Illinois seniors have three different property-tax relief tools: an exemption that lowers equalized assessed value (EAV), an income-qualified assessment freeze, and a deferral loan that postpones payment. The exemption and freeze can reduce or restrain the taxable value of a home; deferral improves cash flow but creates a lien, interest charges, and a repayment obligation.
Illinois senior property-tax programs at a glance
These programs are administered differently and solve different problems. An exemption changes the value used to calculate taxes. The Low-Income Senior Citizens Assessment Freeze Homestead Exemption (SCAFHE) can hold that value at a qualifying base-year amount. The Senior Citizens Real Estate Tax Deferral Program does not reduce the bill; the state pays qualifying charges and records the amount as a loan against the property.
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| Program | What it changes | Key eligibility points | Limit or cost | Where to apply |
|---|---|---|---|---|
| Senior Citizens Homestead Exemption | Reduces annual EAV | Age 65 or older, qualifying residence, ownership or qualifying interest, and liability for the real-estate tax | Up to $8,000 of EAV in Cook County and counties contiguous to Cook County; up to $5,000 elsewhere | County assessment office; filing and renewal rules vary |
| SCAFHE assessment freeze | Exemption generally equal to the difference between current EAV and a base-year EAV while the owner remains eligible | Age 65 or older, household-income limit, qualifying ownership and occupancy, and tax liability | Annual PTAX-340 filing; a frozen EAV does not guarantee a fixed tax bill | Chief County Assessment Office |
| Senior Citizens Real Estate Tax Deferral | Postpones qualifying property taxes and special assessments | Age 65 by June 1 of the filing year, income limit, at least three years of ownership and occupancy, qualifying property and insurance | Up to $7,500 per year; total secured deferral capped at 80% of equity; 3% simple annual interest for tax years 2023 and later | County collector, using IL-1017 and IL-1018, generally January 1 through March 1 |
The EAV reductions above are statutory program limits, not estimates of a household’s actual savings. Your bill also depends on local tax rates, exemptions, assessments, and special assessments.
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Illinois property taxes are based on a property’s equalized assessed value rather than its full market price. The county assessment process determines assessed value, and an equalization factor is applied before taxing districts use the EAV to levy taxes. A reduction in EAV therefore reduces the taxable base, but the final bill still depends on the tax rates adopted by local taxing districts.
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That distinction explains why SCAFHE is an assessment freeze, not a promise that the dollar amount on every tax bill will remain unchanged. If rates rise, the bill can rise even when the EAV is held at the base-year amount. A qualifying addition, remodeling project, or other improvement can also affect value under the program’s rules.
Senior Citizens Homestead Exemption
What the exemption provides
This exemption lowers the EAV of a qualifying principal residence each year. The maximum reduction is $8,000 in Cook County and counties contiguous to Cook County, and $5,000 in all other Illinois counties. The amount is an EAV reduction, not a dollar-for-dollar credit against the tax bill.
Who generally qualifies
- You are at least 65 years old for the applicable assessment year.
- You occupy the property as a qualifying residence.
- You own the property or hold another qualifying ownership interest.
- You are liable for the real-estate taxes, subject to the county’s rules for qualifying interests.
Special circumstances can change how occupancy or ownership is evaluated. A county may have procedures for a surviving spouse, a resident of a licensed care facility, or a cooperative apartment owner. The statewide program description does not replace the county assessor’s determination.
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How to file
County procedures differ. Some assessment offices require an initial PTAX-324 application and then use a renewal or status form; others may continue the exemption automatically after an initial filing. Cook County requires an annual application. Contact the county assessment office before the local deadline and ask whether your exemption is automatic, which form applies, and what proof of age, ownership, or occupancy is required.
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How to freeze an Illinois senior’s property assessment with SCAFHE
What SCAFHE does
SCAFHE is designed for low-income senior homeowners. Once approved, the exemption is generally based on the difference between the home’s current EAV and its qualifying base-year EAV. The EAV can remain at that base amount for as long as the owner continues to meet the program’s conditions and files the required application.
2026 tax-year rules
For a first qualifying application in 2026, the official PTAX-340 form uses 2025 as the base year. For the 2026 assessment year (taxes payable in 2027), the applicant must be at least 65 during 2026 and have total household income of $75,000 or less in 2025. The form also evaluates ownership, principal-residence status, and tax liability on January 1, 2025 and January 1, 2026.
Household income is broader than a paycheck. Use the form’s definition and include the income it requires for every household member; do not assume that only the senior’s income counts. The income threshold and other conditions can change for later years, so use the form for the tax year you are filing rather than an older copy.
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Annual application steps
- Obtain the current PTAX-340 from your Chief County Assessment Office.
- Confirm your age, ownership, principal-residence occupancy, and liability for the tax on the dates specified by that year’s form.
- Calculate total household income for the required prior year using the form’s instructions.
- List any special circumstance, such as a surviving spouse, licensed-care-facility residence, or cooperative ownership, and follow the form’s additional documentation rules.
- Submit PTAX-340 to the Chief County Assessment Office by that office’s deadline and retain a copy and proof of delivery.
Why a freeze may not freeze the bill
- Taxing districts can adopt higher rates.
- New construction, additions, or substantial improvements can increase assessed value.
- Other changes in ownership, occupancy, income, or tax liability can end eligibility.
Read the approval notice and the current PTAX-340 instructions every year. An assessment freeze is valuable for limiting the EAV growth covered by the program, but it is not a guaranteed ceiling on the total tax payment.
Can you defer Illinois property taxes?
Deferral is a loan, not forgiveness
Under the Senior Citizens Real Estate Tax Deferral Program, Illinois pays some or all qualifying property-tax and special-assessment charges for an approved homeowner. The unpaid amount becomes a loan secured by a lien on the property. The balance must be repaid; the program does not erase the taxes.
Income limits and financial terms
The Illinois Department of Revenue’s PIO-64 lists a maximum household income of $75,000 for tax year 2025, $77,000 for tax year 2026, and $79,000 for tax year 2027 and thereafter. The program can defer up to $7,500 per year. The total secured balance, including interest and lien fees, cannot exceed 80% of the taxpayer’s equity interest.
For deferrals covering tax years 2023 and later, interest is 3% simple interest per year. Balances for tax years 2022 and earlier continue under the 6% rate that applied to those years. Because interest is simple rather than compound under the stated terms, ask the county collector for a payoff calculation showing principal, accrued interest, and fees.
Eligibility conditions
- You must be at least 65 by June 1 of the filing year.
- You generally must have owned and occupied the property for at least three years.
- The ownership interest and property must meet the program’s qualifying conditions.
- The home generally must be a qualifying homestead and not income-producing.
- You must maintain adequate fire or casualty insurance as required by the application.
- The property cannot have a lien for unpaid property taxes or special assessments.
Eligibility is determined for the specific filing year. A homeowner who meets the income test but lacks the required ownership period, insurance, or tax status cannot rely on the income test alone.
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Application procedure and deadline
- Contact the county collector and request the current deferral packet.
- Complete Form IL-1017 and the deferral and recovery agreement, Form IL-1018.
- Provide proof of age, ownership, occupancy, household income, insurance, and any other documentation the collector requests.
- File during the annual January 1 through March 1 window.
- Before signing, ask for a written explanation of the lien, interest rate, annual maximum, equity cap, and estimated payoff process.
The collector, rather than the assessment office, handles this program. Filing with the wrong county office or after the March 1 window can delay or prevent approval for that year.
When repayment is required
The balance generally becomes due when the property is sold or transferred, within one year after the taxpayer’s death, or within 90 days after the property stops qualifying. A surviving spouse who is at least 55 may be able to continue the deferral if all program conditions are satisfied. A lien can affect refinancing, a transfer to family, or the net proceeds from a sale, so discuss the agreement with the county collector before changing title.
Freeze, exemption, or deferral: which fits?
| Your priority | Program to examine first | Reason | Trade-off |
|---|---|---|---|
| Lower the taxable value without taking on debt | Senior Citizens Homestead Exemption | It reduces EAV each year for eligible seniors | The maximum EAV reduction is limited, and local filing rules apply |
| Limit assessment growth and meet the income test | SCAFHE | It can hold qualifying EAV at a base-year amount | Annual PTAX-340 filing is required; rates and improvements can still raise the bill |
| Keep cash available for essentials | Senior Citizens Real Estate Tax Deferral | The state pays qualifying charges now | A lien, interest, annual cap, equity cap, and repayment event apply |
Check each program independently. Qualifying for one does not automatically establish eligibility for another, and the application offices are different. A homeowner may be able to claim an exemption while also considering deferral, but the county and state forms determine how benefits interact in the individual case.
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- Confirm the tax year. Write down whether you are applying for the 2026 assessment year, taxes payable in 2027, or another year; thresholds and base-year dates are year-specific.
- Gather household records. Collect income information for every household member, proof of age, ownership documents, occupancy evidence, and prior tax bills.
- Separate the offices. Ask the Chief County Assessment Office about the senior exemption and SCAFHE; ask the county collector about deferral.
- Check timing. County exemption deadlines vary. Deferral applications generally must be filed January 1 through March 1.
- Review title and insurance. Deferral requires qualifying ownership, insurance, and a property free of liens for unpaid taxes or special assessments.
- Estimate the future obligation. For deferral, request a written payoff illustration that includes interest and lien fees and explains what happens after a sale, transfer, death, or loss of eligibility.
- Keep submission proof. Save signed forms, delivery confirmations, approval notices, and correspondence with the county.
Common mistakes and how to avoid them
Assuming a frozen EAV guarantees a frozen bill
Ask the assessor how the current tax rate, special assessments, and improvements could affect the next bill. The freeze addresses the assessment value covered by the exemption, not every component of the bill.
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Treating deferral as a grant
Deferral postpones payment and secures the balance with a lien. Do not sign IL-1018 until you understand the interest, equity limit, repayment triggers, and effect on heirs or a future sale.
Using the wrong year’s income or form
SCAFHE and deferral use different tax-year schedules and forms. For 2026 SCAFHE, the PTAX-340 uses 2025 income and a $75,000 limit. Deferral’s PIO-64 schedule lists $77,000 for tax year 2026. Verify the current form rather than copying a number from a prior filing.
Missing a local deadline
Statewide descriptions do not establish every county’s exemption deadline or renewal practice. Call the county assessment office early in the filing season and obtain the deadline in writing.
Overlooking special living arrangements
Surviving spouses, cooperative residents, and seniors temporarily living in licensed care facilities may have special rules. Explain your circumstances to the county office instead of assuming the ordinary principal-residence test decides the application.
Bottom line for Illinois seniors
Start with the Senior Citizens Homestead Exemption because it reduces EAV without creating a loan, then test whether SCAFHE can limit assessment growth if your household income and other conditions qualify. Consider deferral when immediate cash flow is the overriding need and you can accept a lien, annual interest, a $7,500 annual limit, an 80%-of-equity ceiling, and eventual repayment. Confirm the current tax-year thresholds and county instructions immediately before filing; the assessment office and county collector make separate eligibility decisions.
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