Federation of Tax Administrators standards group (FSET)

Important: Change log for WT-6 Batch Payment XML Schema

​Schemas (.xsd)

Sample Instance Documents (.xml)

Analysis Documents (.xls and .pdf)

This system is for authorized users only; system access is monitored. By using this system, you expressly consent to this monitoring. Evidence of unauthorized access will be provided to the appropriate law enforcement agencies.

Ready to Transfer


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

All Other Questions:
(608) 266-2776
(608) 267-1030 (FAX)

September 16, 2019