2026 Preliminary Equalized Values Posted

​​​​2026 Preliminary Equalized Values Posted

July 31, 2026

To: County Clerks, County Treasurers, Real Property Listers, Register of Deeds,
Primary Assessors Statutory Assessors, Municipal Clerks, Municipal Treasurers, TID Subscriber List

Today, the Wisconsin Department of Revenue (DOR) posted its preliminary 2026 Equalized Values, Tax Incremental District (TID) Values, Net New Construction NNC) Report, and County Apportionment Report.

DOR posts the 2026 preliminary Equalized Values, providing each municipality an opportunity to review the values before we certify them on Friday, August 14.

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
  • See "Guidelines for Warranted Changes" below for information on changes made during the preliminary review process

Information Available for Review – August 7 review deadline

  • Net New Construction and TID Values
    • Municipal assessor provides the assessed values used by DOR to calculate net new construction and TID full values. Note: Full values may contain corrections to the prior year's values.
    • If you would like to review the assessed values reported to DOR, contact your municipal assessor
  • Equalized Values – reflects all value changes to your municipality

Additional Information

Guidelines for Warranted Changes

  • If DOR determines any changes to the preliminary values are warranted, we will make changes before certifying values on August 14
  • DOR will make changes to preliminary values following these thresholds:
    • Error due to clerical, arithmetic, transpositional, or similar (sec. 70.57(1b), Wis. Stats.)
    • Greater than 2% of the Equalized Value or TID Value – will adjust the 2026 value
    • 2% or less of the Equalized Value or TID Value – will make an adjustment to the 2027 value
    • We will not apply value changes resulting from an amended Municipal Assessment Report (MAR) filed after the second Monday in June. These changes will become an adjustment to the 2027 Equalized Value.
    • If necessary, DOR will contact the municipal assessor to discuss and confirm changes

Timeline

  • August 7 – deadline for municipalities to contact an Equalization Bureau District Office about the preliminary values
  • August 14 – DOR publishes the 2026 Final Equalized Values, TID Values, Net New Construction Report and County Apportionment Report, and notifies stakeholders

Available Reports

​Statement of Changes in Equalized Values

Includes:

  • 2026 total Equalized Values
  • 2025 total Equalized Values
  • Amount and percent change from 2025
  • Prior year corrections
  • Detailed adjustments to the Equalized Values

Tax Incremental District Values

Includes:

  • 2026 TID Values
  • 2026 TID Value increment
  • 2025 TID Values
  • Amount and percent change from 2025
  • Locally assessed TID Values
  • Manufacturing TID Values
  • Prior year corrections

​Tax Incremental Finance Value Limitation

Includes:

  • TID base year
  • 2026 TID current Value and municipal total
  • 2026 TID Value increment and municipal total
  • 2026 municipal Equalized Values
  • 5%, 7% or 12% test

​​Net N​ew Construction – Summary​

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 current year NNC by the prior year Equalized Value of a municipality or county
  • TID adjusted levy limit percent – percentage calculated by dividing the TID adjusted 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
​​County Apportionment

Includes:

  • 2026 Equalized Values reduced by 2025 TID Increment Values
  • 2026 apportionment as a percent of total county value (reduced by total TID increment)
  • 2026 TID Value Increments
​​

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.

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