Filing Reminder/Tips – XML Tax Roll Files to DOR - Due Today, March 17

​March 17, 2025

To: County Treasurers, Real Property Listers

Disregard this reminder if you already submitted an accurate county tax roll file. If unsure, check your status following the instructions below.

The Wisconsin Department of Revenue (DOR), State and Local Finance Division would like to remind you that your 2024 XML Tax Roll Filing is due today, March 17, 2025. (sec. 59.25(3)(e), Wis. Stats.)

Filing Information

Check Your Status

DOR created a report to review your submission status:

  • Visit the County Rolls Filing Report web page
  • Select "2024" from the "Report year" dropdown
  • Click (+) to the left of your county name
  • Do you see an "X" in the "RE Tax Roll" column?
    • Yes – DOR received and accepted your submission
    • No – you still need to submit an accurate county tax roll file

Filing Reminders/Tips

  • Include a full and accurate zip code:
    • If zip codes are missing, we can't properly respond to tax lookups for those addresses
    • If possible, verify your addresses are using USPS standard format – check addresses on the USPS website
  • Report all:
    • Properties – including tax exempt and municipal owned properties. If properties are missing, DOR can't properly perform tax lookups for those addresses, which affects our ability to identify other nearby addresses.
    • Addresses for a parcel – including when a parcel has multiple buildings, multiple units or multiple entrances with separate addresses
  • Important:
    • Only include characters or words in an address you would include when sending mail to that address (do not include extra symbols like + @ % $)
      • Correct: 123 S MAIN ST
      • Incorrect: 123 + S Main ST
    • Report multiple addresses, such as townhomes, as three separate address entries (do not use a range)
        • Correct:
      • ​1012
      • 1014
      • 1016
        • Incorrect:
      • "1012 – 1016"
      • "1012 – 16"
      • "1012 – 14 – 16"
      • "1012,1014,1016"

Why is Accurate Filing Important?

  • Property assessment and tax rolls are vital components to a fair and accurate property tax process
  • DOR uses property tax information to maintain our street address database and sales tax rate lookup
  • Determining the proper jurisdiction and tax rate for sales and use tax purposes is important (ex: when goods are delivered to a particular street address in a taxable county or city)
  • DOR worked with county and municipal officials to create a standard set of assessment and tax roll data to ensure efficient government and simplify the exchange of information
    • Standard format is Extensible Markup Language (XML), which is the prescribed form for electronically submitting files from local governments to DOR
    • Less room for entry errors because data is streamlined

Questions?

Contact us at otas@wisconsin.gov. ​​