Tax Sales in Missouri & Illinois: The St. Louis Investor's Guide

Everything a small to mid sized investor needs to know about buying tax delinquent real estate on both sides of the river .. where the sales are, when they happen, what you are actually buying, and what it takes to end up with title you can insure, borrow against and resell.

Last reviewed 08-19-2026. Missouri statutes reflect amendments effective 08-28-2026. Illinois statutes reflect Public Act 104-0553, effective 07-10-2026.

1. The big picture: two states, two systems

The St. Louis MSA straddles a state line, which means an investor working this market has to be fluent in two unrelated bodies of law. Here is the fastest way to hold them in your head.

2. Missouri Chapter 140 (Jones-Munger)

Chapter 140 is the default statute in Missouri and it governs St. Louis County, St. Charles, Jefferson, Franklin, Lincoln, Warren and essentially every Missouri county in this market except the City of St. Louis. It has been on the books since 1933 and the bones of it have not changed. What has changed, repeatedly, is the notice you have to give before you can take a deed. Those amendments came in 1998, 2003, 2010, 2013, 2015, 2024 and again effective 08-28-2026.

How a parcel gets to the sale

• Real estate taxes go delinquent on January 1. The county clerk enters the parcel in the back tax book, which the statute treats as a levy on the land (RSMo 140.150.3).
• In practice, metro Missouri collectors offer a parcel once it is three or more years delinquent. That is the published standard in St. Louis County and Jefferson County. It is a policy threshold, not a statutory one, so confirm with the collector in smaller counties.
• Before the sale the collector mails notice to the record owner, first by regular mail and then by certified mail if the assessed valuation exceeds $1,000 (RSMo 140.150.2).
• The delinquent list is published in a newspaper of general circulation for three consecutive weeks, one insertion weekly, with the final insertion at least 15 days before the fourth Monday in August (RSMo 140.170). The published list has to show the record owner and the taxes, penalty, interest and cost for each year separately.
• The owner can pay any time up to the moment of sale and pull the parcel off the list. A large share of the published list never actually gets sold. Do not fall in love with a parcel from the June list.

The sale itself

The statute says the collector opens the sale on the fourth Monday in August and continues day to day until every parcel has been offered. RSMo 140.170 lets the collector run it "at the time of sale in or adjacent to the courthouse" or through electronic media at the collector's discretion, which is why you now see three completely different formats in this metro:

• Sealed bid. St. Louis County has moved to sealed bid only. You register in advance, get a bidder number, and drop a sealed envelope with payment enclosed. Bids are not opened until the deadline passes.
• Live outcry auction. St. Charles County still runs a live sale with paddles in a room at the Administration Building. Jefferson County runs live as well.
• Online. A growing number of Missouri counties, including Clay County in the Kansas City market, run the sale on platforms such as GovEase.

Who is allowed to bid

RSMo 140.190.2 is stricter than most people expect, and collectors enforce it:

• You must be a Missouri resident. A nonresident individual or a foreign corporation or entity can still bid, but only after filing a written consent to the jurisdiction of Missouri courts and appointing a citizen of that county as agent for service of process. That appointment stays on file with the collector and binds successors.
• You must sign an affidavit that you are not delinquent on any other property taxes. A false affidavit can invalidate the sale.
• Land bank board members, land bank employees, and officials or employees of the political subdivision cannot bid, and neither can their relatives within the second degree.
• Registration is typically notarized and has to be filed before the sale. St. Louis County wants the notarized form plus a copy of current photo ID; St. Charles County notarizes it in the Collector's office for free.
• Some home rule cities add a housing code violation screen. St. Louis City bars bidders who own property with code violations.

3. First, second, third and post-third offerings

This is the part everybody asks about and the part most seminars get wrong. A Missouri parcel moves through a sequence of offerings across successive Augusts. Each rung down the ladder is a cheaper entry and a shorter redemption, and each one carries a different notice burden.

A note on "no minimum bid" at third offering

Because a third offering sells to the highest bidder regardless of the tax amount, people assume the taxes go away. They do not. Before the collector will execute the deed, you have to pay all subsequent taxes and special assessments that accrued after your purchase, plus recording fees. A $400 third offering purchase on a parcel carrying $9,000 of subsequent taxes is a $9,400 purchase. Read the offering list carefully, then pull the current tax bill.

4. The Missouri redemption math

Most Missouri certificates get redeemed. That is not a failure, it is the base case, and if you understand the arithmetic you can decide in advance whether you would rather be paid off or take the property.

What the redeeming party has to pay you

• The full amount you bid, as recorded on the certificate of purchase.
• Interest of up to 10 percent per annum on the taxes, penalty, interest and costs portion (RSMo 140.290 and 140.340). The rate is stated on the face of the certificate.
• 8 percent per annum on any subsequent taxes you paid to protect the certificate.
• Your recoverable costs: the title search, postage, the fee to record the certificate of purchase and to record its release, and the costs of the sale. You have to submit actual receipts to get reimbursed.
• No interest on the surplus. If you bid $12,000 on a parcel where $3,000 was owed, the $9,000 excess earns nothing. RSMo 140.340 is explicit: "no interest shall be owing on the excess amount."

What happens to the surplus if the property does not redeem

Under RSMo 140.230, the excess over the debt, taxes and costs goes to the county treasury. The treasurer holds it for the benefit of the people entitled to it, distributing first to former lienholders in order of lien priority, then to the former owner. No distribution happens until 90 days after the redemption period expires. Unclaimed funds escheat to the county school fund after three years. This is Missouri's answer to Tyler, and it means the surplus is not yours and never was.

5. The 90 day notice process (RSMo 140.405)

If you take one thing away from the Missouri half of this page, make it this section. More Missouri tax sale investments are destroyed by botched 140.405 notice than by bad property selection.

1. Order a title search report. It has to come from a licensed Missouri attorney or a licensed title company, and it must detail ownership and encumbrances. It is declared invalid if its effective date is more than 120 days before the date you apply for the collector's deed. Order it late enough to stay fresh, early enough to work the notice.
2. Identify every party entitled to notice. The owner of record, and every person holding a publicly recorded unreleased deed of trust, mortgage, lease, lien, judgment or any other publicly recorded claim. Not just the mortgage. Judgment creditors, mechanic's liens, municipal liens, IRS liens, HOA liens, easement holders with recorded interests.
3. Mail the notice at least 90 days before you are authorized to acquire the deed. Both first class mail and certified mail, return receipt requested, to each party's last known available address. Both. Not one or the other.
4. Handle the returns correctly. Notice is presumed received if the certified receipt comes back signed, or the first class notice is not returned, or the first class notice is marked refused by USPS, or any combination. But if the certified receipt comes back unsigned and the first class is returned undeliverable for any reason other than refusal, you must attempt additional notice and certify in your affidavit what you tried and how.
5. File the affidavit with the collector. Attach the valid title search report and, for every recipient: the first class notice, the certified notice, the addressed envelopes as they appeared immediately before mailing, the certified mail receipt as it appeared on return, and any returned regular mail envelopes.
6. Pay everything and take the deed. Once the affidavit shows the 90 day notice requirements are met, you are authorized to acquire the deed, but the collector cannot issue it before the redemption period in RSMo 140.340 has actually expired. You also have to pay all subsequent taxes and special assessments and the recording fee.

6. Missouri deadlines that kill deals

The 18 month deed deadline in RSMo 140.410 is the one that catches part time investors. You buy in August, the redemption year runs to the following August, and you now have six months to run notice, file the affidavit, pay subsequent taxes and get the deed recorded. It is enough time. It is not enough time if you start thinking about it in month sixteen.

7. What survives a Missouri tax sale

RSMo 140.420 says the collector's deed vests "an absolute estate in fee simple," subject to unpaid taxes whose lien was inferior to the tax lien that was sold, and it purports to foreclose the rights of the state, taxing authorities, judgment creditors and lienholders. That language reads better than it works.

Other interests to check for

• Federal tax liens. Under 26 U.S.C. 7425(d), when property is sold to satisfy a lien senior to the federal lien, the United States has a right to redeem within 120 days from the date of sale or the state redemption period, whichever is longer. If the IRS redeems, you get your money back but not the property. Notice to the IRS under 7425(c)(1) is what starts that clock properly.
• Sewer and municipal liens. A public sewer district lien for unpaid charges, once properly recorded, has priority above all liens except taxes levied for state and county purposes (RSMo 249.255). MSD balances in this metro can be substantial. Pull them.
• Special assessments. Neighborhood improvement districts, CIDs, TDDs and sidewalk or demolition assessments can ride along. RSMo 140.150 puts special assessments in the same delinquency bucket as taxes, and you owe the ones that accrue after your purchase.
• Municipal code liens and demolition liens. Common on north county and north city parcels. A parcel with a recorded demo lien for more than the house is worth is not a bargain at any price.
• HOA and condo assessments. Missouri gives condo associations a limited priority. Read the declaration.
• Bankruptcy. An automatic stay in place at the time of sale can void the sale.
• Occupants. RSMo 140.310 lets a purchaser take possession after one year from the sale unless redeemed, but occupants can hold over by paying rent or assigning enough to cover your bid plus interest, and you have to enforce that like any other landlord. A tenant in place is an eviction, not a lockout.

8. St. Louis City: a different statute entirely

The City of St. Louis does not run a Chapter 140 sale. It operates under the Municipal Land Reutilization Law, RSMo 92.700 to 92.920, with Chapter 141 in the background. This is a judicial process, and if you are used to county collector sales it will feel like a different sport.

1. The Collector files a suit. When a parcel goes delinquent it becomes subject to a tax suit. The Collector of Revenue files suits periodically through the year, numbered sequentially. Each suit is published in four consecutive weekly notices.
2. The sale follows roughly a year later. Sale dates are set annually and run every four to six weeks, generally May through October. Properties for a given sale are posted about two weeks in advance.
3. The Sheriff conducts the auction. Sales are held at the Sheriff's Office in the Civil Courts Building, 10 N. Tucker Blvd., 8th floor. You pre-register online for a bidder number and bring current state photo ID. Bidding opens at the amount of unpaid real estate taxes.
4. You cannot bid if you are delinquent or have code violations. The City screens both.
5. Payment is due at 2:00 p.m. the day of sale, and cash is no longer accepted. Two separate payments: the purchase price, and $150.00 by cashier's check or money order payable to the Sheriff to cover service by posting and recording the Sheriff's Deed (RSMo 92.840). Miss the 2:00 p.m. deadline and you go on the no-bidder list and are barred from future sheriff's sales.
6. You must get an appraisal and hold a confirmation hearing. Wait two weeks after payment, then schedule the confirmation hearing. You are responsible for hiring an appraiser, and the appraiser has to appear in court with you. You must provide the full legal description and notify the Sheriff's Office, Division 29, the Collector's attorney, the previous owner and all lienholders of the hearing date.
7. The judge decides whether your price was adequate. The court will not confirm a sale at a price substantially below appraised value. The judge can order an increased bid or set the sale aside. This is the built in surplus protection in a judicial system, and it is why City sales do not produce the $500 house you hear about.
8. Deed and occupancy. After the judge signs, the Sheriff prepares the Sheriff's Deed and files it with the Recorder of Deeds. You must apply for an occupancy permit from the City within 10 days after the confirmation hearing.

What happens to parcels nobody buys

They go to the Land Reutilization Authority. The LRA takes title to every tax delinquent City property not sold at the Sheriff's sale, plus donations. Founded in 1971, it is the oldest land bank in the United States and it holds thousands of parcels. See the next section.

9. LRA and land banks

For a lot of small investors, the land bank is a better front door than the auction. You are negotiating a purchase instead of bidding blind, you can inspect first, and you skip the redemption clock entirely.

10. Missouri metro county cheat sheet

Dates and formats change. Always confirm with the collector's office before you plan around anything here.

11. Illinois: bidding down the penalty

Cross the river and the whole mechanism inverts. In Illinois you are not bidding money. You are bidding the penalty rate the owner will owe you to redeem, and you bid it down.

1. The county gets a judgment. The collector applies to the circuit court for judgment and order of sale against delinquent parcels. Notice is published and mailed to owners and lienholders before judgment.
2. Registration. Register in writing, generally at least 10 working days before the sale, with a deposit. St. Clair County charges a $500 registration fee with an 10-16-2026 deadline for the 11-02-2026 sale. Madison County requires a $500 deposit plus a W-9, applied to purchases or refunded if you buy nothing, forfeited if you register and do not show.
3. You bid a penalty percentage. Bidding opens at 18 percent and goes down, in most counties in quarter point or half point increments, all the way to zero. The lowest penalty bid wins. Ties are broken by the auction system.
4. Most Illinois counties use R.A.M.S. 2. The Randomized Auction Management System, run by Joseph E. Meyer & Associates, is used in Madison County and most downstate counties. Tie bids are resolved randomly, which is a deliberate design choice to stop the biggest player from sweeping the sale.
5. You pay, and a certificate of purchase issues. Plus fees: an automation fee of up to $10 per parcel, an indemnity fund fee of up to $20 per item in counties under 3 million (35 ILCS 200/21-295), and now a surplus equity fee of up to $20 per item under 35 ILCS 200/21-296, with a like amount each year you pay subsequent taxes.
6. You pay the subsequent taxes. Not required, but if you do not, someone else buys the next year's lien ahead of you. Subsequent taxes you pay earn 12 percent per year on redemption.

12. Illinois redemption periods and penalty math

Illinois changed its redemption periods twice in three years. Which rule applies to your certificate depends on the date the certificate was issued, so read this table with your purchase date in hand.

How the penalty actually accrues

Under 35 ILCS 200/21-355 the penalty is not simple interest. It steps up in six month blocks, and each block multiplies your bid rate:

In counties of 3 million or more (Cook), certificates acquired after 01-01-2024 accrue at 0.75 percent per month instead of the block structure. On top of the penalty, the redeeming party owes your subsequent taxes with a 12 percent per year penalty, any forfeiture redemptions at 12 percent, plus title costs, publication costs and court and legal fees. The nonrefundable $80 fee per item in Cook is excluded from the redemption amount.

13. Illinois take notice, petition and the new judicial auction

The certificate does nothing for you by itself. Getting to a deed is a strict statutory sequence in circuit court, and Illinois courts enforce it precisely.

1. First take notice, within 4 months and 15 days after the sale. 35 ILCS 200/22-5. You deliver a completed TAKE NOTICE form, in at least 10 point type, to the county clerk. It must state the county, the date of sale or forfeiture, the certificate number, the tax years, the property address and legal description, and the statutory warning language. The clerk mails it by registered or certified mail within 10 days of receipt.
2. File the petition for tax deed. Filed in the circuit court of the county, generally not more than 6 months before the redemption period expires.
3. Second take notice, 3 to 6 months before the redemption period expires. 35 ILCS 200/22-10. This one goes to owners, occupants, the municipality (or the county if the parcel is outside a municipality), and all interested parties including any mortgagee of record. This is the notice that extinguishes the mortgage. Service is by sheriff or special process server, with publication as a backstop where diligent inquiry fails.
4. Prove up in court. Under 35 ILCS 200/22-40(a) you must show: the redemption period expired without redemption; all taxes and special assessments that came due after the sale are paid; all subsequent forfeitures and sales are paid or redeemed; the required notices were given and any police power advancements under 22-35 are paid; and that you complied with every provision entitling you to a deed.
5. The court enters an order. Under P.A. 104-0553 the order is normally an order authorizing a judicial tax deed auction, not a direct order for a deed to you. There is also a track for an order authorizing issuance of a tax deed to a county trustee.
6. The judicial tax deed auction, within 120 days of the order. 35 ILCS 200/22-40(g) and 22-42.
7. Get the deed recorded within one year after the redemption period expires. 35 ILCS 200/22-85. Miss it and the certificate, the deed and the underlying sale are absolutely void with no right to reimbursement. The clock stops only while a court injunction, court order, court refusal to act, or clerk refusal to execute prevents you.

14. Sale in error, indemnity fund, scavenger and trustee sales

Sale in error (35 ILCS 200/21-310)

Illinois has a genuine escape hatch that Missouri lacks. On the certificate holder's application, the court can declare a sale in error and the collector then promptly refunds the amount of the tax sale with interest and costs under 35 ILCS 200/21-315. Grounds under subsection (b) include:

• A bankruptcy petition under Chapter 7, 11, 12 or 13 filed after the tax sale and before the deed issues, if the case was open when the petition was filed.
• Improvements substantially destroyed after the sale and before the deed issues. This is your fire and tornado protection.
• An interest held by the United States that the tax deed could not extinguish.
• Hazardous substances or underground storage tanks requiring cleanup, if you did not have actual knowledge and you apply before the deed issues.
• Certificates issued before the 104th General Assembly's effective date whose redemption periods expired without a deed, redemption, vacatur or voiding.

Sale in error is one of the strongest arguments for Illinois over Missouri for a cautious investor. If the house burns down in month fourteen, Illinois gives you a statutory way out. Missouri does not.

Indemnity fund (35 ILCS 200/21-295 and 21-305)

The fee you pay funds a pot that compensates owners, not buyers. An owner who loses property to a tax deed and is barred from recovering it can petition for indemnity. For an owner who resided on property with four or fewer dwelling units on the last day of the redemption period, the equitable award is the fair cash value at the date the deed issued, less mortgages and liens, capped at $99,000. Payments are made only after a court judgment ordering a tax deed.

Scavenger sales

A scavenger sale offers parcels with three or more years of delinquency and, critically, the buyer is not required to pay the total delinquent taxes due. Bidding is in dollars, not penalty rate. Redemption penalties on a scavenger purchase are graduated, starting at 3 percent per month for the first two months and escalating to 48 percent after 24 months, plus 6 percent per year after that.

Scavenger sales used to be mandatory every two years. P.A. 103-0555 made them optional, at the direction of the county board. Do not assume your county will hold one. Ask.

Trustee sales

Parcels that draw no bid at the annual sale go to the county trustee, in most Illinois counties that is Joseph E. Meyer & Associates. After redemption runs, the trustee obtains tax deeds on behalf of the taxing districts and sells at public auction. Many counties also allow over the counter or sealed bid purchase of trustee held certificates between auctions. For a small investor this is often the cleanest entry: no penalty bidding war, no institutional competition, and the trustee has already carried the parcel through the notice process on many of them.

15. Illinois metro county cheat sheet

The Illinois portion of the St. Louis MSA includes St. Clair, Madison, Monroe, Clinton, Bond, Jersey, Macoupin and Calhoun counties. Dates move every year. Confirm with the treasurer.

16. Marketable title, insurable title and financing

This is the section that separates people who make money from people who own a folder of certificates. A deed is not title. Title you can borrow against and resell is a separate thing that you have to go get.

Missouri: the collector's deed is a starting point, not a finish line

St. Louis County prints the warning in its own sale notice: "Issuance of a collector's deed alone does not convey a clear title. The Collector makes no warranty, guarantee, or other affirmation as to the title to be transferred by any sale." Title insurance underwriters in Missouri, and nationally, will not authorize a policy on a collector's deed alone. The reason is due process: nobody can be sure from the face of the deed that every party with an interest received constitutionally adequate notice.

You have three practical routes to insurable title in Missouri:

The three year clock

RSMo 140.590 bars most suits to recover land sold for taxes, or to defeat or avoid the sale or conveyance, more than three years from the recording of the tax deed. The exceptions are where the taxes were actually paid, the land was not subject to taxation, or the property was properly redeemed. Infants and incapacitated persons get two years after the disability is removed. This is why some underwriters and some buyers treat the three year mark as meaningful even without a quiet title decree. It is not the same thing as insurability, and you should not plan a flip around it.

Illinois: the tax deed is designed to be insurable

This is the structural advantage of the Illinois system and the reason serious tax buyers work both states. Under 35 ILCS 200/22-45, a tax deed issued under 22-40 is incontestable except by direct appeal from the order directing issuance. Collateral relief under section 2-1401 is limited to four grounds:

• Proof the taxes were paid before the sale.
• Proof the property was exempt from taxation.
• Proof by clear and convincing evidence that the deed was procured by fraud or deception.
• Proof by a person holding a recorded ownership or other recorded interest that they were not named in the publication notice and the tax purchaser did not make diligent efforts to serve them.

There is also a narrow homestead carve out in counties over 3 million where a deed can be voided on petition filed within 3 months of the order if the property was owner occupied at the end of redemption and the deed resulted from county employee negligence or willful error.

Because the deed comes out of a judicial proceeding with a compliance finding on the record, Illinois tax deeds are routinely insured without a separate quiet title action. Underwriters will still want to see the full court file, proof of service on every interested party, and the recorded deed. If your service record is thin, expect the underwriter to require a quiet title anyway or to take exception.

Financing reality on both sides of the river

• No title policy, no institutional loan. Banks, credit unions, DSCR lenders and agency products all require a lender's title policy. A collector's deed with no quiet title will not clear underwriting.
• Hard money and private money can bridge the gap, sometimes. Some private lenders will lend against a Missouri tax title before quiet title, at reduced leverage and higher rate, if the borrower has a track record and the quiet title is already filed. Most will not. Assume you are buying with cash and refinancing after the decree.
• Cash out refinance is the exit that pays for all of it. If you are running a BRRRR on tax sale acquisitions, the quiet title timeline is part of your hold period. A 6 month rehab plus a 7 month quiet title is a 13 month capital cycle, not a 6 month one. Model it that way.
• Retail resale. A retail buyer's lender needs a policy too. You can sell a tax title by quitclaim to another investor at a discount, and plenty of people do, but you are selling your unresolved risk and the price reflects it.
• Title curative services. There are vendors that offer certification products as an alternative to a full quiet title on tax deeds. They work with specific underwriters and specific fact patterns. Get the underwriter's written commitment before you rely on it, not the vendor's brochure.

17. Every way to buy tax distressed property in this market

The annual auction is the most visible door and the most crowded one. There are at least a dozen ways in, and the good ones are usually the ones that do not involve standing in a room full of bidders.

18. Due diligence checklist before you bid

The parcel

• Drive it. Every single one. Photos from the street, and a walk around the block. A parcel number is not a property.
• Confirm it is a real, buildable, legally described parcel and not a 10 foot strip, an alley remnant, a landlocked interior lot, or a sliver created by a road widening.
• Check the assessor for the structure, year built, square footage and current assessed value. Compare to what the taxes suggest.
• Check zoning and, in the City, the neighborhood's building and occupancy requirements.
• Look for condemnation placards, board ups, and open code cases. In St. Louis City and inner ring municipalities, pull the address in the code enforcement system.
• Environmental: former gas stations, dry cleaners, auto shops, industrial adjacency. In Illinois, hazardous substances can support a sale in error. In Missouri, they are your problem.
• Occupancy. Is somebody living there? A tenant is an eviction. A hostile former owner is a much longer story.

The title

• Order or run a title search before the sale on anything you intend to bid seriously on. In Missouri you will need one anyway under 140.405.
• Identify every recorded lien: deeds of trust, mortgages, judgments, mechanic's liens, municipal liens, demolition liens, IRS liens, state tax liens, HOA liens, easements, leases.
• Check for a federal tax lien specifically and calendar the 120 day IRS redemption window.
• Check the sewer district (MSD in this metro) for a recorded lien or a large unpaid balance.
• Check for special assessments: NID, CID, TDD, sidewalk, sewer lateral.
• Check PACER or the local bankruptcy docket for the owner's name.
• Confirm the chain of title makes sense. Estates, trusts and dissolved entities complicate both the notice and the quiet title.

The numbers

• Total the delinquent taxes plus the subsequent taxes you will have to pay before the deed issues. That is your real cost, not the bid.
• Add recording fees, the certificate recording charge, the title search, certified mail costs, and the collector's fees.
• Add the quiet title budget if you are in Missouri.
• Add carrying cost for the full redemption period plus the notice period plus the quiet title period. In Missouri on a first offering that is realistically 18 to 24 months from bid to insurable title.
• Run the redemption yield scenario and the take-the-property scenario separately. Be honest about which one you are actually buying.

The paperwork

• Registration form completed and notarized, filed before the deadline.
• Non-delinquency affidavit signed. Make sure it is true, including on entities you control.
• If you are not a Missouri resident, the consent to jurisdiction and resident agent appointment on file with the collector.
• Certified funds in the right amounts, made out to the right payee. Some counties want separate checks for separate items.
• A calendar with every statutory deadline already entered, before you bid.

19. How investors actually lose money on these

1. Missing a notice deadline. The single most common total loss. 45 days on a Missouri third offering, 90 days before the deed, 4 months and 15 days for the Illinois first take notice. These are not soft deadlines.
2. Missing the 18 month Missouri deed deadline. Your lien evaporates and the collector cancels your certificate.
3. Missing the Illinois one year post-redemption deed deadline. 22-85 makes the certificate, the deed and the sale absolutely void with no right to reimbursement.
4. Assuming the mortgage is gone. In Missouri it very likely is not, unless your notice file is perfect. People discover this at the title company, after the rehab.
5. Overbidding on a parcel that redeems. The surplus earns zero. A big overbid on a first offering that redeems at month eleven is a bad money market account.
6. Forgetting subsequent taxes. They accrue while you wait, you have to pay them to get the deed, and in Illinois if you skip them somebody else buys the next lien ahead of you.
7. Buying a parcel that is not a parcel. Slivers, alleys, medians, unbuildable remnants and non-existent legal descriptions show up on every post-third and trustee list.
8. Buying a liability. A condemned structure with a demolition order transfers the demolition obligation to you. Environmental contamination transfers too, and in Missouri there is no sale in error to save you.
9. Underestimating the quiet title timeline. Investors budget the legal fee and forget the seven months of carrying cost and the fact that they cannot refinance during it.
10. Not reading the current statute. Missouri amended Chapter 140 in 2024 and again effective 08-28-2026. Illinois rewrote the endgame on 07-10-2026. Seminar material from three years ago is not just stale, it is wrong.

20. Frequently asked questions

Can I really buy a house for the back taxes?

Occasionally, on a Missouri third offering or post-third parcel, and the house will be a shell in a rough condition for a reason. On anything with real equity, the redemption right, the surplus rules and, in Illinois, the new judicial auction all exist specifically to prevent that outcome. Underwrite for a 10 percent return, not a 1,000 percent one, and treat the occasional home run as a bonus.

Do I get to go inside the property before I bid?

No. You are bidding on a parcel you have seen only from the street. Everything is sold as is, and in most counties all sales are final. This is the core risk and it is why the drive-by is not optional.

What is the difference between a tax lien and a tax deed state?

Missouri and Illinois are both lien-first states: you buy a certificate, not the property. Missouri converts to a deed administratively through the collector. Illinois converts through the circuit court. Neither hands you a deed on sale day, and the phrase "tax deed state" as used in seminars usually does not describe either one accurately.

Can I be a bidder if I live out of state?

In Missouri, only if you file a written consent to the jurisdiction of Missouri courts and appoint a citizen of that county as your agent for service of process, on file with the collector (RSMo 140.190). A foreign corporation or entity is treated as a nonresident. Illinois does not have the same residency restriction but does require registration and a deposit in advance.

How much interest will I actually earn?

In Missouri, up to 10 percent per annum on the tax portion of your bid plus 8 percent on subsequent taxes, with zero on any overbid surplus. In Illinois, whatever penalty rate you bid, multiplied by the number of six month blocks that elapse, plus 12 percent per year on subsequent taxes. Illinois can produce higher headline numbers, but the bid-down auction means the clean parcels clear at low single digits.

Do I have to hire a lawyer?

For the Missouri notice process, no, but a mistake costs you your entire investment, so most people who do this more than once use counsel or a service. For a Missouri quiet title suit and for the entire Illinois tax deed process, yes. Illinois in particular is a court proceeding from the take notice forward and is not a do it yourself project.

What happens to the money if the property sells for more than the taxes?

In Missouri the surplus goes to the county treasury, is distributed first to former lienholders by priority and then to the former owner, with nothing paid out until 90 days after redemption expires and a three year claim window (RSMo 140.230). In Illinois the judicial tax deed auction returns surplus to the former owner, and a separate Surplus Equity Fund, funded by fees on tax buyers, compensates owners in certain recent cases.

Can I evict the occupant after I buy?

Not immediately, and not without a deed and a court order. In Missouri, RSMo 140.310 allows possession after one year from the sale unless redeemed, but the occupant can hold over by paying rent or assigning enough to cover your bid plus interest. In Jackson County and in judicial sale counties, you need a writ of execution for possession. Budget for an eviction, a cash for keys negotiation, or both.

Is my Missouri collector's deed insurable after three years?

Not automatically. RSMo 140.590 bars most challenges after three years from recording, which reduces the risk, but that is a statute of limitations, not a title determination. Most underwriters still want a quiet title decree, or ten years of undisturbed record title, before they will issue a policy.

Which state is better for a small investor?

Different tradeoffs. Missouri gives you a shorter redemption period, a faster path to a deed, and a statutory yield you do not have to bid away, but the notice requirements are unforgiving, prior mortgages may survive, and you almost certainly need a quiet title suit. Illinois gives you a bid-down yield that institutions will compete away, a much longer redemption, and a court process, but the tax deed is designed to be insurable and the sale in error remedy gives you a real escape hatch. Investors who work this metro seriously do both, and pick per deal.