Tax delinquent properties for sale in Montana are listed by each county treasurer, usually on the treasurer’s website and always at the county office. Montana no longer runs public tax lien auctions. Instead, you identify an unpaid parcel on the county’s delinquent list and apply for an assignment of the county’s tax lien, paying the full delinquent amount plus penalties, interest, and fees directly to the treasurer.1Montana Code Annotated. Montana Code 15-17-125 – Attachment of Tax Lien and Preparation of Tax Lien Certificate
Where to Find the Delinquent Property List
Every county treasurer must publish notice of pending tax lien attachment on or before the last Monday in June. The published notice itself does not print every parcel; it tells the public that the complete list is available for inspection at the treasurer’s office.2Montana State Legislature. Montana Code 15-17-122 – Notice of Pending Attachment of Tax Lien The notice runs twice in a qualifying local newspaper with at least six days between publications.3Montana Code Annotated. Montana Code 7-1-2121 – Publication and Content of Notice — Proof of Publication
In practice, the easiest route is the treasurer’s website. Larger counties post downloadable lists. Yellowstone County publishes both Excel and web-viewable versions and refreshes the data around August 15 so investors can confirm which parcels are still unpaid before taking action.4Yellowstone County Montana. Treasurer Tax Liens Flathead, Gallatin, and Lewis and Clark counties maintain similar pages. Smaller counties without web postings rely on the newspaper notice and paper copies at the courthouse. In every case, calling or visiting the treasurer’s office works.
What the List Tells You
The statute requires the list to show the name and address of the person to whom the delinquent taxes are assessed, along with the delinquent tax amounts, accrued penalties, interest, and costs, plus a statement that more will continue to accrue.2Montana State Legislature. Montana Code 15-17-122 – Notice of Pending Attachment of Tax Lien Many county lists go further and include parcel numbers and legal descriptions, which the statute does not require but investors need.
Use the parcel number to pull the property up on the county’s GIS mapping system and confirm its location, size, and zoning. A title search before you commit any money is worth the expense. Existing mortgages, federal tax liens, and other encumbrances can survive the tax lien process, and finding them later is costly.
How the Montana System Works
Property taxes come due in two installments: first half by November 30, second half by May 31 of the following year. Anything unpaid past those dates becomes delinquent and starts accruing interest at 5/6 of 1% per month plus a flat 2% penalty.5Montana Code Annotated. Montana Code 15-16-102 – Time for Payment — Penalty for Delinquency If the taxes stay unpaid, the county treasurer attaches a formal tax lien to the property no later than the first working day in August.1Montana Code Annotated. Montana Code 15-17-125 – Attachment of Tax Lien and Preparation of Tax Lien Certificate
The county then holds that lien. The old competitive bidding system is gone. In its place, Montana lets a private party step in, pay the county what the delinquent owner owes, and take an assignment of the lien. You deal with the treasurer directly rather than bidding against a room of investors.
Getting an Assignment of the Tax Lien
Before you pay the county anything, you have to send the property owner written notice by certified mail. The statute prescribes the form of the notice: it identifies the property, names the owner, and warns that the tax lien may be assigned and the owner could lose the property. Timing is strict. The notice must go out at least two weeks before you pay, no earlier than August 15, and no more than 60 days before the purchase.6Montana Code Annotated. Montana Code 15-17-323 – Assignment of Rights — Form
After the waiting period, bring your proof of certified mailing to the treasurer and pay the full delinquent amount, including all accumulated penalties, interest, and costs. There is no partial payment. There is no discount. You pay what the owner owed. Most counties also charge an assignment fee per parcel.
When more than one investor wants the same lien, the treasurer follows a locally developed priority policy with input from the county attorney and clerk and recorder.6Montana Code Annotated. Montana Code 15-17-323 – Assignment of Rights — Form Some counties run a lottery, others go first-come. Call the specific county before you start sending notices.
What You Actually Buy
Once the treasurer verifies your notice and takes your payment, they prepare a tax lien certificate. It identifies the property, states the delinquency date, breaks down what you paid, and specifies when you become entitled to apply for a tax deed if the owner does not redeem. A copy is filed with the clerk and recorder, and another goes to the property owner.
The certificate does not make you the owner. It makes you the holder of a lien that may eventually ripen into ownership. Treat it as a financial instrument. The property owner can still pay off what they owe and keep their land.
The Redemption Window
Montana gives owners three years to redeem. The deadline is the first working day in August, three years after the tax lien was originally attached. During that period, the owner, an occupant, or any other interested party such as a mortgage holder can pay the full delinquent amount plus everything that has accrued since.7Montana Code Annotated. Montana Code 15-18-111 – Time for Redemption — Interested Party
A shorter two-year redemption applies to one narrow case: subdivided residential or commercial lots with delinquent special improvement district assessments and no habitable dwelling or commercial structure on them.7Montana Code Annotated. Montana Code 15-18-111 – Time for Redemption — Interested Party Everything else runs the full three years.
If the owner redeems, you get your money back plus statutory interest. Redemption is the common outcome, so plan on the interest earnings as your realistic return rather than acquisition of the property.
Moving to a Tax Deed
If no one redeems within the three-year window, you can apply for a tax deed. Between May 1 and May 30 of the year the redemption period expires, you must send certified mail notice with return receipt requested to the current occupant and to every party with a recorded interest in the property.8Montana Code Annotated. Montana Code 15-18-212 – Notice — Proof of Notice — Penalty for Failure to Notify The statute dictates the exact content of the notice, including bold-print warnings about losing the property.9Montana Code Annotated. Montana Code 15-18-215 – Form of Notice That Tax Deed May Issue
To build the notice list, you need a litigation guarantee from a licensed title insurance producer. The guarantee identifies every party of record with an interest in the property and is effectively the definitive list of who must be notified.8Montana Code Annotated. Montana Code 15-18-212 – Notice — Proof of Notice — Penalty for Failure to Notify Skipping it, or missing a party, is where most tax deed applications fall apart.
For residential property with an owner-occupied dwelling, there is an added safeguard. After the mailings, the sheriff, treasurer, or a designee must make reasonable attempts at personal delivery and discuss the consequences with the occupant. If personal delivery fails, they must try other means such as calls to the owner or a relative.8Montana Code Annotated. Montana Code 15-18-212 – Notice — Proof of Notice — Penalty for Failure to Notify
Residential Properties Are Auctioned, Not Deeded to You
Even if you do everything right, holding the lien on a residential property does not hand you the home. Montana requires residential properties to be sold at auction at the tax deed stage. The assignee who applied for the deed notifies all interested parties that the property will be auctioned unless redeemed, and must pay any unassigned tax liens, additional delinquent taxes, penalties, interest, and current taxes due.10Montana State Legislature. Montana Code 15-18-219 – Application for Tax Deed for Residential Property — Fee — Notice Any surplus from the auction over what is owed goes back to the former titleholder, and the treasurer must distribute those funds within 30 days of receiving payment from the buyer.11Montana Code Annotated. Montana Code 15-18-221 – Distribution of Tax Deed Auction Proceeds
For non-residential property where the redemption period has passed and notice was proper, the treasurer grants the assignee a tax deed directly.12Montana Code Annotated. Montana Code 15-18-211 – Tax Deed — Fee
Even after a tax deed issues, title is not automatically clean. Former owners or lienholders can challenge it, and many title insurers will not insure tax deed property without a court order. Montana has a statute specifically for quiet title actions tied to tax deeds, and budgeting for one is realistic on higher-value parcels.13Montana State Legislature. Montana Code 15-18-411 – Action to Quiet Title to Tax Deed — Notice
Real Costs Beyond the Delinquent Amount
The number on the county list is not what you will actually spend. Plan for:
- Assignment fees charged per parcel. Flathead County, for example, charges $50 per assessor number.
- Certified mail costs for the pre-assignment notice to the owner, and later for notices to every interested party before a tax deed application.
- A litigation guarantee, required before the tax deed application, with cost varying by county and property complexity.
- For residential tax deed applications, payment of any unassigned liens, additional delinquent taxes, and current taxes.
- Attorney and court costs if you end up filing a quiet title action after receiving a deed.
- A W-9 to the county, since any interest you earn is reportable income.
Investors who treat the list price as total exposure are underestimating what the process really costs, especially if the goal is ownership rather than earning interest on a redeemed lien.