Rate Breakdown

Property taxes in Calhoun County are calculated by multiplying the assessed value (minus exemptions) by the total local millage rate.

How Property Tax Works in Calhoun County

In Calhoun County, property taxes are calculated based on the assessed value of real estate as of April 1st each year. The County Assessor’s office, together with municipal assessors for any incorporated communities that overlap the property, determine the market value through a professional appraisal or a valuation study. Once assessed, the amount is multiplied by the applicable millage rate—a fee expressed in mills (1/1,000 of a dollar) set by the county and by any local jurisdictions that levy taxes on the property. The combined millage rate for a typical Calhoun County residential parcel ranges from 22 to 24 mills, but individual municipality rates can add or subtract a few mills depending on the locality’s budget needs.

The final property tax amount is the assessed value multiplied by the total millage rate, expressed in dollars. For example, a home with an assessed value of $150,000 and a combined millage rate of 24 mills results in an annual tax bill of $3,600. This calculation is performed each fiscal year, and the tax bill is sent out to property owners in April.

Available Exemptions

Illinois residents in Calhoun County can qualify for several key exemptions that reduce their taxable property base. These exemptions are available to all property owners who meet the eligibility criteria at the time the property is assessed.

• Homestead Exemption: Reduces the assessed value of a primary residence by up to $40,000. The exemption can be applied for when filing the annual tax return.
• Senior Citizen Exemption: Citizens aged 65 or older may receive a 100% exemption on the local portion of the property tax, effectively eliminating the county portion for their homestead.
• Disability Exemption: Individuals with a qualifying disability that meets the state’s requirements may receive up to a 25% reduction on the local portion of the tax.
• Veteran Exemption: Veterans who are dependent on a spouse or whose spouse is disabled may receive an additional exemption of up to $2,500 on the assessed value.

To claim these exemptions, owners must submit the appropriate forms with the Calhoun County tax office, or include the exemption information when filing the Illinois Property Tax Relief Application (Illinois Tax Relief Application, IR-15).

Payment Schedule & Deadlines

Calhoun County adopts a two‑installment payment schedule that is standard across most Illinois counties. Paying on time not only avoids penalties, it also ensures you do not owe additional interest on your balance.

• First Installment: Due on July 1st. Covers 50% of the annual tax bill.
• Second Installment: Due on September 15th. Covers the remaining 50% of the bill.

If you prefer, you may also opt to pay the full amount in one lump sum prior to July 1st to avoid any installment processing delays. Late payments incur a 5% late fee for each month, escalated to a 10% default penalty if more than a year has passed since the original due date. Additionally, the County will may charge a default interest rate of 3% per annum on overdue amounts. It’s therefore essential to plan your payments to avoid accumulating penalties.

Appealing Your Assessment

Residents who believe their property has been over‑valued can file an appeal with the Calhoun County Assessment Appeal Board. The process is straightforward, yet time‑sensitive, and must be pursued within a strict window.

• Notice of Assessment: You will receive a formal notice in the mail or online listing the assessed value for your property. This notice is your official statement and the starting point for any appeal.
• File Deadline: Appeals must be filed no later than 30 days after the date of the assessment notice. After this period, the assessed value is deemed final.
• Required Forms: Complete the Assessment Appeal Form (Form 1703) and submit it to the County Assessor’s Office. Attach any supporting documents such as recent appraisal reports, sales comparables, or photographic evidence.
• Hearing: The Appeal Board will schedule a hearing, usually within 90 days of filing. At the hearing, you may present oral arguments, submit additional evidence, and respond to questions.
• Decision: The board will issue a written decision within 60 days of the hearing. If the decision is unfavorable, you can appeal to the Illinois Assessor Appeals Tribunal (IAAT) for a higher review.

Understanding the assessment and appeal process helps you secure a fair property tax burden and ensures you are not overpaying on your Calhoun County taxes.