Assessment and Tax Roll Electronic File Transmissions

​​​​​​​​​​The Wisconsin Department of Revenue (DOR) requests use of Extensible Markup Language (XML) for filing assessment and tax rolls.

• 2023​ Tax Year
  
• 2022 Tax Year
  
• 2021 Tax Year
• 2020 Tax Year
• 2019 Tax Year

Helpful links

• Assessment And Tax Roll Instructions for Clerks
• Filing Assistance
• Wisconsin Act 20
• Wisconsin Municipal, School, Special, and Taxation District codes
• Wisconsin Property Assessment Manual​

​If you have questions, contact us at OTAS@wisconsin.gov or (608) 266-7750.

Vendors Submitting Valid XML Assessment and Tax Rolls

The list below provides the names of vendors who provide XML assessment and tax rolls complia​nt with DOR's file requirements.