Net New Construction

​​​​​​​​The Wisconsin Department of Revenue's Equalization Bureau issues the Net New Construction Report. This report provides municipalities and counties with net new construction numbers for levy limits and the Expenditure Restraint Incentive Program (ERIP).


Report includes

NCC 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

Net New Construction Report vs. Statement of Changes in Equalized Value Report

  • Net New Construction Report - shows net new construction numbers that include new construction reduced by any demolition or destruction of buildings, and may include corrections to the prior year along with TID NNC adjustments for determining levy increases
  • Statement of Changes in Equalized Values Report - the new construction column reports the total new construction and higher land utility for each class. The column does not include removal of buildings (demolition) or corrections to the prior year.

Levy Limits

  • Counties and municipalities use the percentage of net new construction as a valuation factor in determining the allowable levy
  • DOR will post the county and municipal levy limit worksheets in September 2026
  • Levy Limit Common Questions

Expenditure Restraint Incentive Program (ERIP)

  • Municipalities use the net new construction as a valuation factor in calculating ERI​P
  • Municipalities use the ERIP calculation to determine their allowable increase in general fund expenditures for the coming year (2027)
  • DOR sends municipalities the Valuation Factor Notice in October 2026

Net New Construction Reports

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

Preliminary - ​2026 | 2025 ​(Excel) | 2024 (Excel) | 2023 (Excel) | 202​2 (Excel) | 2021 (Excel)​

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

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