Illinois Properties With Back Taxes: Tax Delinquent Properties for Sale List 2026
A property has back taxes when its owner has not paid the property tax bill. In Illinois the county can then sell it at a tax sale.
1 tax delinquent property is on Illinois county lists right now, with another 365 from sales that have already been held (see the past sales view), across 3 counties, 1 of them with a sale date published. In Illinois the county calls this the annual tax sale (you will also see delinquent tax list, scavenger sale). Every row below comes from the county's own published list; the parcel numbers, addresses and opening bids are the county's figures, last retrieved 2026-07-31.
Watch: researching a tax lien before you buy
A narrated walkthrough: find tax liens by county, read the Research Score, risk flags and sources, set your maximum bid and save a Deal Radar.
Read the transcript
If you came here for tax liens, start in Property Research and choose Tax Lien.
Liens without a set sale date sit under Timing not assigned yet. That includes over the counter liens you can buy now, with no auction.
Pick a state and a county. I'll use Maricopa County, Arizona.
Tick Mapped only to see each lien on the map, and switch to aerial imagery to look at the property from above.
Open a lien to see the full research.
The Research Score grades it from A to D, out of one hundred, and shows where the points come from.
Estimated value and confidence gives you a value range, and tells you how far to trust it. It's a starting point, not an appraisal.
Risk flags come up before you buy: whether it's still available, liens that may survive, and a source that may be out of date. Open one to see what to check.
The due diligence checklist shows the lien to value ratio and the back taxes, and what you still need to verify yourself.
Sources and freshness links every fact back to the county's own record.
Then calculate your maximum bid. You get a comfortable range, a caution range, and the price where you should stop.
Back in Research, mark it as a bid candidate, and add private notes that only you can see.
Save your search as a Deal Radar, and new matches come to you by email.
That's tax liens: from a county to a lien worth buying, with every fact sourced to the county.
Counties with a published list
The first 1 from the Illinois list
The first 1 current parcels as published by the counties, no account needed. Owner of record, research scores, maps, filters, reports and CSV export are in the member research view.
| Address | County | Opening bid | Sale date |
|---|---|---|---|
| 1280 OAK HILL ROAD LAKE BARRINGTON IL 60010 | Lake | 2026-11-17 |
Create a free account to open this list in the research view.
How Illinois sells tax delinquent property
The 18% is per six months, not per year, over the full redemption period the compounded return can approach the ~36%/yr figure investors quote.
Statutory terms last verified 2026-07-29; see the Illinois investing profile for the sources and the TaxLienSimple Index score.
Where Illinois counties publish the list
The office that publishes this notice is not the same in every state: it can be the treasurer, the tax collector, the clerk, the sheriff, the court, or the auction platform named on the county page. Before you rely on a row, check four things on the county's own page — the posted date, the sale date, whether the record is current or historical, and the official link you took it from. Our guide to finding and verifying a list walks through that check and how to keep the result as a watchlist: how to find and verify a tax sale list.
What this page does not show
Everything above is the sale itself: the date, the platform, the statutory terms and the county's own sources, free and without an account. What it does not show is the property-level detail, or the 409 other county and city sales tracked alongside this one.
- The 366 parcels published for Illinois. Opening bids, addresses and assessed values, with the official source on each row. This page shows a sample.
- The full sale calendar. 410 tracked county and city sales, filterable by date, state and sale type, instead of one page at a time.
- 330,375 parcels across 938 counties. Searchable nationwide, with a research score and the pre-bid warnings behind it.
A free account previews two counties and needs no card. Paid plans start with a 7-day trial for $1.99 and carry a 7-day money-back guarantee. TaxLienSimple is a research platform: we publish the records and the sources, we do not sell properties and we make no claim about what any certificate or parcel is worth.
Illinois tax delinquent property questions
Where can I find a list of tax delinquent properties for sale in Illinois?
Each Illinois county publishes its own list before the sale, usually on the treasurer, tax collector or revenue commissioner site or through its auction platform. TaxLienSimple collects those county lists into one place: 366 parcels across 3 counties right now, each linked to the county's official listing.
Can I buy a property with delinquent taxes in Illinois?
Illinois runs tax lien annual sale; forfeiture/scavenger sales. The 18% is per six months, not per year, over the full redemption period the compounded return can approach the ~36%/yr figure investors quote. Redemption: 2 to 2.5 years (2.5 yr for residential 1-6 units, 2 yr others; purchaser may extend to 3 yr). Investor return: up to 18% penalty per 6-month period (bid down), accruing every 6 months.
What is the lowest opening bid on the Illinois list?
The lowest opening bid on the current Illinois list is $35. Opening bids are the county's figure (taxes, interest and costs owed), not the property's value.
When is the next tax sale in Illinois?
The next tracked sale is Lake on 2026-11-17; 1 Illinois county has a sale date published.