August 14, 2026
To: County Clerks, County Treasurers, Real Property Listers, Register of Deeds,
Primary Assessors, Statutory Assessors, Municipal Clerks, Municipal Treasurers
TIF/TID List
Today, the Wisconsin Department of Revenue (DOR) posted its final 2025 Equalized Values, Tax Incremental District (TID) Values, Net New Construction Report, and County Apportionment Report.
Note: Under state law (sec.
70.57, Wis. Stats.), if a change in value is identified after the certification date, DOR makes the correction in the following year.
Assessed Value Information
- Municipal value changes are based on the Municipal Assessment Reports DOR
received by the June 8, 2026 filing deadline
- Municipal assessed value changes are part of the Equalized, TID, and NNC values
Available Reports
Includes:
- 2026 total Equalized Values
- 2025 total Equalized Values
- Amount and percent change from 2025
- Prior year corrections
- Detailed adjustments to the Equalized Values
Includes:
- 2026 total TID values
- 2026 value increment
- 2025 total TID values
- Amount and percent change from 2025
- Locally assessed TID values
- Manufacturing TID values
- Prior year corrections
Includes:
- TID base year
- 2026 TID current value
- 2026 TID value increment
- 2026 municipal Equalized Values
- 5%, 7% or 12% test
2026 Net New Construction reports implement legislation from 2023 Act 12.
TID growth from creations in 2025 and two exceptions from 2024, are now used as a factor in determining annual levy increases
- TID new construction for levy limits – municipalities may use up to 90% of the new construction within a TID for determining the levy increase
- TID termination for levy limits – beginning with TIDs created in 2025, allows a one-time levy adjustment equal to 10% of the newly-created value within the TID; the adjustment may be increased to 25% if the TID closes prior to 75% of its anticipated life
- 2026 net new construction – amount of net new construction that occurred during calendar year 2025.
Note: This may include prior year corrections.
- 2025 Equalized Values
- Net new construction as a percent of the 2025 Equalized Value.
Note: This percent is a factor in levy limit calculations.
Includes:
NNC 2026 tab
-
Amount of NNC – amount of new construction reduced by any demolition or destruction of buildings, and may include corrections to the prior year
-
Amount of TID adjusted NNC – amount of NNC adjusted by 90% of the new construction within a TID for determining the levy increase
-
Levy limit percent – percentage calculated by dividing the TID adjusted NNC by the prior year Equalized Value of a municipality or county
-
TID adjusted levy limit percent – percentage calculated by dividing the current year NNC by the prior year Equalized Value of a municipality or county
Split Dist. Summary tab
-
Split districts – identifies taxation district and municipal NNC values
TID Adjustment Full Calculation tab
- Statewide listing of TIDs impacting municipal NNC
- Identifies the 2026 TID adjusted NNC calculation
Includes:
- 2026 Equalized Values reduced by 2026 TID Increment Values
- 2026 apportionment as a percent of total county value (reduced by total TID increment)
- 2026 TID Value Increments
Includes:
- 2026 net new construction – amount of net new construction that occurred in calendar year 2025 in the tax increment district (TID)
- 2025 Equalized Values
- TID Net new construction as a percent of the 2025 Equalized Value
Note: DOR also emailed the 2026 Equalized Values to municipal and county clerks.
Additional Information
For more information on the Equalization process and uses of Equalized Values, review the
Wisconsin's Equalized Values publication on our website.
Questions?
Contact the
district office in your area.