Cook County Property Tax Exemptions

Check your Cook County property record for exemptions you qualify for but are not receiving: the Homeowner Exemption, Senior Exemption, Senior Freeze, Home Improvement, Persons with Disabilities, Veterans with Disabilities, Returning Veteran and Longtime Homeowner exemptions. A missing exemption can often be recovered for prior years through a Certificate of Error, and our attorneys and CPAs handle the filing on the same no-savings, no-fee basis as an appeal.

Overview

What Are Cook County Property Tax Exemptions?

Cook County property tax exemptions are reductions that lower the portion of your home's value used to calculate your annual property tax bill. Most exemptions work by reducing the Equalized Assessed Value (EAV) of your residence. When your EAV goes down, the amount of tax you owe goes down with it.

The Cook County Assessor's Office administers the majority of residential property tax exemptions, including the Homeowner Exemption, the Senior Exemption, the Senior Freeze, and the Home Improvement Exemption. Each exemption targets a specific group of homeowners: first-time owner-occupants, long-tenured residents, seniors on fixed incomes, people with disabilities, and veterans.

The difficulty is that many Cook County homeowners qualify for more than one exemption and never receive all of them. Exemptions are not always applied automatically, and eligibility rules change from year to year. Checking your property record against the full list of available exemptions is the only way to know whether you are getting every dollar of savings you are entitled to.

We retrieve your current Cook County assessment file and cross-reference applied exemptions against your eligibility profile.
Our attorneys and CPAs flag every exemption you qualify for — current year and up to three prior years via Certificate of Error.
We prepare and submit all paperwork with the Cook County Assessor's Office — no effort required from you.
The Cook County Treasurer typically issues a refund within 10 days of certification. Total processing usually runs 6 to 8 weeks.
Available Exemptions

Residential Property Tax Exemptions Available in Cook County

Each of the following exemptions can reduce your Cook County property tax bill. Many homeowners qualify for more than one.

Homeowner Exemption

The most common Cook County residential exemption, available to owner-occupants of a primary residence.

Savings: Reduces EAV by $10,000; average savings around $950 per year.

Eligibility: Own and occupy the property as a primary residence on January 1 of the tax year (single-family homes, townhouses, condos, co-ops, and owner-occupied buildings of up to six units).

Renewa: Renews automatically after the initial application is approved.

Senior Exemption

Property tax reduction for Cook County homeowners who are 65 years of age or older.

Savings: Typically around $300 per year, and up to about $750 when combined with the Homeowner Exemption.

Eligibility: Homeowner 65 or older who owns and occupies the property as a principal residence; no income limit applies.

Renewa: Renews automatically after the initial application is approved.

Senior Freeze Exemption

Freezes the Equalized Assessed Value of a qualifying senior's home at a base-year value.

Savings: Prevents future assessment increases from raising your Cook County property tax bill.

Eligibility: Homeowner 65 or older with total household income at or below the annual limit (currently $65,000; scheduled to rise to $75,000 for tax year 2026, $77,000 in 2028, and $79,000 in 2029).

Renewa: Must be reapplied for every year during the spring filing period.

Home Improvement Exemption

Lets Cook County homeowners add value to a home without an immediate property tax increase.

Savings: Up to $75,000 of added value is excluded from assessment for up to four years.

Eligibility: Improvements that increase the home's value, such as additions, finished basements, or repairs after structural damage.

Renewa: Automatic for the full four-year window once granted.

Persons with Disabilities Exemption

Annual EAV reduction for Cook County homeowners who meet Illinois disability criteria.

Savings: $2,000 EAV reduction each tax year.

Eligibility: Homeowner who qualifies as a person with a disability under Illinois law and occupies the property as a primary residence.

Renewa: Reapply annually and submit required medical or benefit documentation.

Veterans with Disabilities Exemption

Substantial property tax relief for veterans with a service-connected disability rated by the U.S. Department of Veterans Affairs.

Savings: EAV reduction scales with disability rating; a 70% or greater rating provides a $250,000 reduction, which can fully exempt the home.

Eligibility: Illinois veteran with a service-connected disability and a VA rating on file.

Renewa: Annual reapplication; veterans rated 100% permanent and total are renewed automatically.

Returning Veterans Exemption

One-time EAV reduction for Illinois veterans returning from active duty in an armed conflict.

Savings: $5,000 EAV reduction for the taxable year in which the veteran returns.

Eligibility: Illinois veteran returning from active duty in an armed conflict.

Renewa: Applies only to the year of return.

Longtime Homeowner Exemption

Protects long-tenured Cook County homeowners in rapidly appreciating neighborhoods from sudden tax increases.

Savings: Caps EAV increases for qualifying properties that have seen large assessment growth.

Eligibility: At least 10 continuous years of ownership and occupancy, household income at or below $100,000, and a qualifying EAV growth pattern (7% per year if income is $75,000 or less; 10% per year if income is between $75,000 and $100,000).

Renewa: Reviewed annually; fewer than 2% of Cook County homeowners qualify.

Are You Missing Exemptions on Your Cook County Property Tax Bill?

Thousands of Cook County homeowners overpay every year because an exemption they qualify for is not applied to their property tax bill. Newly eligible seniors, recent buyers, homeowners with disabilities, and returning veterans are the groups most commonly affected. When an exemption is missing, the tax bill is calculated on the full assessed value, and the homeowner writes a larger check than the law requires.

If you were eligible for an exemption in a prior year but never received it, Cook County allows you to recover the money you overpaid. The process is called a Certificate of Error. Homeowners can claim up to three prior tax years of missed Homeowner Exemption savings, and similar procedures exist for other residential exemptions. Once the Cook County Assessor's Office certifies the Certificate of Error, the Cook County Treasurer's Office typically issues a refund within 10 days, with total processing often running 6 to 8 weeks.

Exemption filings for the prior tax year are accepted during an annual application period that typically opens in early spring. For tax year 2025 exemptions (which appear on bills issued in 2026), the application period opened on March 9, 2026. Missing a filing window does not always eliminate the exemption for that year: in many cases a Certificate of Error is still available after the fact, but the sooner the filing is made, the smoother the refund process.

For the full Cook County property tax calendar, see our property tax appeal deadlines page.

How Cook County Tax Appeal Helps You Claim Every Exemption

Our team of attorneys and CPAs handles the entire process, from property record review to refund.

We pull your Cook County property record and compare every residential exemption against your eligibility profile. This surfaces missing current-year exemptions and past-year exemptions that can still be recovered.
Our attorneys and CPAs confirm eligibility against each exemption's specific requirements: age, income, residency, disability status, veteran status, and length of ownership.
We prepare and file the exemption applications with the Cook County Assessor's Office. When an exemption should have been in place in prior years, we file a Certificate of Error to recover up to three years of refunds on your behalf.
We track your application and Certificate of Error through approval. Refunds are issued directly to you by the Cook County Treasurer's Office.
Transparent Pricing

25% of what we recover, paid only after your refund arrives

No upfront fee. No monthly retainer. If we do not recover a refund or reduce your future bill, you owe us nothing. You keep the remaining 75 percent of every dollar recovered, paid directly to you by the Cook County Treasurer's Office.

Our Fee25%of the recovery

Cook County Property Tax Exemptions FAQ

Quick answers to the questions Cook County homeowners ask most about property tax exemptions.

Cook County property tax exemptions are statutory reductions in the Equalized Assessed Value (EAV) of a property, which in turn lower the annual property tax bill. The most common residential exemptions are the Homeowner Exemption, Senior Exemption, Senior Freeze, Home Improvement Exemption, Persons with Disabilities Exemption, and Veterans with Disabilities Exemption.
The fastest way is to enter your property address or 14-digit PIN into the search bar at the top of this page. The tool reviews your Cook County property record and flags every residential exemption you may be missing, in both current and prior tax years.
Yes. Cook County allows homeowners to file a Certificate of Error to recover up to three prior tax years of missed Homeowner Exemption savings. Once certified by the Assessor's Office, the Cook County Treasurer's Office typically issues the refund within 10 days, with total processing often running 6 to 8 weeks.
Once the initial Homeowner Exemption application is approved, it renews automatically each year as long as the owner continues to occupy the property as a primary residence. New homeowners must file an initial application to start receiving the exemption.
The current household income limit for the Cook County Senior Freeze is $65,000. The limit is scheduled to increase to $75,000 for tax year 2026 (payable in 2027), $77,000 in 2028, and $79,000 in 2029.
The Homeowner Exemption reduces the Equalized Assessed Value of the property by $10,000. The dollar savings depend on the local tax rate, averaging roughly $950 per year across Cook County, with reported savings ranging from $250 to $2,000.
Many Cook County exemptions can be stacked. For example, qualifying seniors typically receive both the Homeowner Exemption and the Senior Exemption, and may also qualify for the Senior Freeze. However, certain exemptions are mutually exclusive: the Veterans with Disabilities Exemption, for example, cannot be combined with the Persons with Disabilities Exemption or the Returning Veterans Exemption.
The annual exemption filing period typically opens in early spring. For tax year 2025 exemptions, the period opened on March 9, 2026. Even if the filing window is missed, a Certificate of Error may still be available to recover missed savings from up to three prior years.
We charge a simple contingency fee of 25 percent of the refund or savings we recover for you. There is no upfront fee and no monthly retainer. If our filing does not result in a recovered refund or reduction, you owe us nothing. You keep the remaining 75 percent of every dollar recovered, paid directly to you by the Cook County Treasurer's Office.

Do Not Leave Money on the Table

Check your Cook County property for missing exemptions in seconds. No upfront fee, no obligation. You pay 25 percent only if we recover money for you.