The Cook County Board of Review is currently accepting property assessment appeals from taxpayers for the 2025 Tax Year.

Here's how to appeal your property tax assessment This year, Chicago is undergoing reassessment, and notices to four city townships reflect assessed values that have gone up 27% to 38%.

Board of Review Chair Phil Taylor said the final notice of assessment for 2023, also known as multiplier cards, will be mailed today.

Review the decision: Carefully review the assessment board’s decision. If your appeal is successful, your property tax bill will be adjusted accordingly.