Cook County Guides November 11, 2026 7 min read

Inherited a Cook County house? What happens to the parent's exemptions, worth a median $4,076

Cook homes with all three senior exemptions saved a median $4,076 in tax year 2024. What happens when the owner dies, and what heirs must tell the Assessor.

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In tax year 2024, 108,050 Cook County homes carried all three senior exemptions: homeowner, senior and the senior freeze. The median home among them saved $4,076 from those three exemptions. Homes with the homeowner and senior exemptions but no freeze saved a median of $1,525.

Those savings belong to the owner, not the house. When a parent dies, they usually stay for the tax year of the death, then end. What the family does in between decides whether the next bills are right and whether a back bill arrives later.

Quick Answer

If your parent was alive and living in the home on January 1 of the year they died, the home keeps that tax year's exemptions. The senior freeze must still be filed for that year, and a spouse or child can sign it. After that tax year, the parent's exemptions should come off, and the owner of record should tell the Assessor. Exemptions left on by mistake can be billed back for up to three years, or six in some cases, with 10% yearly interest. Anyone can appeal the assessment at the Assessor without a lawyer. An heir who owns the home and lives there on January 1 can apply for exemptions in their own name for that tax year.

The year of death: the exemptions usually stay

The Assessor's rule is simple. If your parent was alive and living in the home as their main residence on January 1 of the year they died, the home is eligible for that tax year.

The homeowner and senior exemptions renew on their own. The senior freeze must be filed every year, so a spouse or child files it for the year of death. The Assessor asks you to:

Sign your parent's name on the application, write "deceased" in parentheses, then sign your own name and write son or daughter.
Complete the Assessor's affidavit for a freeze claimed for a deceased taxpayer.
Attach a copy of the death certificate.
Attach copies of your parent's ID and your own.
Attach letters of office, successor trustee papers, or power of attorney papers, if you have them.

A surviving spouse under 65 keeps the senior exemption for the rest of the year of death, then applies again at 65. State law also gives a younger surviving spouse the freeze for the year before and the year of the death, if every other rule is met.

Tax year versus bill year. Cook bills are paid a year behind. If a parent died in June 2025, tax year 2025 (bills paid in 2026) keeps the exemptions. Tax year 2026 (bills paid in 2027) should not carry them, unless someone qualifies in their own right.

After that: tell the Assessor

Once the tax year of death is over, the parent's exemptions should come off. Because the homeowner and senior exemptions renew automatically, they can keep showing up anyway.

State law has the Assessor collect death records from the state health department, the county Clerk and Social Security, and end the senior exemption when those records show the home no longer qualifies. Don't rely on that. The same law puts the duty to tell the Assessor on the owner of record.

The tool is the Assessor's Exemption Removal Waiver. You list the PIN, the tax year and the exemptions that no longer apply, and sign. You can file it online or on paper. Then check the exemption history on the Assessor's property page each year until the estate is settled.

The back-bill risk

The Assessor has a unit that audits exemptions and bills back the ones that should not have been there. It starts with a Notice of Discovery. If the audit finds a problem, a Notice of Intent to Record a Lien follows, and you have 30 days to ask for a hearing.

How far back it can go, under state law:

One or two wrong exemptions: up to three collection years, plus 10% interest a year.
Three or more: up to six collection years, plus 10% interest a year and a 50% penalty.

There is a break for families. A spouse, child, grandchild, brother, sister, niece or nephew who inherited the home does not owe the penalty for a senior exemption that renewed automatically. They still owe the missing taxes and the interest.

For scale, one year of all three senior exemptions was worth a median of $4,076 in tax year 2024. In January 2022 the Assessor said its audits over the prior three years had stopped more than 300 exemptions that would have gone to deceased owners. Our guide to the back bill for an exemption a home shouldn't have had covers how far back it reaches.

Appealing while the estate is open

The assessment can still be wrong after a death, and the appeal windows open by township whether or not probate is finished. See your property has two appeal windows.

At the Assessor, no one needs a lawyer to file. Anyone filing for someone else needs the Assessor's authorization form.
At the Board of Review, the rules let individuals file for property titled in their own names and require an attorney for companies. The Board's online form lists executor and beneficiary as appellant types, and its attorney authorization form can be signed by an executor. The rules don't say plainly whether an executor may file without an attorney for a home still titled to the parent. Ask the Board before your township closes, and attach your letters of office.

Keep the bills paid during probate

Redirect the bill. Bills keep coming in your parent's name, often to the old address. File the Treasurer's Name/Address Change Application.
Pay by PIN. Anyone can pay online at the Treasurer's site by PIN, free with a bank account.
Know the cost of waiting. Late taxes for tax year 2023 and later add 0.75% interest a month. Taxes still unpaid at the Treasurer's annual tax sale can be sold to an investor.
Name a backup. The Treasurer's free third-party notification program sends a copy of any delinquency notice to a person you choose.
Check the escrow. If a mortgage servicer pays the taxes, confirm it still is.

When an heir moves in

An heir can apply in their own name for the homeowner exemption for any tax year in which they owned the home (or held an interest in it shown in writing) and lived there as their main home on January 1.

If you move in during August 2026, your first January 1 is January 1, 2027. That makes tax year 2027 (bills paid in 2028) your first year.

The Assessor wants your ID showing the address and, if you are not yet on the recorded deed, proof that you are responsible for paying the taxes, such as an unrecorded deed or a trust agreement. If the estate is still open and you have none of these yet, ask the Assessor what it will accept. If you are 65 or older, apply for the senior exemption too, and the freeze if you meet its income and residence rules. Applying late is not fatal: the Assessor's refund process (it calls it a Certificate of Error) covers recent years. See Certificate of Error vs. appeal.

Where Censum fits

Censum's exemption check shows which exemptions are on a Cook County home now, so a family can see whether the parent's exemptions are still on the bill or whether a new owner's are missing. If an heir who qualified missed exemptions in past years, Censum can prepare the Assessor's refund filing, or the heir can file the county's free form. For a possible appeal, the free appeal check shows the home's appeal odds and its township's window.

The numbers behind this article

The $4,076, $1,525 and 108,050 figures are Censum's tabulation of PTAXSIM, the Cook County Assessor's Office research database, for tax year 2024 (bills paid in 2025). Savings are each exemption's amount, capped at the home's equalized assessed value, times its tax code rate; this formula reproduces the database's bill totals. Homes with homeowner, senior and freeze exemptions: 108,050, median savings $4,076 (middle half $2,724 to $5,641). Homes with homeowner and senior but no freeze: 258,616, median $1,525. The Assessor says PTAXSIM results are not official. The 300-plus figure is from the Assessor's January 19, 2022 news release.

FAQ

Does my late mother's senior exemption stay on the house?

For the tax year she died, yes, if she lived there on January 1. After that it should come off unless the new owner qualifies.

Who signs the senior freeze for the year of death?

A spouse or child. Sign your parent's name with "deceased," then your own name and relationship, and attach the Assessor's deceased-taxpayer affidavit, the death certificate and both IDs.

What if the exemptions stayed on for a few years?

Tell the Assessor and use the Exemption Removal Waiver. The Assessor can bill back up to three years with 10% yearly interest, or six with a penalty when there are three or more wrong exemptions. Close relatives who inherited avoid the penalty on an auto-renewed senior exemption, not the taxes or interest.

Can I appeal the assessment before probate closes?

At the Assessor, yes, and no lawyer is needed. At the Board of Review, ask whether you can file as executor without an attorney before your township closes.

When can I get the homeowner exemption myself?

For the first tax year in which you owned the home and lived there on January 1. Apply when the Assessor opens that year's filing, or later through its refund process.

Sources

Sources accessed November 11, 2026.

Next step

Check which exemptions are on the inherited home now, so the bills match who actually qualifies. Check the home's exemptions

Censum LLC is a data and analytics company, not a law firm and not a tax advisor. Censum is independent and is not affiliated with Cook County or any government agency.