December 17, 2025

To:  TIF/TID List
Municipal Clerks
Municipal Treasurers

The Wisconsin Department of Revenue (DOR), State and Local Finance Division posted the 2026 TIF forms and resources on our website.

These resources include changes for 2026:

• TIF Information – main TIF web page
• TIF Manual
• TIF forms – use these updated forms for 2026 Tax Incremental District (TID) creation and territory amendment requests.
• Base Value Workbook\ – removed property class from TID Assessment Summary (Form PE-615A)
• Territory Subtraction Workbook – added new worksheet for TIDs created in 2025 or later
• TIF common questions
• TIF resources
• TID Checklist
• Guidelines for Project Plans

Reminders:

• Base Value Workbook (for creations and territory addition amendments) – make sure:
• To include all parcels (in the TID or being added) on the forms
• Parcel numbers on the map and forms match
• Parcels and values match the 2026 assessment roll – do not complete forms until the Board of Review concludes
• Roads or railroads cannot create contiguity – whether they have a parcel number or not, roads or railroads must be bounded by TID parcels
• Legal documents – make sure to:
• Notify special districts in the proposed TID of the public hearing
• Special districts include sewer, sanitary or lake protection districts
• Include the purpose and cost in an amendment public hearing notice
• Project plan – make sure:
• Maps are clear and legible
• To explain which parcels are newly platted residential for Mixed-use TIDs
• Provide the existing and future uses maps for DOR to confirm the newly platted residential percentage
• Show the newly platted residential percentage calculation
• To provide all required information – review Guidelines for Project Plans

Questions?