DuPage County Property Tax Exemptions: Types, Filing, and Appeals

DuPage County property tax exemptions can take thousands of dollars off your annual bill, and because the county borders Cook, several of them come in at higher amounts than the rest of Illinois gets. Most homeowners qualify for at least the General Homestead Exemption; seniors, people with disabilities, and veterans can stack additional reductions on top of it. A severely disabled veteran can wipe out the property tax bill entirely on a home worth up to roughly $750,000.

How These Exemptions Actually Cut Your Bill

Every DuPage exemption works by subtracting a dollar figure from your property’s equalized assessed value (EAV) before the tax rate is applied. Your EAV is roughly one-third of market value, adjusted by the state equalization factor. Composite tax rates across much of the county run between about 6% and 9% of EAV, so an $8,000 EAV reduction saves somewhere between $480 and $720 a year. Stacking matters: a senior with the Senior Homestead Exemption and the Assessment Freeze can save well over $1,000 annually.

General Homestead Exemption

This is the baseline exemption for owner-occupants and reduces your EAV by up to $8,000. DuPage qualifies for the higher figure because it borders Cook County; counties farther from Cook cap this exemption at $6,000.¹ You have to own and occupy the home as your primary residence on January 1 of the tax year.

DuPage township assessors typically apply this one automatically. You usually don’t file anything.² If you just bought your home or don’t see the reduction on your bill, call your township assessor’s office to confirm.

Senior Citizens Homestead Exemption

Turn 65 during the assessment year and you qualify for an additional $8,000 off your EAV, on top of the General Homestead Exemption. Again, that’s higher than the $5,000 available in counties that don’t border Cook.³ No income test. You just have to own and live in the home.

Once you’re enrolled, the county sends annual renewal information, and most seniors don’t need to take further action to keep receiving the exemption.⁴ The exemption continues if you move into a licensed care facility, as long as your spouse (also 65 or older) still lives in the home — or even if the home sits unoccupied while you retain ownership.³

Senior Citizens Assessment Freeze

This one is powerful and also the one seniors most often lose by missing a deadline. Instead of a flat EAV reduction, the freeze locks your EAV at a base-year level. The gap between your current EAV and that frozen base is subtracted from your taxable value, so in a county where home values keep climbing, the savings grow every year you stay in the home.⁵

Eligibility: 65 or older, owner-occupant, and a total household income of $75,000 or less for tax year 2026. The threshold rises to $77,000 in 2027 and $79,000 in 2028 and beyond.⁵ “Household income” means everyone living in the home, not just the owner.

You must file Form PTAX-340 every year, with income documentation like tax returns or Social Security benefit statements. The DuPage filing deadline is July 1.⁶ Miss it and you lose the freeze for that cycle.

Senior Real Estate Tax Deferral

Technically not an exemption, but worth knowing about if the freeze still leaves you with a bill you can’t pay. The state’s Tax Deferral Program pays your property tax directly, placing a lien on the home. The balance accrues 3% simple interest and comes due when you sell or within a year of your death.⁷

For tax year 2026 you need to be 65 by June 1, have household income of $77,000 or less, have owned and occupied the home for at least three years, have no delinquent property taxes, and carry fire or casualty insurance. The maximum deferral is $7,500 per year, and the running total (with interest and fees) can’t exceed 80% of your equity. The filing window runs January 1 through March 1. A surviving spouse at least 55 years old can continue the deferral if they act within six months of the original participant’s death.⁷

Persons with Disabilities Homestead Exemption

Homeowners with a disability get a $2,000 annual EAV reduction. You must occupy the property as your primary residence, be liable for the taxes, and hold an ownership interest or qualifying leasehold.⁸ The statute doesn’t fix a specific disability rating; eligibility is established through documentation from a federal or state agency or a licensed physician.

File the initial application on Form PTAX-343 with the DuPage County Supervisor of Assessments, then renew annually with Form PTAX-343-R.⁹ This exemption stacks with the General Homestead Exemption, so a disabled homeowner in DuPage sees a combined $10,000 EAV reduction.

Veterans with Disabilities Homestead Exemption

Veterans with a service-connected disability rated by the U.S. Department of Veterans Affairs get an EAV reduction scaled to the rating:¹⁰

30% to 49% disability: $2,500 annual EAV reduction
50% to 69% disability: $5,000 annual EAV reduction
70% or higher disability: the first $250,000 of EAV is fully exempt

That top tier matters. A DuPage home with a market value around $750,000 has an EAV of roughly $250,000, so a veteran at 70% or higher owes zero property tax on it. The VA certification must be current as of the application date.

Surviving Spouse Benefits

If a disabled veteran who received this exemption dies, the surviving spouse can keep the same benefit as long as they haven’t remarried and still own and occupy the property. The spouse can also carry the exemption to a new primary residence, but only once, and the original home must be sold first. Use Form PTAX-342 to claim or transfer, and renew every year.⁹

Returning Veterans Homestead Exemption

Veterans returning from active duty in an armed conflict get a $5,000 EAV reduction for the tax year they come home and the following tax year.¹¹ If you buy your first home after January 1 of the return year, you can start the exemption the next tax year.

The statute covers any Illinois resident who served in the U.S. Armed Forces, Illinois National Guard, or U.S. Reserve Forces. You must own and occupy the property as your principal residence and be liable for the taxes. File during the window set by the county.¹¹

Homestead Improvement Exemption

Renovate or add on to your home and the jump in assessed value can be partially shielded for four years. The Homestead Improvement Exemption covers up to $75,000 per year in fair cash value from new improvements or from rebuilding after a catastrophic event. Routine maintenance and repairs that just preserve the structure don’t qualify; the work has to actually add value.¹²

The four-year clock starts when you finish the improvement and occupy the home, or at the next general assessment, whichever is later. You can only claim it on one Illinois property per assessment year. Many DuPage township assessors apply this exemption automatically when they see a building permit, but confirm with your assessor’s office after a project.

Natural Disaster Homestead Exemption

Rebuild after a fire, flood, severe storm, or similar catastrophic event, and this exemption prevents the rebuilt home from being taxed at a higher value than the original. The amount equals the difference between your current EAV and your EAV from the year before the disaster, and it stays in place at that level until you sell or transfer the property.

To qualify, rebuild within two years of the disaster, and keep the new structure within 110% of the original square footage. File Form PTAX-327 with the Supervisor of Assessments no later than the first taxable year after rebuilding is complete, and refile every year to keep the exemption. A presidential or gubernatorial disaster declaration isn’t required.

If Your Home Is in a Trust

Moving your home into a living trust doesn’t automatically kill your exemptions, but you have to prove you’re a beneficiary. When you apply or renew, include the pages of the trust agreement that identify you as a beneficiary. Without that, the county can’t process the exemption. Families often get caught by this during estate planning transitions, so don’t assume existing exemptions carry over without verifying.

How to Apply and When

How much work you have to do depends on the exemption. The General Homestead and Senior Homestead exemptions are usually handled by DuPage township assessors without any filing from you.²⁴

The ones that require annual filing use specific state forms:

PTAX-340: Senior Citizens Assessment Freeze
PTAX-343: Persons with Disabilities (initial)
PTAX-343-R: Persons with Disabilities (annual renewal)
PTAX-342: Veterans with Disabilities
PTAX-327: Natural Disaster

Forms are available through the DuPage County Supervisor of Assessments website or your local township assessor’s office.¹³ Income-based filings like the Assessment Freeze require supporting documentation such as tax returns or Social Security benefit statements. The Assessment Freeze deadline in DuPage is July 1.⁶ Other deadlines vary; verify with your township assessor or the Supervisor of Assessments.

Neither the Senior Homestead Exemption nor the Assessment Freeze requires repayment of any savings you’ve already received.⁴

If an Exemption Is Denied

Start with your township assessor’s office and ask to review the property file. Data entry errors, missing ownership records, and incorrect square footage often get fixed informally without a formal appeal.¹⁴

If that doesn’t resolve it, file a formal appeal with the DuPage County Board of Review. The filing window closes 30 days after publication of your township’s assessment roll; publication dates are posted on the Supervisor of Assessments website. Submit the appeal form in duplicate with supporting evidence, including at least three comparable properties similar in size and design, ideally from your neighborhood. Market-value appeals need recent sales as comparables; uniformity appeals need similarly assessed properties with similar features. If you disagree with the Board’s decision, you can escalate to the Illinois Property Tax Appeal Board or file in circuit court.¹⁴

1
Illinois General Assembly. Illinois Code 35 ILCS 200/15-175 – General Homestead Exemption
2
DuPage County. General Homestead Exemptions – Residential
3
Illinois General Assembly. Illinois Code 35 ILCS 200/15-170 – Senior Citizens Homestead Exemption
4
DuPage County. Senior Citizens’ Homestead Exemption
5
Illinois General Assembly. Illinois Code 35 ILCS 200/15-172 – Low-Income Senior Citizens Assessment Freeze Homestead Exemption
6
DuPage Township Assessor. Definitions of the Different Exemptions
7
Illinois Department of Revenue. Senior Citizens Real Estate Tax Deferral Program (PIO-64)
8
Illinois General Assembly. Illinois Code 35 ILCS 200/15-168 – Homestead Exemption for Persons with Disabilities
9
Illinois Department of Revenue. Property Tax Relief – Homestead Exemptions, PTELL, and Senior Citizens Real Estate Tax Deferral Program
10
Illinois General Assembly. Illinois Code 35 ILCS 200/15-169 – Homestead Exemption for Veterans with Disabilities and Veterans of World War II
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Illinois General Assembly. Illinois Code 35 ILCS 200/15-167 – Returning Veterans Homestead Exemption
12
Justia Law. Illinois Code 35 ILCS 200/15-180 – Homestead Improvements
13
DuPage County. Supervisor of Assessments Forms and Documents
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DuPage County. Appeal Process