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Tax Sale Atlas

Sully County, SD tax sales

How tax lien and tax deed sales work in Sully County, seat of Onida: sale calendar, auction platform, over-the-counter lists, and the offices that run each sale.

New to tax sales? Read how South Dakota tax sales work or look terms up in the glossary.

Next sale
There is no fixed annual date.
Format
In person
Registration
Set county by county.
County office
(605) 258-2444
Every displayed fact carries a source badge. Verified Aug 31, 2026 against official county and state pages.How we verify
On this page

How Sully County sells delinquent taxes

Tax certificate sale (lien)

In person
Run by
Sully County Treasurer
Frequency
annual
Typical timing
Third Monday in December, 9am to 4pm, at the Sully County Courthouse in Onida.
Registration
Sully County publishes no bidder registration form and no online sign-up.
Next expected
on the third Monday in December, 2026 (window; exact date posts closer to the sale)
Sale list
South Dakota Public Notices search, Sully County filter
When it runs
Third Monday in December, 9am to 4pm, at the Sully County Courthouse in Onida. The date is fixed statewide by SDCL 10-23-7 and is the same in every South Dakota county. The Treasurer's office states that real estate taxes are due January 1, that the first half becomes delinquent May 1 and the second half November 1, and that "If real estate taxes are not paid by December 1, these taxes will be advertised."
Registration and deposit

Sully County publishes no bidder registration form and no online sign-up. Reach the Treasurer at (605) 258-2444 or at the courthouse during office hours, Monday through Friday 7:30am to 11:30am and 12:30pm to 4:30pm, to confirm registration, accepted payment, and whether certificates will be offered to outside bidders at all.

Sale format and venue
The Sully County Treasurer runs the December certificate sale, issues the certificate, and later issues the tax deed; the Register of Deeds records it. Bidding runs down from the ten percent annual cap in SDCL 10-23-8, which sets no lower limit, so a winning bid can reach zero percent and there is no guaranteed minimum return. There is no online auction platform. Settle one question before planning a trip: SDCL 10-23-28.1 bars a South Dakota county from selling any tax certificate unless its board of commissioners has adopted a resolution waiving that prohibition, and Sully County does not publish whether it has adopted one. Where no waiver is in place the Treasurer still advertises the delinquent list and still holds the December sale, then bids every certificate off in the county's own name under SDCL 10-23-24, and no investor buys anything. Sully County commission records show that pattern in practice: the commission accepts Treasurer's tax deeds taken in the county's own name, then declares those parcels surplus and sells them at public auction in the Commissioners Room of the courthouse at a published minimum bid. Three Sully Lake lots in Clifton Township were sold that way in 2024, with minimum bids of $232.57, $243.01 and $310.74. Ask the Treasurer directly whether the board has waived. Note also that SDCL 10-25-39.2 requires anyone other than a county who takes a tax deed to offer the property at public auction within one year and pay the surplus to the former owner, so a South Dakota certificate is a route to being repaid with interest rather than to keeping land cheaply. In person at the Sully County Courthouse, Onida
Source: Sully County Treasurer, Property Tax and Office Contacts· Verified Aug 31, 2026

Tax deed sale

Run by
County Treasurer issues the deed; the county then sells the property under SDCL chapter 6-13, commonly through the county auditor
Frequency
as needed
Typical timing
There is no fixed annual date.
Registration
Set county by county.
When it runs
There is no fixed annual date. A tax deed sale happens parcel by parcel once a tax deed has issued. The certificate holder, which in most counties is the county itself, may begin the deed process no sooner than three years and no later than six years after the certificate sale by serving a notice of intention to take a tax deed. Sixty days after the affidavit of completed service is filed with the treasurer, redemption ends and the treasurer prepares the deed. SDCL 10-25-39.1 then requires the county to declare the property surplus and sell it within one year, with notice published at least twice and the first publication at least thirty days before the sale. Watch the county auditor and the county's legal notices for those publications.
Registration and deposit

Set county by county. SDCL chapter 6-13 lets the county take sealed bids opened at a commission meeting, sell at public auction to the highest bidder, or list the property with one or more licensed real estate brokers, and it prescribes no bidder registration. Sealed bids are filed with the county's fiscal officer and opened at the time named in the published notice. The board may reject every bid, but if it accepts one it must be the highest. A county may refuse a bid from any person who is not current on all property taxes due within that county. No deposit is required on a cash sale; a buyer taking an installment contract deposits the cash portion as soon as the bid is accepted, and gets it back if the board declines to approve the sale. Confirm the bid form, the deadline and the payment terms with the county auditor.

Sale format and venue
This is the sale most South Dakota bidders can actually take part in, and it is a sale of the property itself rather than of a lien. Costs of taking the deed and of the sale come out of the proceeds first, the remainder is prorated to the taxing districts until all tax and interest is paid, and any surplus goes back to the prior owner of record, or to the Unclaimed Property Division if that owner cannot be found within one hundred eighty days. A private certificate holder who takes a tax deed is under the same duty: SDCL 10-25-39.2 requires that holder to offer the property at public auction within one year and entitles the holder only to what a redemption would have paid. Title vests in fee simple but remains subject to any claim the state or county has for taxes, liens or encumbrances and to past-due installments of municipal special assessments, and counties commonly convey by quitclaim deed and expect the buyer to bring a quiet title action. The former owner has one hundred eighty days after the deed is recorded to sue to recover possession or to avoid the deed.
Source: S.D. Codified Laws 10-25-39.1 - County acquisition of real property; sale of property; notice of sale requiredSDCL 10-25-39.1· Verified Aug 27, 2026

Sully County tax sale list and auction calendar

For Sully County tax sale 2026 searches, use the county-run sources below rather than a copied parcel list, and confirm the parcel, registration cutoff, deposit, and payment deadline against the county before you bid. If the parcels on this list are vacant land rather than houses, what buying land at a tax sale hands you is the place to start.

  1. Get the advertised list

    Use South Dakota Public Notices search, Sully County filter for the current advertised parcels, then recheck it before the auction.

  2. Register to bid

    Set county by county. Full requirements are in the sale card above.

  3. Sale day

    There is no fixed annual date. The sale is live and in person; there is no online bidding platform. Confirm the venue and hour with the county office before you go.

  4. Confirm with the office

    If the list, platform, and notice disagree, use County Treasurer issues the deed; the county then sells the property under SDCL chapter 6-13, commonly through the county auditor as the source to confirm which parcels are actually offered.

Before you bid in Sully County

  1. Start with the live sale list

    Pull the current advertised parcels from South Dakota Public Notices search, Sully County filter. Lists can change before the sale, so recheck the county source before you price a parcel.

  2. Confirm registration and deposit

    Set county by county. SDCL chapter 6-13 lets the county take sealed bids opened at a commission meeting, sell at public auction to the highest bidder, or list the property with one or more licensed real estate brokers, and it prescribes no bidder registration. Sealed bids are filed with the county's fiscal officer and opened at the time named in the published notice. The board may reject every bid, but if it accepts one it must be the highest. A county may refuse a bid from any person who is not current on all property taxes due within that county. No deposit is required on a cash sale; a buyer taking an installment contract deposits the cash portion as soon as the bid is accepted, and gets it back if the board declines to approve the sale. Confirm the bid form, the deadline and the payment terms with the county auditor.

  3. Check the state rules that change the bid

    Read the South Dakota due-diligence checklist before bidding. Redemption, liens that survive a tax deed, title cleanup, and payment deadlines can change what a parcel is worth. Which liens survive is state law, so read what survives a tax deed in South Dakota before you price the title work.

  4. Set a walk-away number

    Work out what the parcel is actually worth with the rural land value estimator, then turn it into a ceiling with the tax deed max-bid calculator.

Over-the-counter (leftover) purchases

Three routes exist and each runs through a county office. A certificate that stayed unsold for want of bidders must be sold at private sale at the treasurer's office to any person who pays the taxes, penalty and costs due. A person may also buy the county's interest in a certificate the treasurer bid off, by paying the taxes, penalty, interest and costs of sale and transfer plus every unpaid and subsequent tax, after which the treasurer assigns the certificate and the buyer holds the rights of an original purchaser. Both routes are closed in a county whose commissioners have not waived SDCL 10-23-28.1. Separately, tax deed property the county offered that drew no bid may be sold at private sale within twelve months for not less than ninety percent of the appraised value, without further publication or appraisal. Ask the county treasurer about certificates and the county auditor about unsold deeded parcels.

New to this path? Read how over-the-counter certificates work. Every state has its own name for what goes unsold, so check what South Dakota calls its leftover tax-sale inventory.

Use the arrow keys to switch between these sections.

County offices

Tax Collector (runs the certificate sale)

Sully County Treasurer

(605) 258-2444

700 Ash Ave, PO Box 265, Onida, SD 57564

Official website

County notes

  • The Sully County Treasurer holds the tax certificate sale at the courthouse in Onida on the third Monday in December, 9am to 4pm. The date is statutory and identical in every South Dakota county, so a calendar entry alone does not tell you the sale is open to investors.
  • Under SDCL 10-23-28.1 a county may not sell a tax certificate to an investor unless its commissioners have adopted a resolution waiving that prohibition. Sully County does not publish whether it has, so call the Treasurer at (605) 258-2444 before the third Monday in December and ask whether the county has waived.
  • Sully County commission records show the Treasurer taking tax deeds in the county's own name, after which the commission declares the parcels surplus and sells them at public auction in the Commissioners Room of the courthouse at a set minimum bid. That is the route by which land in this county actually reaches buyers.
  • Delinquent real estate taxes are advertised after December 1. The county's designated official newspaper is the Onida Watchman, and South Dakota legal notices are searchable by county at sdpublicnotices.com.
  • The Sully County Courthouse is open Monday through Friday, 7:30am to 11:30am and 12:30pm to 4:30pm, and closes for lunch in between. The Register of Deeds is reachable at (605) 258-2331 for recorded title work.

South Dakota rules

Max interest rate
10% per year, bid down at auction
Minimum return
No statutory minimum; interest accrues at your bid rate
Redemption
There is no fixed redemption deadline that starts at the sale. SDCL 10-24-1 lets any person redeem at any time before a tax deed is issued. What sets the outer limit is the deed process: SDCL 10-25-1 bars the certificate holder from starting that process until three years after the certificate sale, and SDCL 10-25-8 keeps the right to redeem alive until sixty days after the affidavit of completed service of the notice of intention is filed with the treasurer. Missing that sixty-day window passes the owner's, mortgagee's and lienholder's interests to the certificate holder. After the deed is recorded, the former owner has one hundred eighty days to bring an action to recover possession or to avoid the deed, which is a limitation period rather than a further right to redeem.
Deed deposit
Chapter 6-13 sets no deposit for a cash sale. A buyer taking an installment contract must deposit the cash portion with the fiscal officer as soon as the bid is accepted, and the board can still decline to approve the sale, in which case the deposit is returned. A separate rule bars a bidder from the sale entirely: under SDCL 10-25-45 a county may refuse a bid from any person who is not current on all property taxes due within that county. Payment methods and any county-set deposit are county practice rather than statute, so confirm them with the county before bidding.
Surplus proceeds
The county first deducts the expenses of taking the tax deed and of the sale. What remains is prorated to the taxing districts on the levies for the most recent year included in the proceeds until all tax and interest is paid. Any surplus left after taxes, penalty, interest, county liens and other costs must be returned to the prior owner of record, and if that owner cannot be found within one hundred eighty days the surplus is transferred to the Unclaimed Property Division under SDCL chapter 43-41B. The same distribution binds a private buyer. SDCL 10-25-39.2, effective February 12, 2024, requires any person other than a county who acquires property by tax deed after being issued a tax certificate to offer that property at public auction under chapter 6-13 within one year of the deed, and entitles that seller only to compensation in the same manner as a redemption under SDCL 10-24-1. A South Dakota certificate is therefore a route to being paid what the certificate is worth, not a route to keeping the land.
Governing statute
SDCL Title 10, Chapter 10-23

A tax deed does not convey marketable title. Most buyers file a quiet title action before they can resell or insure the property. See the due diligence guide.

See the full South Dakotarules and every county →

Frequently asked questions

Does Sully County, South Dakota sell tax liens or tax deeds?

Sully County follows South Dakota's tax lien state system.

When is the Sully County tax certificate sale?

Third Monday in December, 9am to 4pm, at the Sully County Courthouse in Onida. The date is fixed statewide by SDCL 10-23-7 and is the same in every South Dakota county. The Treasurer's office states that real estate taxes are due January 1, that the first half becomes delinquent May 1 and the second half November 1, and that "If real estate taxes are not paid by December 1, these taxes will be advertised." The sale is held in person. Always confirm the exact date with the County Treasurer before the sale.

How often does Sully County hold tax deed sales?

Sully County holds its tax deed sale as needed. There is no fixed annual date. Each sale is scheduled and advertised in advance, so check the county's tax deed calendar for the next posted date.

I own a property in this sale. Can I stop it?

Often yes, by paying the overdue taxes, interest, and costs before the deadline. South Dakota's redemption rule: Open until a tax deed issues; a deed cannot be sought until 3 years after the certificate sale, and redemption then runs until 60 days after completed service of the notice of intention. Call the County Treasurer issues the deed; the county then sells the property under SDCL chapter 6-13, commonly through the county auditor as early as possible for your exact payoff and options; deadlines are strict. Free help: lawhelp.org lists legal aid programs, and consumerfinance.gov lists HUD-approved housing counselors.

Where can I find the Sully County tax sale list?

Sully County posts its tax sale list at sdpublicnotices.com. Lists go up ahead of each sale and keep changing until the sale date, so confirm every parcel against the county's legal advertisement before you bid.

Verified Aug 31, 2026 against official county and state sources.

Tax Sale Atlas publishes educational information about public tax sale processes. This is not legal, financial, or investment advice. Rules, dates, and fees change; confirm with the county office before you bid.

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