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Blog · Illinois · 2026-08-01 · 2 min read

TIF districts: why your rate can rise while values grow

Tax increment financing freezes the base for other taxing bodies and captures the growth.

Tax increment financing is a redevelopment tool with a real effect on everyone's rate, including people who do not live in the district.

The mechanism

When a TIF district is created, the equalized assessed value inside it is frozen at that year's level for the purpose of other taxing bodies. Growth above the frozen base — the increment — goes to the TIF fund for redevelopment rather than to the schools, village and county.

The effect on your rate

Those taxing bodies still need their levies. With the increment unavailable, the levy spreads across a smaller effective base, and the rate rises for everyone in the district — including property outside the TIF.

Whether it is good or bad

Genuinely contested, and it depends on whether the development would have happened anyway. That is a policy argument for a village board, not a board of review.

What it is not

Not a ground for appeal. A board of review cannot alter TIF treatment, and raising it in a hearing spends your time on something nobody in the room can change. If it concerns you, the forum is your municipality.

This is general information about how Illinois assessments and appeals work. It is not legal advice, not an appraisal, and not a prediction about your case. Deadlines and rules differ by county — check yours with your Board of Review.

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More on Illinois

Cook County: why advice written for Illinois usually does not apply Different ratios, a different cycle, an extra appeal stage and a very large multiplier.Cook County's triennial reassessment and the three triads Your township is reassessed every third year. Knowing which year is yours changes when to act.Cook County's class codes, and what they do to your assessment The class sets the assessment level. It also sets who you are allowed to compare yourself to.The two-stage Cook County appeal: Assessor first, Board of Review second Two separate filings, two separate windows, and losing the first does not end anything.

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