September 9, 2026
To: TIF/TID List, Municipal Clerks and Treasurers
The Wisconsin Department of Revenue (DOR), State and Local Finance Division, is reminding municipalities of an upcoming deadline.
Complete by November 2, 2026
A. TID Creation or Amendment
Municipalities creating a new TID or amending an existing TID (territory or redetermination) for 2026 must adopt a resolution between October 1, 2025, and September 30, 2026. After a municipality adopts a TID creation/amendment resolution, the municipality must provide DOR with the below documents and fee.
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Email documents to tif@wisconsin.gov:
- 2026 TID creation
- Legal Docs.pdf (PE-605 plus required documents indicated on the form)
- Project Plan.pdf (approved project plan)
- Bounds Map.pdf (map showing parcels and boundary, plus legal description)
- Value Forms.xlsx (TID Base Value Workbook)
- 2026 TID territory amendment
- Legal Docs.pdf (PE-605T plus required documents indicated on the form)
- Project Plan.pdf (approved project plan)
- Bounds Map.pdf (map of original TID boundary showing added or subtracted parcels, plus updated legal description)
- Value Forms.xlsx (TID Base Value Workbook) – use for adding parcels
- Value Forms.xlsx (Territory Subtraction Workbook) – use for subtracting parcels
- 2026 TID base value redetermination amendment
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Pay Tax Incremental Finance (TIF) fee in
My Tax Account
B. Act 12 Personal Property Base Value Adjustment – optional request once per TID
- Applies to municipalities with a TID with personal property in the base value that did not previously request a personal property base value adjustment
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Email completed
Personal Property Removal Workbook to
tif@wisconsin.gov
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Note: There is no fee for a personal property base adjustment. DOR will review requests received by November 2, 2026, for adjustment in tax year 2027.
Questions?
Contact us at tif@wisconsin.gov.