Montana Tax Deed Sales: Redemption, Auctions, and Notice

Montana tax deed sales transfer ownership of real property after at least three years of unpaid property taxes, moving from a county tax lien, through a redemption window, and finally to either a public auction for residential property or a direct deed from the county treasurer for everything else. The process rewards patience and precision, and it punishes investors who cut corners on notice. For delinquent owners, it can mean losing the property, but Montana law requires any auction surplus above the amount owed to come back to the former titleholder.

How a Property Becomes Eligible

Property taxes in Montana are due in two installments: first half by 5:00 p.m. on November 30 (or within 30 days of the postmark on the tax notice, whichever is later), and second half by 5:00 p.m. on May 31. The moment a deadline passes, the unpaid amount is delinquent, draws interest at 5/6 of 1% per month, and triggers a 2% penalty on the balance.¹ That interest works out to roughly 10% annually and keeps compounding until the bill is paid.

The delinquent balance becomes a lien against the property that outranks nearly every other claim, including mortgages. Each year the county treasurer holds a tax lien sale. When no outside buyer takes a lien, the county is listed as the purchaser by default, and an investor can later take assignment by paying all delinquent taxes, penalties, interest, and costs that have accrued.² An investor planning to buy a lien at sale or take assignment must send the property owner a certified notice of intent at least two weeks beforehand. Once the assignment is complete, the treasurer issues a certificate, files it with the clerk and recorder, and notifies the owner. Every later tax bill flags that a lien exists.

The Three-Year Redemption Window

Montana gives the owner three years from the date the tax lien attaches to redeem by paying off the full delinquent balance plus accumulated penalties, interest, and costs.³ The deadline is the first working day in August of the third year. The owner, an occupant, the holder of an unrecorded interest, or any other interested party can redeem.

One narrow exception shortens the window to two years: subdivided residential or commercial lots with delinquent special improvement district assessments and no habitable dwelling or commercial structure on the land.³ For most occupied residential and commercial property, three years applies.

Two Tracks: Residential Auction vs. Direct Deed

What happens after the redemption period depends entirely on property type, and this is the fork that most people miss when they hear “tax deed sale.”

Residential property goes to a public auction under Montana Code 15-18-219 and 15-18-220. The assignee files an application with the county treasurer, pays a $25 filing fee, and pays off any remaining assigned or unassigned liens, delinquent taxes with penalties and interest, and current taxes due.⁴ The treasurer then schedules a public auction in the county where the property sits, held within 60 days of receiving the application.⁵

Non-residential property follows the direct-deed track under Montana Code 15-18-211. Once notice requirements are satisfied, the treasurer grants a tax deed directly to the assignee without an auction. The fee is $25 plus the county’s actual notice costs, and the assignee records the deed with the clerk and recorder.⁶ Because there is no assessed-value floor, non-residential property can effectively be acquired for the cost of the delinquent taxes and fees. That makes the two tracks very different investment propositions.

What the Opening Bid at a Residential Auction Actually Includes

The opening bid at a residential tax deed auction is higher than most first-time bidders expect. It bundles four pieces:

The full amount needed to redeem the lien: delinquent taxes, penalties, interest, and costs
Amounts the assignee paid at application, including any additional delinquent or current taxes under Montana Code 15-18-219
Deed fees and recording fees under Montana Code 15-18-211
An amount equal to half of the most recent assessed value of the land and dwelling, or half the value from an independent appraisal

That last piece is the one that catches people off guard.⁵ On a home assessed at $200,000, the opening bid starts with $100,000 for the assessed-value component alone, before adding back taxes and fees. The structure is designed to protect homeowner equity and discourage picking up occupied homes at fire-sale prices.

Bidding is open and competitive. The highest bidder wins and must pay in full within 24 hours of the sale, excluding weekends and legal holidays. Miss that window and the treasurer cancels the high bid and offers the property to the next-highest bidder at their bid price. If the assignee is the winning bidder, failure to pay auction costs and any unpaid portion of the opening bid within 24 hours cancels the assignment entirely.

Foreign entities cannot bid. The treasurer must have written proof that a bidder is a domestic entity before accepting its bid. And if no one bids at all, the treasurer cancels the assignment and files a notice of cancellation with the clerk and recorder. The assignee does not automatically get the property when the auction draws no bidders. The lien and the assignment simply go away.

Notice: The Step That Sinks Deals

Montana’s notice rules are detailed and unforgiving, and this is where tax deed attempts most often fall apart. Before applying, the assignee must obtain a litigation guarantee, a specialized title insurance product ordered through a licensed title insurance producer and approved by the insurance commissioner. The guarantee must identify every party of record with an interest or possible claim in the property, along with addresses.⁷ It is designed to produce the same list of parties who would need to be named in a quiet title lawsuit. The assignee must separately identify and notify the current occupant at the street address or other known address.

For residential property, notice goes out between May 1 and May 30 of the year the redemption period expires, warning all interested parties that a tax deed will be auctioned unless the lien is redeemed before the auction date.⁴ For non-residential property, similar notice goes out under Montana Code 15-18-212. In both cases, notice must be sent by certified mail with return receipt requested to the current occupant and every party (other than a utility) listed on the litigation guarantee, in the form prescribed by Montana Code 15-18-215. When certified mail comes back undelivered, the assignee must also publish notice under Montana Code 7-1-2121.⁸

Proof of notice, including certified mail receipts and any publication records, must be filed with the county clerk and recorder within 30 days of mailing or publishing. Once filed, that proof is prima facie evidence the notice was sufficient. Skip the filing and the consequences are severe: the treasurer cancels both the tax lien certificate and the assignment certificate, and the assignee loses every dollar put into acquiring the lien.⁴

What Former Owners Get Back

When a residential property sells at auction for more than the opening bid, the county treasurer must distribute the surplus to the former legal titleholder of record within 30 days of receiving payment from the buyer.⁹ The treasurer must process that payment whether or not the former owner still lives in Montana.

This return-of-surplus rule now has constitutional backing. In 2023, the U.S. Supreme Court held in Tyler v. Hennepin County that a local government violates the Takings Clause of the Fifth Amendment when it keeps a homeowner’s equity beyond the amount owed in delinquent taxes.¹⁰ A taxpayer who loses a $40,000 home to satisfy a $15,000 tax debt, the Court said, has already paid far more than owed. One important caveat for former owners: the surplus reflects the auction price, which is not always the property’s full market value.

Title Quality After the Deed

A Montana tax lien outranks subsequent mortgages, later purchasers, and judgment creditors.¹¹ When the deed transfers, most prior private encumbrances are wiped out, though certain government liens and utility easements may survive.

“Clean” is relative, though. Most title insurance companies will not insure a tax deed without a court order quieting title. Montana provides a dedicated procedure under Montana Code 15-18-411: the purchaser files an action asking the court to confirm ownership and extinguish competing claims. Anyone claiming to be the “true owner” can be ordered to deposit with the court the full taxes, interest, penalties, and costs that would have accrued, or show cause why they should not pay. The court can waive the deposit for someone found to be indigent.¹²

Budget for this step before bidding. Attorney fees for an uncontested quiet title action typically run between $1,500 and $6,000, more if someone fights it. Without a quiet title judgment, reselling or financing the property is extremely difficult because no lender will accept an uninsurable title.

Former owners can challenge a tax deed, but the grounds are narrow: failure to comply with the mandatory notice requirements, taxes that were already paid before the sale, or property that was not legally subject to the lien in the first place. Any challenge has to overcome the prima facie validity of the filed proof of notice, which is why the notice rules above are written so tightly.

Bankruptcy as a Stopper

A property owner who files for bankruptcy triggers an automatic stay under 11 U.S.C. § 362 that halts most collection actions, including acts to enforce liens against the debtor’s property.¹³ If an owner files a Chapter 7 or Chapter 13 case while a tax deed application is pending, the assignee generally cannot proceed with the auction or deed transfer until the bankruptcy court lifts the stay or closes the case.

Under a Chapter 13 plan, the owner may be able to repay delinquent taxes over as long as five years while keeping the property. The automatic stay does not stop new property tax liens from attaching for taxes that come due after the bankruptcy filing, but it does buy time to catch up on the older debt. Assignees who run into a bankruptcy filing should expect delays and the real possibility of losing their investment if the owner cures the arrearage through the repayment plan.

1
Montana Code Annotated. Montana Code 15-16-102 – Time for Payment – Penalty for Delinquency
2
Montana State Legislature. Montana Code 15-17-323 – Assignment of Rights – Form
3
Montana Code Annotated. Montana Code 15-18-111 – Time for Redemption – Interested Party
4
Montana State Legislature. Montana Code 15-18-219 – Application for Tax Deed for Residential Property – Fee – Notice
5
Montana Code Annotated. Montana Code 15-18-220 – Sale at Public Auction – Notice of Auction
6
Montana Code Annotated. Montana Code 15-18-211 – Tax Deed – Fee
7
Montana State Legislature. Montana Code 15-18-212 – Notice – Proof of Notice – Penalty for Failure to Notify
8
Montana Code Annotated. Montana Code 7-1-2121 – Publication and Content of Notice – Proof of Publication
9
Montana Code Annotated. Montana Code 15-18-221 – Distribution of Tax Deed Auction Proceeds
10
Justia. Tyler v. Hennepin County, 598 U.S. ___ (2023)
11
Montana State Legislature. Montana Code 72-16-1005 – Tax Lien
12
Montana State Legislature. Montana Code 15-18-411 – Action to Quiet Title to Tax Deed – Notice
13
Office of the Law Revision Counsel. 11 USC 362 – Automatic Stay