The Kankakee County tax sale is an annual auction run by the County Treasurer’s Office where investors buy liens on properties whose owners have fallen behind on real estate taxes. What changes hands is the right to collect the delinquent debt, not the land itself. Buyers compete by offering the lowest penalty rate they will accept, and the property owner keeps a set window of time to pay everything off and hold onto the property. The entire process runs on the Illinois Property Tax Code, and the deadlines on both sides are strict.
How a Property Ends Up on the Sale List
A parcel becomes eligible once its real estate taxes stay unpaid past the final installment deadline. The county collector then publishes an advertisement in a local newspaper naming each delinquent parcel by PIN and announcing the intent to seek a court judgment.1Illinois General Assembly. Illinois Compiled Statutes 35 ILCS 200/21-110 The published list shows the total owed in taxes, penalties, and costs.
Owners who spot their parcel still have time. Paying the full delinquent amount before the sale date keeps a third party from acquiring the lien. Once the gavel falls, someone else controls the debt and the redemption clock starts.
How the Bidding Works
The auction catches newcomers off guard because it runs backward from a normal sale. No one bids on a price for the property. Bidders compete by offering the lowest penalty rate they are willing to accept on the delinquent taxes. Illinois caps the opening penalty at 9%, and bids fall from there as buyers undercut each other. The lowest acceptable penalty wins the lien.
Bids can go all the way to 0%. The reason anyone would bid that low is the possibility of eventually taking the property through a tax deed if the owner never redeems. For a parcel where the real estate is worth far more than the delinquent taxes, that gamble can be worth earning nothing in penalty income. Most buyers, though, are after the penalty return and set a floor below which the deal does not justify tying up their capital.
Registering to Bid
Anyone who wants to buy at the Kankakee County sale has to complete a registration packet with the Treasurer’s Office before the auction.2Kankakee County Treasurer’s Office. Kankakee County Treasurer’s Office The packet requires an IRS Form W-9, which the county uses to report penalty income to the IRS.3Internal Revenue Service. About Form W-9, Request for Taxpayer Identification Number and Certification You provide your legal name (individual or entity), mailing address, and federal tax ID number. A deposit and a list fee are typically required, and registration closes well before the sale date. The Treasurer’s Office publishes current amounts and the exact deadline each year; call for current figures rather than relying on prior years.
Kankakee County’s population is around 105,000, which puts it below the 275,000 threshold that triggers Illinois’s mandatory single-bidder rule limiting related entities to one registration.4Illinois General Assembly. Illinois Compiled Statutes 35 ILCS 200/21-205 Counties below the threshold can still adopt the rule by ordinance, so if you have multiple affiliated entities, confirm with the Treasurer’s Office before registering them separately.
Paying for a Winning Bid
Winning creates an immediate obligation. The buyer has to pay the full delinquent taxes, penalties, and costs to the county collector right away. A buyer who fails to pay can be sued, or the parcel can be reoffered.5Illinois General Assembly. Illinois Compiled Statutes 35 ILCS 200/21-240 Come with sufficient funds in whatever form the Treasurer’s Office accepts that year.
On top of the tax amount, buyers pay an indemnity fund fee of up to $20 per parcel. The fund compensates owners who lose property through errors in the tax sale process. The same fee applies every time a buyer later pays subsequent years’ taxes on the same parcel, and all of it gets folded into the amount the owner has to repay to redeem.6Illinois General Assembly. Illinois Compiled Statutes 35 ILCS 200/21-295
Once payment clears, the county clerk issues a certificate of purchase describing the property, the sale date, the amount paid, and the penalty rate. Certificates are assignable, so a buyer can endorse one over to someone else and transfer every right that goes with the lien.7Illinois General Assembly. Illinois Compiled Statutes 35 ILCS 200/21-250
How Long the Owner Has to Redeem
Selling the lien does not transfer title. The owner keeps the property and retains the right to redeem by paying everything owed. The redemption deadline depends on the type of property:8Illinois General Assembly. Illinois Compiled Statutes 35 ILCS 200/21-350
- Most residential property: 2 years and 6 months from the sale date.
- Vacant non-farm land, commercial or industrial property, and buildings with 7 or more residential units: 1 year from the sale date.
The certificate holder can extend the redemption period by filing a written notice with the county clerk, but never beyond 3 years from the sale date.9Illinois General Assembly. Illinois Compiled Statutes 35 ILCS 200/21-385 Buyers sometimes extend strategically, letting more subsequent taxes stack up and increasing the total they will be repaid.
What Redemption Actually Costs the Owner
Owners pay far more than the original delinquent taxes. The redemption amount, paid through the county clerk, stacks several components:10Illinois General Assembly. Illinois Compiled Statutes 35 ILCS 200/21-355
- The certificate amount: tax principal, special assessments, penalties, and costs the buyer paid at the sale, including the indemnity fund fee.
- Accrued penalty: the auction penalty rate multiplied by the certificate amount, with the multiplier stepping up every six months. A 5% winning bid becomes 15% of the certificate amount if the owner redeems at 14 months (3 times the bid rate). At the maximum of 30 to 36 months, the multiplier reaches 6.
- Subsequent taxes the buyer paid on the property after the sale, with a flat 12% annual penalty on each of those payments.
- Legal and administrative costs: filing fees for the Take Notice form, petition for tax deed, service of notices, title search (up to $150), and publication fees if the deed process has started.
The penalty multiplier is the part owners rarely see coming. A 5% bid is not a 5% redemption cost. Wait two years and that 5% has multiplied to 20% of the certificate amount. Redeeming early saves real money.
Paying Subsequent Taxes on the Lien
Certificate holders usually pay the property taxes that come due after the sale. It is optional, but it does two useful things. Each subsequent payment is added to the redemption total and earns the holder a 12% annual penalty.10Illinois General Assembly. Illinois Compiled Statutes 35 ILCS 200/21-355 And proof that all post-sale taxes have been paid is one of the requirements for a tax deed later, so skipping them can derail the deed itself.
Each subsequent payment also triggers another indemnity fund fee of up to $20.6Illinois General Assembly. Illinois Compiled Statutes 35 ILCS 200/21-295 Build those recurring costs into your return before bidding aggressively on anything.
Getting to a Tax Deed
If no one redeems before the deadline, the certificate holder can petition the circuit court for a tax deed, which actually transfers title. The path has several steps and courts demand strict compliance at each one.
The Take Notice Form
Within 4 months and 15 days after the sale, the buyer has to deliver a Take Notice to the county clerk. It tells the owner that the lien was sold and that a deed petition will follow if no redemption occurs. Missing this deadline can disqualify the buyer from ever getting a deed on that parcel.11Illinois General Assembly. Illinois Compiled Statutes 35 ILCS 200/22-5
Notice of Expiration and the Court Petition
Between 3 and 6 months before the redemption period expires, the certificate holder must serve notice on the property owner, occupants, mortgage holders, and anyone else with an interest in the property. The notice states the sale date, the redemption deadline, and the court hearing date. Certain parties must also be served by the circuit clerk via certified mail.12Illinois General Assembly. Illinois Compiled Statutes 35 ILCS 200/22-40
In the same window, the buyer files a petition for tax deed in circuit court. The petitioner has to prove the redemption period expired without redemption, that all post-sale taxes and special assessments were paid, that any forfeitures or subsequent sales were resolved, that every required notice was properly served, and that every other statutory requirement was followed. If the court finds strict compliance on all of it, the county clerk is ordered to issue a tax deed.12Illinois General Assembly. Illinois Compiled Statutes 35 ILCS 200/22-40 “Strict” is doing real work in that sentence. Courts routinely deny tax deeds over technical notice defects even when the buyer did everything else right. Document every notice as if a judge is looking for a reason to reject it.
Two Things That Can Derail a Certificate
Federal tax liens are the first. A local property tax lien generally takes priority over an IRS lien only if the local lien was fully perfected before the federal lien arose, and the IRS lien attaches on the date of assessment. State law cannot create retroactive priority against the federal rule. Illinois property tax liens can qualify for a special superpriority under the federal tax code, but the analysis is timeline-specific and worth a lawyer on any parcel where an IRS lien shows up.
Bankruptcy is the second. When the owner files, especially under Chapter 13, the automatic stay can block a tax deed. Illinois bankruptcy courts have held that the owner retains title until a tax deed is actually recorded, not when the redemption period merely expires. A debtor who files after the redemption window closes may still be able to treat the delinquent taxes as a secured claim in a repayment plan, which effectively blocks the deed. Expect delays and legal costs that can eat into or wipe out the expected return.
Scavenger Sales
Separate from the annual sale, Kankakee County may hold a scavenger sale for liens that went unsold at prior annual sales and were forfeited to the county. The county board authorizes the scavenger sale by resolution, and the collector publishes the notice alongside the regular annual sale ad.13Illinois General Assembly. Illinois Compiled Statutes 35 ILCS 200/21-145 These parcels usually carry multiple years of unpaid taxes, lower values, or other problems that scared off bidders the first time. The bidding also works differently: buyers bid the total amount they will pay for the lien, which can be less than the full amount owed. Scavenger parcels come with the deepest discounts in the tax sale world and the most risk, including unknown property conditions and clouded title.