Tax Incremental District (TID) – Net New Construction

​​​​​​​The Wisconsin Department of Revenue's Equalization Bureau issues the TID Net New Construction (TIDNNC) Report. The 2026 TIDNNC Report implements legislation from 2023 Act 12. Refer to Net New Construction​ for additional information on Act 12 impacts. Municipalities use this report to review TIDNCC values.

This report provides net new construction values by TID including municipal and state totals.

Report column definitions

  • Comun Code – ​county municipal code where TID is located
  • County Name – county where TID is located
  • TVC – municipality type (town, village, city)
  • Municipality – ​name of the city, village or town where the TID is located
  • TID # – ​​​number assigned to the TID by the municipality. An alpha character after the number provides additional information, if applicable. The alpha characters include:
    • A – Town (sec. 60.23, Wis. Stats.)
    • E – Environmental remediation
    • O – Cooperative
    • T – Town (sec. 60.85, Wis. Stats.)
    • R – County (Florence or Menominee only)
    • M – Multijurisdictional
  • Base Year –​ year the TID was created
  • Municipal Prior Year Equalized Value – municipal prior year equalized value
  • Net New Construction – value of new construction reduced by any demolition or destruction of buildings, including corrections to the prior year value
  • Municipal Prior Year Equalized Value – municipal prior year equalized value
  • Net New Construction – current year full value of new construction reduced by any demolition or destruction of buildings, including corrections to the prior year full value
  • TID Adjusted NNC Value –​ ​current year full value of new construction at 90%, including corrections to the prior year full value, per Act 12
  • TID Net New % – percentage calculated by dividing the current year net new construction by the prior year equalized value
  • Adjusted TID NNC % – percentage calculated by dividing the current year TID Adjusted NNC Value by the prior year value

Report includes two tabs

  • TIDNNC – Cty
    • Statewide TIDs in order by County name
  • TIDNNC – ​​Muni
    • Statewide TIDs in order by Municipality name
    • Includes State totals at the bottom

TID Net New Construction Reports

2026 ​|​ 2025 (Excel) | 2024 (Excel) | 2023​ (Excel​​)

If you have questions, contact the Equalization Bureau District Office in your area.

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