PIO-16 (R-10/23) Page 1 of 3
What role does property tax play?
Property tax has played a major role in nancing government since Illinois’ early days. In fact, until the depression
of the 1930s, property tax was the main source of funding for state government. Today, however, only local
governments levy and collect property tax.
Approximately 6,000 local government units (e.g., municipalities, townships, counties, schools, park districts)
use property tax to nance the majority of services that they provide to their citizens. The largest share of local
property tax goes to school districts for education. Other public services include police and re protection, street
maintenance, and recreation.
What is Illinois’ property tax cycle?
The Illinois property tax cycle generally extends over a two-year period. A tax year is the year of assessment and
reects the value of real property as of January 1 of that year. The actual tax bills are paid in the year following the
tax year. For example, taxes on a 2023 assessment are paid in 2024.
How is real property assessed in Illinois?
The required assessment level for tax purposes on any parcel of real property in any county, except Cook County, is
33 1/3 percent of the property’s fair market value, excluding farmland and farm buildings.
Cook County classies property and assesses classes at dierent percentages of fair market value. For example,
the required assessment level for the residential class is 10 percent of fair market value. The Cook County
Assessor’s Oce has information about other classes.
Will I be notied if my assessment is going to change?
Yes. Any change in real property assessments must be published in a newspaper of general circulation by the chief
county assessment ocer (CCAO) in each county every year. Every four years when all property is reassessed
(three years in Cook County), a complete list of assessments must be published for notication purposes. The
assessments by the CCAO are subject to further revision and equalization by the board of review. A complete
list of the board of review assessment changes and equalization factors is a matter of public record and open
to public inspection. In addition, taxpayers outside Cook County must receive a mailed notice of any changes in
their assessment from the previous year, unless the change was due to the application of an equalization factor
by an assessor. Banks, savings and loans, and other mortgage lenders also are required to forward copies of all
assessment change notices to aected borrowers.
Illinois Department of Revenue
An Overview of Property Tax
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What determines my property tax?
Your tax bill is based on two factors:
• equalized assessed value (EAV) of your property, and
• amount of money your local taxing districts need to operate
during the coming year (i.e., levies).
The assessment on your property is set by local ocials and
is merely a method of fairly distributing the tax burden among
all property owners in your community (i.e., the tax base). Your
tax bill can remain the same or decrease even though your
assessment is increased if the tax base increases or the taxing
districts do not increase their levies. Conversely, your tax bill
can increase even though your assessment remains the same
or decreases if the tax base decreases or the taxing districts
increase their levies.
How can I determine if my assessment is fair?
Once you have veried that the information on your
assessment record is accurate, you can use one of two
methods to quickly determine if your assessment is fair.
Method 1: Compare the fair market value of your property
with recent sales of similar properties in your neighborhood.
The fair market value of your property is dened as the price
you would accept if a willing and able buyer would oer
to purchase your property at today’s prices. This method
is appropriate if you have either recently purchased your
property on the open market or obtained a professional
appraisal.
Method 2: Compare the assessed value of your property
with similar properties in your neighborhood to determine
uniformity in assessments. You can get the assessed
value of your property from the township or multi- township
assessor, or the CCAO, also referred to as supervisor of
assessments. You have the right to inspect the assessment
record for any parcel of property subject to reasonable
regulations set by local ocials.
What can I do if I think my assessment is unfair?
There are several administrative remedies available to you.
If your property is in Cook County, you can apply for revision
with the county assessor or le a complaint with the Cook
County Board of Review. If your property is outside Cook
County, you can le a complaint with that county’s board of
review.
If you are dissatised with the board’s decision, you may
appeal to the Illinois Property Tax Appeal Board or le a tax
objection complaint in circuit court. A favorable court ruling is
unlikely unless you have exhausted all available administrative
remedies.
An Overview of Property Tax
Note: If you think your assessment is unfair, it is important
to timely pursue administrative remedies. Your “notice of
assessment change” form lists the ling deadlines. Once you
receive your tax bill, it is generally too late to challenge your
assessment.
What will happen if I don’t pay my property tax?
A lien will be placed on your property that may be sold to
recover the amount of tax due. If this action occurs and your
property is residential, with six units or less, you may redeem
it within two and one-half years of the date of sale. You must
pay penalties and other costs (including interest) in addition
to any tax due. Other classes of property (e.g., agricultural,
commercial) have dierent redemption time periods. If you do
not redeem your property, you may lose it.
Is there tax relief available to property
owners?
The Property Tax Extension Limitation Law (PTELL) generally
restricts the growth in property tax revenue to taxing districts
to 5 percent or the annual change in the U.S. Consumer Price
Index, whichever is less. However, a higher tax rate may be
approved by the voters. Originally this law covered property
only in Lake, DuPage, Kane, McHenry, and Will counties. In
1995, Cook County property was included, and in subsequent
years the law was extended to other counties by referendum.
To date, 33 counties have passed referenda. (A referendum
can be held in a county at the request of the county board.)
Owner-occupied residences may be eligible for a General
Homestead Exemption, which reduces their EAV. This
exemption is equal to the current EAV above the EAV on that
same property in 1977. The exempt amount cannot exceed
$6,000 for most counties and $8,000 for counties contiguous to
Cook County.
In Cook County, owner-occupied residences may also be
eligible for a General Homestead Exemption. This exemption is
equal to the current EAV above the EAV on that same property
in 1977. The exempt amount cannot exceed $10,000.
Persons 65 years of age or older who own and occupy their
own home may apply for a
• Senior Citizens Homestead Exemption that reduces the
EAV of a home by an additional $5,000 (for most counties)
or $8,000 (for Cook County and counties contiguous to
Cook County), and
• Low-Income Senior Citizens Assessment Freeze
Homestead Exemption if the household income is $65,000
or less and they meet other criteria. The property’s EAV
is frozen at a base year value to prevent any increases in
EAV due to ination.
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Senior citizens with an income of $65,000 or less may defer
all or part of their property tax on a personal residence
through the Senior Citizens Real Estate Tax Deferral
Program. The program is much like a loan in which the
deferred tax, plus an annual amount of interest specied
under the Senior Citizens Real Estate Tax Deferral Act,
generally is not due until the taxpayer sells the property or
dies.
Other exemptions or preferential assessments may be
granted for persons with disabilities, veterans, veterans with
disabilities, surviving spouses of veterans with disabilities or
veterans killed in the line of duty, natural disasters, historic
residences, and solar energy devices. You can get additional
information from your township or multi-township assessor
and CCAO.
Homeowners may receive up to a 5 percent credit on their
state income tax for property tax paid on their primary
residence.
How is farmland assessed?
A parcel of land used for agricultural purposes for at least two
consecutive years is eligible for a preferential assessment.
Farmland is assessed based on its agricultural economic value
(AEV) (i.e., its ability to produce income) rather than on 33 1/3
percent of its fair market value. The AEV is a calculation of an
average of prices paid for agricultural products, production costs,
and interest rates that are charged by the Agri-Bank over a
ve-year period.
Assessing ocials’ value all farmland in the county based
upon its productivity, taking into account the land’s actual
use, slope, erosion, ooding, and other factors that aect
productivity.
Farm buildings are assessed at 33 1/3 percent of their
contributory value to the productivity of the farm. Farm
homesites and residences are assessed at 33 1/3 percent of
their fair market value.
An Overview of Property Tax
Where can I get additional information?
• Assessments in Cook County
— COOK COUNTY ASSESSOR’S OFFICE
COUNTY BUILDING ROOM 320
118 NORTH CLARK STREET
CHICAGO IL 60602
312 443-7550
cookcountyassessor.com
• Assessments in other counties
— Township or multi-township assessor;
— Chief county assessment ocer (CCAO), also
referred to as supervisor of assessments
• Property Tax Relief
— Homestead Exemptions
Chief county assessment ocer (CCAO), also
referred to as supervisor of assessments
— Senior Citizens Real Estate Tax Deferral
County collector
• Tax bills
— County collector or treasurer
• Appeals
— COOK COUNTY BOARD OF REVIEW
COUNTY BUILDING ROOM 601
118 NORTH CLARK STREET
CHICAGO IL 60602
312 603-5542
cookcountyboardofreview.com
— Cook County Assessor’s Oce
(See “Assessments in Cook County”)
— County Board of Review for all other counties
Consult your local telephone directory.
— ILLINOIS PROPERTY TAX APPEAL BOARD
STRATTON OFFICE BUILDING ROOM 402
401 SOUTH SPRING STREET
SPRINGFIELD IL 62706-4001
217 782-6076 TDD 217 785-4427
ptab.illinois.gov
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