Illinois Senior Homestead Exemption Guide: Senior Exemption, Senior Freeze, Forms, Deadlines & Savings
The Illinois Senior Citizens Homestead Exemption is a property-tax relief program for qualifying homeowners age 65 or older. It does not subtract a fixed dollar amount from the tax bill. It reduces the home’s equalized assessed value, commonly called EAV, before the local tax rate is applied.
Illinois seniors also need to separate three programs that are often confused: the regular Senior Citizens Homestead Exemption, the Low-Income Senior Citizens Assessment Freeze Homestead Exemption, and the Senior Citizens Real Estate Tax Deferral Program. Each program uses a different office, form, deadline and financial result.
What Is the Illinois Senior Homestead Exemption?
The Illinois Senior Citizens Homestead Exemption is an annual homestead exemption for property occupied as a residence by a person who is 65 years of age or older, is liable for the real estate taxes, and is an owner of record or has a qualifying legal or equitable interest in the property. The benefit reduces EAV, not market value and not the tax bill dollar-for-dollar.
Regular Senior Exemption
Available to qualifying Illinois seniors age 65 or older. There is no statewide household-income test for the regular Senior Citizens Homestead Exemption, but local filing and verification requirements can vary by county.
Potential EAV reduction: up to $8,000 or $5,000 depending on county group.
Senior Assessment Freeze
The Senior Freeze is a separate income-tested exemption. It generally freezes the qualifying home’s EAV base amount, but it does not freeze the final property-tax bill because rates and improvements can still change.
2026 income limit: $75,000 for taxable year 2026.
Senior Tax Deferral
The Senior Citizens Real Estate Tax Deferral Program is not an exemption. It lets qualifying seniors postpone property taxes, subject to statutory limits, interest, lien rules and repayment requirements.
Filing office: county collector / treasurer.
Illinois Senior Exemption vs Senior Freeze vs Senior Deferral
Use this comparison before filing. The most common mistake is assuming the Senior Freeze and Senior Citizens Homestead Exemption are the same program.
| Program | Main Purpose | Core Eligibility | Common Form / Office | What It Does Not Do |
|---|---|---|---|---|
| Senior Citizens Homestead Exemption 35 ILCS 200/15-170 |
Reduces the home’s EAV for qualifying seniors. | Age 65+, residence occupancy, tax liability and qualifying ownership/legal interest. | PTAX-324 or PTAX-329 where required; file/verify with the Chief County Assessment Office or Cook County Assessor. | Does not freeze the bill and does not remove all property taxes. |
| Low-Income Senior Citizens Assessment Freeze Homestead Exemption 35 ILCS 200/15-172 |
Limits EAV increases for income-qualified senior homeowners by using a base amount. | Age 65+, household-income limit, January 1 residence rule, tax liability and qualifying ownership/legal interest. | PTAX-340; generally annual filing with the Chief County Assessment Office unless a county-specific process applies. | Does not freeze tax rates, special district rates, new improvements or the final bill amount. |
| Senior Citizens Real Estate Tax Deferral 320 ILCS 30 |
Allows qualifying seniors to defer all or part of property taxes and special assessments. | Age 65 by June 1, household-income limit, three-year ownership/occupancy, qualifying property, no delinquent taxes and adequate insurance. | IL-1017 and IL-1018; apply through the county collector/treasurer by March 1. | Does not forgive tax. Deferred taxes and interest become a lien until repaid. |
| Illinois Property Tax Credit Income-tax credit, not homestead exemption |
Allows eligible owners to claim a credit on Form IL-1040 for qualifying Illinois property tax paid on a principal residence. | Must own the Illinois principal residence and meet income-tax credit rules. | Schedule ICR with Illinois income tax return. | Does not change the county property-tax bill or exemption status. |
Illinois Senior Homestead Exemption Amounts for 2026
The senior exemption amount is an EAV reduction. To estimate tax savings, multiply the allowed EAV reduction by the applicable composite tax rate for the parcel.
Cook County & Contiguous Counties
The regular Senior Citizens Homestead Exemption maximum reduction is $8,000 of EAV in Cook County and counties contiguous to Cook County.
Example: $8,000 × 7.50% illustrative rate = about $600 estimated savings.
All Other Illinois Counties
In Illinois counties outside the Cook/contiguous county category, the regular Senior Citizens Homestead Exemption maximum reduction is $5,000 of EAV.
Example: $5,000 × 7.50% illustrative rate = about $375 estimated savings.
Senior Freeze Income Schedule
Current Illinois law sets the Senior Freeze household-income limit at $75,000 for taxable year 2026, $77,000 for taxable year 2027, and $79,000 for taxable year 2028 and later.
Income is household income for the calendar year preceding the taxable year.
How to Apply for the Senior Homestead Exemption in Illinois
Illinois senior exemptions are locally administered. IDOR publishes statewide rules and references forms, but your individual application normally goes through the Chief County Assessment Office, Supervisor of Assessments, County Assessor, or Cook County Assessor.
Identify the County and PIN
Find the Property Index Number, also called PIN, parcel number, permanent index number or property number. It appears on the tax bill, assessment notice or county property-search record.
Confirm the Senior’s Age and Residence Status
The regular Senior Citizens Homestead Exemption is for a person 65 or older who occupies the property as a residence, is liable for paying real estate taxes, and has a qualifying ownership or legal/equitable interest.
Check Whether the Regular Senior Exemption Is Already Applied
Search the county property record or exemption history before filing again. If a prior owner’s exemption appears, do not assume it transfers to you. If your own exemption disappeared, ask whether a renewal, certificate of status or correction process is required.
Choose the Correct Senior Program
Use the regular Senior Exemption for age-based EAV reduction. Use the Senior Freeze only if the household-income limit and base-year requirements are met. Use Senior Tax Deferral only if the goal is postponing payment, not reducing taxable value.
Prepare the Right Form and Proof
Common forms include PTAX-324 for an initial Senior Citizens Homestead Exemption, PTAX-329 for senior status verification where required, PTAX-340 for the Senior Freeze, and IL-1017/IL-1018 for the Senior Tax Deferral Program.
File With the Correct Local Office
Senior exemption and Senior Freeze filings usually go to the county assessment office. Senior tax deferral filings go to the county collector or treasurer. Do not send a local exemption application to the wrong state office unless the form specifically says so.
Use Your County’s Current Deadline
Filing dates vary by county and by program. The Senior Freeze statute generally uses July 1 for counties with fewer than 3,000,000 inhabitants unless the county sets another date; Cook County uses its own published application periods.
Verify the Exemption on the Bill
After approval, check the second-installment bill or county tax record. Look for the exemption name, EAV reduction, taxable value and tax year. A submitted form is not the same as an approved exemption.
Illinois Senior Property-Tax Forms at a Glance
Form names can vary by county portal, but these are the important statewide form references and office roles seniors should understand before filing.
| Form / Filing | Used For | Where to File or Verify | Watch For |
|---|---|---|---|
| PTAX-324 Application for Senior Citizens Homestead Exemption |
Initial regular senior exemption where the county requires this state form or a local equivalent. | Chief County Assessment Office, Supervisor of Assessments, County Assessor, or Cook County Assessor. | Age proof, principal residence, tax liability, ownership/legal interest and county deadline. |
| PTAX-329 Certificate of Status — Senior Citizens Homestead Exemption |
Senior status verification or renewal where the county requires annual or periodic confirmation. | County assessment office. | Do not ignore a mailed verification notice; missing it can remove relief for that year. |
| PTAX-340 Low-Income Senior Citizens Assessment Freeze Application and Affidavit |
Annual Senior Freeze application for income-qualified seniors. | County assessment office; Cook County may use an online portal or Cook-specific application. | Household-income documentation, January 1 residence, base amount and annual renewal. |
| IL-1017 and IL-1018 | Application and recovery agreement for Senior Citizens Real Estate Tax Deferral. | County collector / county treasurer. | March 1 filing, lien, interest, $7,500 annual deferral cap and 80% equity rule. |
| Schedule ICR | Illinois income-tax property-tax credit, separate from the county homestead exemption. | Filed with the Illinois individual income tax return. | Only for qualifying paid property taxes on an Illinois principal residence; income limits apply. |
Illinois Senior Homestead Exemption Savings Calculator
Use this simple estimator to understand how an EAV reduction can affect an Illinois property-tax bill. It is educational only and does not replace an official county tax calculation.
Formula for exemption estimates: EAV reduction × composite tax rate = estimated tax impact. Senior Freeze results depend on base amount, additions, local rates and county approval. Deferral estimates show a payment delay, not permanent savings.
Illinois Senior Homestead Deadlines Seniors Should Check
Illinois deadlines are not identical across counties. Treat these as decision points, then verify the exact date with the local county office responsible for your property.
January 1
Many Illinois homestead and Senior Freeze rules look at principal residence, ownership or household facts as of January 1 of the taxable year.
March 1
Senior Citizens Real Estate Tax Deferral applications are filed with the county collector/treasurer on or before March 1 each year.
July 1 / Local Date
For many non-Cook counties, the Senior Freeze filing date is July 1 unless the county has adopted a different date. Cook County publishes its own application periods.
County Notices
If your county mails a senior renewal, certificate-of-status, audit or correction notice, respond by the date on that notice rather than relying on a general statewide article.
Which Illinois Office Handles Senior Homestead Questions?
Contacting the wrong office is one of the biggest reasons senior exemption issues take longer to fix. Illinois separates assessment, collection and state guidance.
Chief County Assessment Office / Assessor
Best starting point for Senior Homestead Exemption, Senior Freeze, exemption status, missing exemptions, EAV questions and local forms.
- Ask whether PTAX-324, PTAX-329 or PTAX-340 is required.
- Confirm local deadline and filing method.
- Verify the exemption after processing.
County Collector / Treasurer
Best starting point for tax bills, payments, delinquent taxes, payment receipts and the Senior Citizens Real Estate Tax Deferral Program.
- Use for IL-1017 and IL-1018 deferral filing.
- Ask for payoff amounts and lien-release steps.
- Do not use this office for EAV exemption approval unless directed.
Illinois Department of Revenue
Best for statewide guidance, publications, property-tax division questions, tax-deferral fund questions, form libraries and statutory program explanations.
- Use IDOR to verify statewide rules.
- Use county offices for parcel-specific approval.
- Do not assume IDOR processes your local exemption application.
Illinois DOR Property-Tax Contact and Cook County Senior Video
Most senior exemption filing is local, but IDOR publishes statewide guidance and contact information. Cook County homeowners can also use the official Cook County Assessor video below for Cook-specific senior and Senior Freeze filing context.
Illinois Department of Revenue — Property Tax Division
Property-tax mailing address:
Illinois Department of Revenue
Property Tax Division
PO Box 19033
Springfield, IL 62702-9033
Property tax phone: 217-785-1356
Senior deferral / local tax allocation contact: 217-785-6518 · REV.LOCALTAX@ILLINOIS.GOV
Open Springfield Map ↗Official Illinois Senior Homestead Exemption Resources
Open these official resources before filing. Each link includes what to do after opening it, so the page does not become just a government-link directory.
Illinois DOR — Property Tax Exemption Information
Statewide IDOR page covering homestead exemptions, Senior Citizens Homestead Exemption, Senior Freeze, disability and veteran relief.
- Scroll to Senior Citizens Homestead Exemption.
- Confirm the current maximum EAV reduction for your county category.
- Read the filing requirement note and then use your county office for the actual application.
- Scroll to the Senior Freeze section if you also meet the income-tested rules.
Illinois General Assembly — 35 ILCS 200/15-170
Controlling statute for the regular Senior Citizens Homestead Exemption.
- Use this when the exact statutory eligibility language matters.
- Look for age, residence, ownership/legal-interest and tax-liability rules.
- Do not use statute text alone as the filing method; your county controls the local process.
Illinois General Assembly — 35 ILCS 200/15-172
Controlling statute for the Low-Income Senior Citizens Assessment Freeze Homestead Exemption.
- Review the household-income definition and maximum income limitation.
- Check the January 1 residence and ownership/legal-interest requirements.
- Confirm whether your county uses July 1 or another published deadline.
- Remember that the Senior Freeze can be audited by the county assessment office.
Illinois DOR — Senior Citizens Real Estate Tax Deferral
Official deferral page and FAQ for seniors considering payment postponement instead of an exemption.
- Read the deferral FAQ before signing any agreement.
- Confirm the March 1 annual filing period with your county collector.
- Ask about the $7,500 annual cap, 3 percent interest and 80 percent equity rule.
- Keep a copy of IL-1018 because it is the recovery agreement.
Illinois DOR — Tax Forms
Official state form library. Use it carefully because many counties use local portals or county-specific form packets.
- Search by form number, such as PTAX-324, PTAX-329, PTAX-340, IL-1017 or IL-1018.
- Download current forms directly from IDOR or your county, not from an old third-party PDF.
- Follow your county’s submission instructions even when the form itself is statewide.
Cook County Assessor — Senior Exemption
Cook County-specific application and exemption guidance for the largest Illinois county.
- Use this only for property in Cook County.
- Check whether your property already has the Senior Exemption or needs an application.
- Use the Cook application portal or branch-office instructions when available.
- For the Senior Freeze, open Cook County’s separate Senior Freeze page.
Common Illinois Senior Homestead Exemption Mistakes
Mistakes That Can Cost Seniors Relief
- Thinking an $8,000 EAV exemption means $8,000 cash savings.
- Assuming the regular Senior Exemption and Senior Freeze are the same.
- Filing a Senior Freeze application without household-income documentation.
- Using the tax payment year instead of the taxable/assessment year.
- Sending a Senior Tax Deferral application to the assessment office instead of the collector/treasurer.
- Ignoring county renewal, audit or certificate-of-status notices.
Better Filing Habits
- Save your PIN before starting any application.
- Check the county exemption record before applying again.
- Separate EAV reduction from tax-bill savings.
- Use county deadlines, not a generic statewide date.
- Keep copies of all filed forms and confirmations.
- Verify the exemption on the later tax bill.
What Should Illinois Seniors Do Next?
| Your Situation | Best Next Step | Office to Contact |
|---|---|---|
| You are turning 65 during the taxable year. | Ask the county assessment office whether you can apply now and which proof of age/residence is required. | Chief County Assessment Office / County Assessor |
| You already receive the regular Senior Exemption. | Check whether your county requires annual PTAX-329 verification or whether it renews automatically unless facts change. | County assessment office |
| Your household income is within the Senior Freeze limit. | Prepare income records and file PTAX-340 or the county equivalent before the local deadline. | County assessment office / Cook County Assessor |
| You cannot afford the upcoming tax bill. | Review the Senior Citizens Real Estate Tax Deferral Program before March 1, including lien and interest rules. | County collector / treasurer |
| The senior exemption is missing from the bill. | Confirm the tax year and PIN, then ask whether the application is pending, denied, expired, omitted or correctable. | County assessment office first; collector if bill correction is already approved |
| The assessed value is too high even with exemptions. | Review the local assessment appeal or board of review deadline; exemption filing and assessment appeal are separate tasks. | County assessment office / Board of Review |
Illinois Senior Homestead Exemption FAQs
What is the Illinois Senior Citizens Homestead Exemption?
It is an annual property-tax exemption for qualifying Illinois homeowners age 65 or older. It reduces equalized assessed value, or EAV, for an occupied residence where the senior is liable for the real estate taxes and has a qualifying ownership or legal/equitable interest.
How much is the Illinois senior homestead exemption?
The regular Senior Citizens Homestead Exemption can reduce EAV by up to $8,000 in Cook County and counties contiguous to Cook County, or by up to $5,000 in all other Illinois counties. Actual tax savings depend on the parcel’s composite tax rate.
Does Illinois have an income limit for the regular Senior Exemption?
The regular Senior Citizens Homestead Exemption is age-based and residence-based; IDOR’s regular senior exemption summary does not list a statewide income test. The separate Senior Freeze does have a household-income limit.
What is the Illinois Senior Freeze income limit for 2026?
For taxable year 2026, Illinois law sets the Low-Income Senior Citizens Assessment Freeze Homestead Exemption income limit at $75,000 for all qualified property. The law lists $77,000 for taxable year 2027 and $79,000 for taxable year 2028 and thereafter.
Does the Illinois Senior Freeze freeze my tax bill?
No. The Senior Freeze generally limits the qualifying property’s EAV by using a base amount. The final tax bill may still change if tax rates change, special district charges change, or added improvements affect the assessment.
What forms are used for Illinois senior property-tax relief?
Common forms include PTAX-324 for the regular Senior Citizens Homestead Exemption, PTAX-329 for senior status verification where required, PTAX-340 for the Senior Freeze, and IL-1017/IL-1018 for the Senior Citizens Real Estate Tax Deferral Program. Counties may use local portals or local versions.
Where do I file the Illinois Senior Homestead Exemption?
File or verify the senior exemption with the county assessment office responsible for the property, such as the Chief County Assessment Office, Supervisor of Assessments, County Assessor or Cook County Assessor. The Senior Tax Deferral Program is handled through the county collector or treasurer.
Do I have to renew the Illinois Senior Exemption every year?
Renewal and verification practices vary by county. Some counties require a certificate of status or annual verification, while others may renew certain exemptions automatically unless ownership, occupancy or eligibility changes. The Senior Freeze generally requires annual filing.
Can a surviving spouse keep the Illinois senior exemption?
Surviving-spouse treatment depends on the specific program and facts. Illinois Senior Freeze law includes limited surviving-spouse provisions, and the Senior Tax Deferral Act also has surviving-spouse continuation rules. Contact the county assessment office or collector promptly after a death.
Is the Senior Citizens Real Estate Tax Deferral Program an exemption?
No. The deferral program postpones payment of qualifying property taxes and special assessments. Deferred taxes and interest are secured by a lien and must be repaid under the program rules.
Independent Illinois Property-Tax Guide
County-Appraisal-District.org is an independent educational resource. It is not operated by, affiliated with, or endorsed by the Illinois Department of Revenue, Illinois General Assembly, Cook County Assessor, any Illinois county assessment office, county treasurer, county collector or board of review.
This page explains publicly available Illinois senior property-tax relief rules. It does not determine eligibility, submit applications, calculate an official tax bill, provide legal advice or provide tax advice. Always verify current forms, deadlines, income limits, office procedures and parcel-specific treatment with the responsible government office.
Property-owner and property-tax records should not be used for employment screening, tenant screening, credit eligibility, insurance underwriting or any regulated consumer-reporting purpose. This website is not a Consumer Reporting Agency.