Rate Breakdown

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

How Property Tax Works in Alexander County

In Alexander County, Illinois, property taxes are determined through a two‑step process that begins with a formal assessment of your property's value and ends with the application of the county’s millage rates. The Board of Assessors appraises every parcel annually based on the most recent comparable sales, improvements, and land use. The resulting “full market value” is used as the basis for tax calculation. Next, the county’s millage rate—the total of all levied taxes expressed in mills (thousandths of a dollar per dollar of value)—is applied to the assessed value. As of the 2025 budget cycle, the combined millage rate for Alexander County is approximately 8.5 mills; this includes county, school district, municipal, and special district levies. The formula is:

• Property Tax Owed = Assessed Value × Millage Rate / 1,000
• Property Tax Owed = (Full Market Value × 0.0085)

Because the msllage rate can change each fiscal year in response to budgetary needs, it’s prudent to check the most recent rate each time you calculate your estimated tax. Online calculators typically use the current millage figure and provide a reliable estimate without the need to visit the assessor’s office.

Available Exemptions

Illinois offers a range of exemptions that can lower your taxable base in Alexander County. While the county imposes its own assessments, the exemptions you qualify for at the state level directly reduce the assessed value before the millage rate is applied.

• Homestead Exemption: Homeowners who occupy their residential property as their principal residence can receive a standard exemption of $3,000 from the assessed value. This deduction applies to any residential property purchased after July 1, 2013.
• Senior Citizen Exemption: Property owners who are 65 or older, residents of a 55+ community, or qualified veterans may receive both the $3,000 homestead exemption and an additional $2,000 senior citizen exemption if they own at least 55% of the home’s value.
• Disability Exemption: If you have a qualifying disability under the laws of the Illinois Department of Natural Resources, you may be eligible for a $3,000 exemption, which can be combined with the homestead exemption for a greater reduction.
• Veteran Exemption: Veterans who served at least one year and meet other eligibility criteria can claim an exemption equal to the total assessed value of the property, essentially removing the taxable portion entirely for that year.

To claim any exemption, you must submit the appropriate form to the Alexander County Assessor’s Office by the deadline listed on the county’s tax calendar. Verification of eligibility often requires a copy of a government‑issued ID, proof of residency, or a discharge of debt statement for veterans.

Payment Schedule & Deadlines

Alexander County offers a flexible payment schedule to accommodate different budgeting preferences. Property tax bills are typically issued in early October. The county allows two primary payment options: a single lump‑sum payment or two installments (half in October and the remaining half in February of the following year). Both options require payment in full to avoid interest.

• October Payment Deadline: Full tax by October 15th. A late fee of 0.5% per month and a 5% penalty are assessed if payment is not received by the due date.
• February Installment Deadline: The second half‑year payment is due by February 15th if you choose the split‑payment option. Failure to pay on time triggers the same late fee and penalty structure.
• Electronic Payment Dates: The county’s online portal allows payments to be scheduled or executed on any business day, but the late‑payment penalties still apply if the due date is missed.

Unpaid assessments accrue interest at the statutory rate of 4.125% per annum, which is compounded monthly. If you anticipate a shortfall, contact the Tax Collector’s Office early to request an installment agreement or to discuss other relief options.

Appealing Your Assessment

If you believe your property’s assessed value is inaccurate, you have the right to file an appeal within Alexander County. The appeal process is governed by the Illinois State Board of Assessment Appeals, and county residents must adhere to local timelines.

• Notice of Assessment: You receive this notice by mail in early October. You must review its contents for errors or omissions.
• Filing a Complaint: File a written complaint within 30 days of the assessment notice. The complaint must include a statement of facts, evidence supporting your position, and a request for re‑assessment.
• Review Hearing: The county will schedule a hearing, normally within 90 days of the complaint. You may present oral testimony, documents, or affidavits explaining why the current assessment is inaccurate.
• Decision & Appeal to Higher Tribunal: After the county’s decision, if you disagree, you can appeal to the State Board of Assessment Appeals. This must occur within 60 days of the county’s final decision.

Keep in mind that filing a dispute does not automatically reduce your tax bill; you may be required to pay the full amount until the appeal finalizes. Nonetheless, appeals often result in significant savings when an over‑assessment is confirmed by the board’s evidence review.