Platte County tax sales, Missouri

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Platte County sells indoors: the Collector's published sale information puts the delinquent tax certificate sale in the County Commission room on the second floor of the Platte County Administration Building, annually on the fourth Monday in August at 10:00 a.m. Collector Sheila L. Palmer conducts the sale, bidding begins for the amount of taxes, penalties and fees, and the list of properties is published in a local newspaper for three consecutive weeks and posted online. One restriction in the Collector's published terms is worth noting before you plan around a purchase: certificates of purchase cannot be assigned to non-residents or delinquent taxpayers.

Selling office: Sheila L. Palmer, Platte County Collector of Revenue, Administration Building, 415 Third St., Platte City

Next sale: Monday, August 23, 2027 (2026 sale Monday, August 24, 2026). The Collector published sale information sets the standing pattern: the fourth Monday in August, 10:00 a.m., County Commission room, Platte County Administration Building.

Platte County's assignment restriction shapes the exit before you bid: a certificate here cannot be assigned to a non-resident or a delinquent taxpayer.

Dates and deadlines

Next sale	Monday, August 23, 2027, 10:00 a.m., County Commission room, Administration Building, Platte City
The list	Published in a local newspaper for three consecutive weeks prior to the sale, and posted online (Collector published sale information).
The sale	Annual, on the fourth Monday in August commencing at 10:00 a.m., in the County Commission room on the second floor of the Platte County Administration Building. The Collector conducts the sale.
Registration	Registration terms beyond the statutory affidavit are not stated in the Collector published sale information read.
Payment	Bidding begins for the amount of taxes, penalties and fees. County payment forms are not stated in the published sale information read; confirm with the Collector (816-858-3356) before the sale.
Redemption	One year absolute, and defeasible until the deed, for first and second offerings (s. 140.340). Ninety days for third offerings (s. 140.250), and none for post-third purchases, where the deed issues immediately. Any amount bid above the taxes, interest and costs is surplus for the former owner (s. 140.230) and earns the purchaser nothing.
Unsold parcels	Unsold parcels climb the offering ladder on the state frame: second offering the next year, third offering with a ninety day redemption, then post-third offers with an immediate deed.
Format	In person certificate sale, Administration Building, Platte City.
Selling office	Platte County Collector of Revenue (Sheila L. Palmer)

Sources: Platte County Collector of Revenue, Delinquent Tax Certificate Sale (plattecountycollector.com). Confirm with the selling office before relying on any date on this page: sales move, terms change, and parcels are pulled up to sale day.

Research Platte County parcels before you bid

A sale list gives you the parcels, the date, and the opening terms. It does not give you the owner, the value, or the rest of the picture: liens, foreclosure status, and parcel history. PropertyRadar is the data platform for that layer. It carries owner records, assessed and market values, foreclosure and tax data, and property history for parcels across Platte County, searchable by address, owner, or county, including parcels that never reach a sale list.

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How Missouri tax sales work

One August Monday runs most of the state. Under s. 140.150 the collector's sale falls on the fourth Monday in August. The delinquent list is published three consecutive weeks, and the sale is held in or adjacent to the county courthouse commencing at 10:00 AM, or by electronic media where the collector chooses (s. 140.170). Two jurisdictions in this set, St. Louis City and Jackson County, run court foreclosures instead and carry their own process on their pages.
The winner is whoever pays the required sum, and eligibility is policed. Under s. 140.190 the purchaser is the bidder who pays the taxes, interest and charges due. A buyer delinquent on other property must sign the non-delinquency affidavit, and a nonresident may not bid without filing a written consent to circuit court jurisdiction and appointing a citizen of the county as agent.
The certificate caps at ten percent, and the surplus is not yours. The certificate of purchase states an interest rate not to exceed ten percent per annum (s. 140.290). Anything bid above taxes and costs is surplus, held by the county treasury for the former owner (s. 140.230), and it earns the purchaser no interest at all under s. 140.340.
Redemption runs a year, and stays defeasible until the deed. Under s. 140.340 the owner, a lienholder or an occupant holds an absolute right to redeem for one year and a defeasible right until the purchaser actually acquires the deed. Redemption pays the purchase money, sale costs, title search and notice costs, interest at the certificate rate on the tax amount, and eight percent per annum on subsequent taxes the purchaser paid.
The deed is earned on paperwork, and missed paperwork is fatal. Under s. 140.405 the purchaser must run a title search and notify the record owner and every publicly recorded claim holder, by first class and certified mail, at least ninety days before taking the deed, then file the affidavit; failure to comply loses the purchaser's interest entirely. The collector's deed then vests fee simple (s. 140.420).
Unsold parcels climb a ladder, then leave the calendar. No covering bid means a second offering next year (s. 140.240) and a third offering the year after, the third carrying a ninety day redemption (s. 140.250). After the third offering the collector offers unsold parcels once every thirty days, and post-third purchasers take a deed immediately with no redemption; counties and cities may also hold parcels through a trustee under s. 140.260.

How bidding works in Platte County

Bidding begins at the amount of taxes, penalties and fees, and the statutory eligibility rules apply, including the non-delinquency affidavit. The Collector published terms bar assignment of certificates to non-residents or delinquent taxpayers, which narrows the resale market for a certificate bought here.

Bid the tax amount, not the parcel, at first and second offerings. Interest runs at no more than ten percent and only on the taxes and costs; every dollar of overbid becomes surplus that earns nothing and waits on redemption to come back. On a contested parcel the disciplined Missouri bid stops where the certificate stops paying.
The ladder rewards patience. The same parcel returns as a second offering, then a third offering with a ninety day redemption, then in the post-third cycle with no redemption at all. A buyer who wants the property rather than the yield often does best at the bottom of the ladder, and the counties in this set run those later channels very differently, from Boone County's sealed bid post-third sales to Jefferson County's trustee.

Terms: what a bid actually costs

Deposit, Platte County	No deposit is stated in the Collector published sale information read.
Payment, Platte County	Bidding begins for the amount of taxes, penalties and fees (Collector published sale information). Accepted payment forms are not stated there; confirm with the Collector before the sale.
What is sold	At a first or second offering, a certificate of purchase: a lien position, not the property and not a deed. The purchaser's road to ownership runs through the redemption period and the s. 140.405 notice process. At a post-third offering, what is sold is effectively the deed itself, issued immediately with no redemption.
The interest rate	The certificate states an interest rate not to exceed ten percent per annum (s. 140.290). The rate attaches to the delinquent taxes and sale costs. Nothing above that amount earns anything: the surplus belongs to the former owner.
The surplus	Any amount bid above the taxes, interest and costs is surplus, deposited in the county treasury for the former owner under s. 140.230, and noted separately on the certificate. On redemption it goes back through the county process; it is never yield, and pricing a contested parcel as if the overbid earned ten percent is the standard Missouri beginner's error.
Redemption money	The purchase money, the costs of sale, the purchaser's title search and notification costs, and interest at the certificate rate (capped at ten percent) on the tax amount, plus subsequent taxes the purchaser paid at eight percent per annum (s. 140.340). No interest is owed on any excess above delinquent taxes plus sale costs.
Redemption periods	One year absolute, and defeasible until the deed issues, for first and second offerings (s. 140.340). Ninety days for third offerings (ss. 140.250, 140.405). None at all for post-third purchases, where the deed issues immediately.
The deed path	Title search report from a licensed attorney or title company; notice of the right to redeem to the record owner and every publicly recorded claim holder at least ninety days before the deed, by first class and certified mail return receipt requested; affidavit at the end of the redemption period (s. 140.405). Counties apply an eighteen month outer limit from the certificate: miss the process and the purchaser's interest is lost.

Unsold parcels: the offering ladder

Parcels that draw no covering bid climb the statutory ladder: a second offering at the next year's sale (s. 140.240), a third offering the year after with a ninety day redemption (s. 140.250), and after the third offering, post-third offers in which the purchaser takes a deed immediately with no redemption. Counties and cities may also hold parcels through a trustee under s. 140.260. No standing Platte County post-third list is published in the sources read.

Before you bid

Model the surplus at zero percent. Run every first or second offering bid with the overbid earning nothing and returning only on redemption. If the deal only works with yield on the full bid, it does not work in Missouri.
Calendar the deed process the day you buy the certificate. The s. 140.405 title search and ninety day notice, inside the eighteen month outer limit counties apply, are where Missouri certificates go to die. The buyer who diaries the process owns the deed path; the buyer who does not loses the interest entirely.
Read the county's channel before the state's frame. Eight counties in this set run ch. 140 sales, but no two run them identically: sealed bids in St. Louis County, GovEase in Clay County, courthouse steps elsewhere, and two jurisdictions, St. Louis City and Jackson County, run court foreclosures with no certificate at all.
Set the maximum before the sale opens. The free Max-Bid Calculator below works backwards from your exit value to the highest bid you can pay, with the costs shown.

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New York tax sales · Florida tax deed sales · Texas tax sales · Pennsylvania tax sales · Georgia tax sales · North Carolina tax foreclosure sales · Ohio tax foreclosure sales · Illinois tax lien sales · Michigan tax foreclosure sales · Arizona tax lien sales · California tax defaulted property sales · Colorado tax lien sales · South Carolina tax sales · Indiana tax lien sales · Tennessee delinquent tax sales · Wisconsin tax deed sales