Will County Property Tax Appeal — Illinois

You typically have 30 calendar days from the date of notice to file an appeal with the Will County Board of Review, and missing that deadline can forfeit the right to appeal for that year. The Board of Review Complaint Portal will be open for complaint submissions from August 6, 2026 through September 8, 2026. The appeal has to be filed with the Will County Board of Review within 30-days of the date the assessments are published in the newspaper. It's crucial to act quickly once you receive your assessment notice to ensure you don't miss this important deadline.

The Board of Review Complaint Portal will be open for complaint submissions from August 6, 2026 through September 8, 2026. To file your appeal online, visit https://borappeals.willcountysoa.com during the open filing period. You'll need to file a written complaint on Form PTAX-230, Non-farm Assessment Complaint, with the county board of review. Appeal forms can be obtained online at https://www.willcountysoa.com. An attorney is NOT required for most residential homeowners (see Board of Review Rule #9), as a homeowner you have the right to represent yourself, free of charge.

The General Homestead Exemption reduces a home's Equalized Assessed Value (EAV) by up to $6,000 in Will County and applies only to the primary residence (single-family home, condo, or co-op). Senior citizens age 65 or older can receive an additional Senior Citizens Homestead Exemption that reduces the EAV by $8,000 in Will County. These exemptions directly reduce your taxable assessed value, which translates to real savings on your annual property tax bill. For example, with the county's 2.05% effective tax rate, a $6,000 homestead exemption saves approximately $123 annually.

At the hearing, you will present evidence of unfair assessment to the board of review. Property owners must provide substantial evidence that their assessment is unfair. To obtain evidence visit the web site of the local assessor or the supervisor of assessments, visit the local assessor's office, or hire a professional appraiser. Pertinent evidence includes recent sales of comparable properties, photographs, property record cards of similar properties, and elements detracting from value. The Board will review your evidence and make a determination on whether to adjust your assessment based on the merit of your appeal.

With Will County's median property tax of $4,921 per year for a home worth $240,500 and an average effective tax rate of 2.05%, even a modest reduction in your assessed value can lead to significant savings. For example, if your appeal results in a 10% reduction in your home's assessed value from $80,167 to $72,150 (based on the median home value), you would save approximately $492 annually on your property taxes. Many homeowners successfully achieve reductions of 10-20% when they can demonstrate their property is overassessed compared to similar homes in their neighborhood.

Evidence needed includes a list of recent sales of comparable properties, including photographs, PRCs (property record cards), and evidence of the sale prices. You should obtain a current appraisal of the property. Include a copy of the property record card (PRC) and photographs of similar or neighboring properties. Document any elements detracting from the value of the property not shown on the PRC and provide an estimate, in terms of dollars, of their negative effect on the market value. Keep your evidence packet tight - a smaller packet with labeled exhibits and a simple explanation usually beats a large upload that forces the reviewer to hunt for the point.

If you miss the Board of Review deadline, you can still appeal if you received a Board of Review decision - a petition for appeal to PTAB must be filed within 30 days of the board of county review's written decision, or within 30 days of the written notice of the application of final, adopted township multipliers by the board of review. If you do not agree with the county board of review's decision, you can appeal the decision (in writing) to the State Property Tax Appeal Board or file a tax objection complaint in circuit court. In either case, you must pay your taxes pending the outcome of the appeal of the board of review's decision. However, missing the initial Board of Review deadline means you cannot appeal at the county level for that tax year.

Your property tax bill is determined by two things: the assessed value of your property and the tax rate applied by various taxing districts. Illinois uses a 33.33% assessment ratio, meaning your home is assessed at one-third of its fair market value. Property tax bills in Will County are calculated based on the assessed value of a property, which is a percentage of its market value. The local tax rate is applied to this assessed value to determine the tax bill. The Will County Supervisor of Assessments may also apply a township multiplier (for example, 1.0845 in Plainfield Township for 2026) based on the Department of Revenue's Sales Ratio Study to bring the assessment level to 33 1/3%.