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Tax Sale Atlas

Silver Bow County, MT tax sales

Tax Sale Atlas maps the Silver Bow County, MT tax sale, one of 2,862 counties in 36 states. Montana sells tax lien certificates paying up to 10%. Sale office, calendar and list locations read from the county’s own official pages on Sep 11, 2026.

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

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

Next sale
Nothing is scheduled in advance.
Format
In person
County office
(406) 497-6310
Every displayed fact carries a source badge. Verified Sep 11, 2026 against official county and state pages.How we verify
On this page
Look up a sale detail

County Treasurer. In person at the county treasurer's office during regular office hours. Mont. Code Ann. 15-18-220(6) permits a county to conduct the auction electronically but does not require it, and there is no statewide platform.. As applied for. There is no deed sale calendar, and most parcels never reach an auction at all.

Record quality: high. Last verified: 2026-09-11.

Mont. Code Ann. 15-18-220 - Sale at public auction, notice of auction, cancellation of assignment for unsuccessful auction, foreign entity prohibition (source accessed 2026-09-10)

Recorded reference information. Verify current sale conditions with the county. Read the full sale details.

Link to this detail

How Silver Bow County sells delinquent taxes

Tax certificate sale (lien)

In person at the county treasurer's counter, or by mail or email where the county allows it. Montana holds no tax lien auction, so there is no online bidding platform, no registration portal and no vendor to sign up with.
Run by
Butte-Silver Bow County Treasurer
Frequency
annual
Typical timing
There is no auction date.
Registration
No bidder registration exists, because there is no auction and no bidding.
Sale list
2026 delinquent mobile home tax list
When it runs
There is no auction date. Assignments are handled at the counter year round, and the earliest possible assignment anywhere in Montana is about August 29: the lien attaches no later than the first working day in August, a buyer's notice of pending assignment cannot be mailed before August 15, and payment must follow that notice by at least two weeks. Butte-Silver Bow shuts the window twice a year, stating that the Treasurer's office "does not conduct Tax Lien Assignment business during the tax season months of November and May of each year" and that "tax sale assignment business resumes when the processing of current postmarked mail is complete." Later years of taxes may be added to an existing assignment only from June 1 through July 31.
Registration and deposit

No bidder registration exists, because there is no auction and no bidding. Ask the Butte-Silver Bow County Treasurer in Room 206 at 155 W Granite Street, or by phone at (406) 497-6310, to assign the county's tax lien on a named parcel, then pay the delinquent taxes, penalty and interest plus the $65 assignment fee. Add $25 for the Treasurer's cost when an assignee later takes a tax deed, and $25 if the owner redeems the assignment. No assignment application form is published, so call first to fix the parcel and the exact payoff. The Treasurer's office states that researching the delinquent tax process before purchasing any assignment is the assignee's responsibility and that the office will not provide legal advice of any kind.

Sale format and venue
Montana sells no tax lien certificates and holds no lien auction. The county owns the lien under Mont. Code Ann. 15-17-125 and the Treasurer assigns it to a private buyer under 15-17-323, so there is no competitive bid, no interest rate to bid down and no online platform. Butte-Silver Bow does hold a separate in-person tax deed auction at the courthouse: the most recent notice set it for August 19, 2026 at 9 a.m. in the Council of Commissioners Chambers on the third floor at 155 West Granite Street, and the county has noticed these auctions in August in recent years. Bidders awarded a property must be present in person and complete the purchase after the auction ends, with no exceptions, and under Mont. Code Ann. 7-8-2303 the taxpayer or a successor in interest may repurchase at any time up to 24 hours before the first offering. On a delinquent parcel, call the Treasurer at (406) 497-6303 or (406) 497-6310 to confirm the correct amount owed before paying.
Source: Delinquent Tax Process, Butte-Silver Bow Treasurer· Verified Sep 11, 2026

Tax deed sale

In person at the county treasurer's office during regular office hours. Mont. Code Ann. 15-18-220(6) permits a county to conduct the auction electronically but does not require it, and there is no statewide platform.
Run by
County Treasurer
Frequency
As applied for. There is no deed sale calendar, and most parcels never reach an auction at all.
Typical timing
Nothing is scheduled in advance.
When it runs
Nothing is scheduled in advance. Once the redemption period runs out, 3 years after attachment or 2 years for an unimproved subdivided lot with delinquent improvement district assessments, the path forks on what is standing on the parcel. Ordinary property is deeded straight to the assignee under Mont. Code Ann. 15-18-211 for a 25 dollar deed fee plus the county's notice costs, with no auction and no bidders. Property with a dwelling currently occupied by the legal titleholder of record goes to a public auction instead: the assignee files a tax deed application with the treasurer after the redemption period expires, and the treasurer must hold the auction in the county within 60 days of receiving it. The treasurer publishes the auction notice with the date, time, location, legal description, deposit requirement and minimum opening bid. The auction runs during the treasurer's regular office hours and may be conducted electronically.
Registration and deposit

Bidders at a Montana tax deed auction do not pre-register, but three requirements bind at the auction itself. An entity must give the treasurer written proof that it is a domestic entity before the treasurer will accept its opening bid, and a foreign entity may not buy at all. The high bidder posts a nonrefundable deposit at the time of sale of 5 percent of the bid or 200 dollars, whichever is greater, applied to the price on full payment, and the treasurer may ask bidders to show they can post it. Full payment of the purchase price plus the treasurer's auction costs is due within 24 hours of the sale, excluding weekends and legal holidays, and a bidder who misses it loses the parcel to the next highest bidder. Confirm the accepted payment methods with the county treasurer before the auction opens.

Sale format and venue
The opening bid is the amount needed to redeem the lien, plus everything the assignee paid on application, plus the tax deed and recording fees, plus an amount equal to half the most recent assessed value of the land and of the dwelling. An independent appraisal meeting Montana Board of Real Estate Appraisers standards and conducted within 6 months may stand in for the assessed value. The treasurer may not take a bid below that figure. The half-value component, and anything bid above the opening bid, is surplus: the treasurer repays the assignee first where someone else buys, then pays the surplus to the legal titleholder of record within 30 days. If nobody bids, or no bidder pays, or the assignee wins and fails to pay inside the 24 hours, the treasurer cancels the assignment and files a notice of cancellation, and the investor loses the lien position entirely. The owner may redeem right up to the day of the auction.
Source: Mont. Code Ann. 15-18-220 - Sale at public auction, notice of auction, cancellation of assignment for unsuccessful auction, foreign entity prohibitionMont. Code Ann. 15-18-220· Verified Sep 10, 2026

Silver Bow County tax sale list and auction calendar

For Silver Bow 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 2026 delinquent mobile home tax list for the current advertised parcels, then recheck it before the auction.

  2. Register to bid

    Ask the county office how and when to register; many counties close registration days or weeks before the sale.

  3. Sale day

    Nothing is scheduled in advance. 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 as the source to confirm which parcels are actually offered.

Before you bid in Silver Bow County

  1. Start with the live sale list

    Pull the current advertised parcels from 2026 delinquent mobile home tax list. Lists can change before the sale, so recheck the county source before you price a parcel.

  2. Confirm registration and deposit

    Bidders at a Montana tax deed auction do not pre-register, but three requirements bind at the auction itself. An entity must give the treasurer written proof that it is a domestic entity before the treasurer will accept its opening bid, and a foreign entity may not buy at all. The high bidder posts a nonrefundable deposit at the time of sale of 5 percent of the bid or 200 dollars, whichever is greater, applied to the price on full payment, and the treasurer may ask bidders to show they can post it. Full payment of the purchase price plus the treasurer's auction costs is due within 24 hours of the sale, excluding weekends and legal holidays, and a bidder who misses it loses the parcel to the next highest bidder. Confirm the accepted payment methods with the county treasurer before the auction opens.

  3. Check the state rules that change the bid

    Read the Montana 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 Montana 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

Every Montana tax lien is effectively over the counter, because assignment is the only way one is ever acquired. The county holds each lien from the day it attaches, and the treasurer must assign it to any person who mails the assessed owner the statutory notice and pays the delinquent taxes, penalties, interest and costs plus the county's assignment fee. After the late August allocation step, whatever is left sits with the treasurer and can be assigned on demand for the rest of the year, subject to the same notice rules: not earlier than August 15, mailed at least 2 weeks before payment and no more than 60 days before it. Older tax years are assignable the same way. Separately, land the county itself took by tax deed is sold at a public auction the county commissioners must order within 6 months of acquiring title, at a price the board fixes in advance, with the list of lands and the time and place published by the county clerk. That county land auction is not a tax lien or tax deed sale and the delinquent taxpayer may repurchase up to 24 hours before the first offering.

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

Use the arrow keys to switch between these sections.

County offices

Tax Collector (runs the certificate sale)

Butte-Silver Bow County Treasurer

(406) 497-6310

Butte-Silver Bow Courthouse, Room 206, 155 W Granite St, Butte, MT 59701 (mailing: P.O. Box 611, Butte, MT 59703)

Official website

County notes

  • Butte-Silver Bow publishes no list of real property tax liens available for assignment, and its tax deed auction notice names no parcels. The only delinquent list the Treasurer posts covers mobile homes. Find a target parcel through the county property tax search by assessment number, owner name, street address or geocode, then call the Treasurer to confirm the delinquency and the payoff.
  • Treasurer fee schedule for lien assignments in this county: $65 assignment fee, $25 Treasurer's cost for a tax deed, and $25 to redeem an assignment. Montana assignment fees are set county by county, so these figures apply to Butte-Silver Bow only.
  • Real property taxes fall due November 30 and May 31. A missed installment draws a 2% penalty plus 10% annual interest, and once both halves of a year go unpaid the entire year must be cleared with penalty and interest. Mobile home and personal property halves are due July 31 and September 30.
  • Sheriff's sales in Butte-Silver Bow are run by the Law Enforcement Department on the courthouse steps under state statute and are civil execution sales, not tax sales. Tax liens and tax deeds run through the Treasurer's office.
  • The Treasurer's office will not give legal advice on the assignment or tax deed process and directs buyers to their own counsel. Tax liens from 2015 and earlier follow the older Title 15 chapters; 2016 forward follows the House Bill 18 rewrite.

Montana rules

Max interest rate
10% per year, fixed by statute (nothing is bid)
Minimum return
No statutory floor; every certificate earns the same statutory rate
Redemption
The clock runs from attachment of the tax lien, which happens no later than the first working day in August, and it ends on the first working day in August of the third year after that. Redemption stays open for the whole period and the assignee cannot shorten it. On the residential auction track the right to redeem runs further still: the statutory notice tells the parties that a tax deed will be auctioned unless the lien is redeemed before the date of the auction, and 15-18-112(4) lets a particular tax year be redeemed until a deed has issued under 15-18-211 or 15-18-220. Interest and costs keep accruing until the day of redemption, and the county treasurer, not the assignee, calculates the payoff as of the date of payment. A redemption before the lien is assigned goes to the county; after assignment the treasurer pays the assignee.
Deed deposit
The high bidder posts a nonrefundable deposit with the county treasurer at the time of sale of 5 percent of the bid or 200 dollars, whichever is greater, and the deposit is applied to the sale price on full payment. Notice of the deposit requirement must be posted at the auction site, and the treasurer may require bidders to show they can post it. The treasurer may refuse to recognize a bid from someone who previously bid and then refused to honor the bid.
Surplus proceeds
Montana pays the owner's equity out rather than letting it be forfeited. The portion of the opening bid equal to half the most recent assessed value of the land and of the dwelling is treated as surplus funds, and so is anything a winning bid adds above the opening bid. Where the deed is bought by someone other than the assignee, the treasurer first repays the assignee the amount paid for the assignment, including delinquent taxes, penalties, interest and costs, plus everything paid on the tax deed application under 15-18-219(2). The treasurer then distributes the surplus to the legal titleholder of record within 30 days of receiving payment from the purchaser, whether or not the titleholder lives in Montana. On the ordinary non-auction track there is no sale, no bidding and no surplus: the assignee receives the deed itself.
Governing statute
Mont. Code Ann. Title 15, ch. 17

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 Montanarules and every county →

Frequently asked questions

Does Silver Bow County, Montana sell tax liens or tax deeds?

Silver Bow County follows Montana's tax lien state system.

When is the Silver Bow County tax certificate sale?

There is no auction date. Assignments are handled at the counter year round, and the earliest possible assignment anywhere in Montana is about August 29: the lien attaches no later than the first working day in August, a buyer's notice of pending assignment cannot be mailed before August 15, and payment must follow that notice by at least two weeks. Butte-Silver Bow shuts the window twice a year, stating that the Treasurer's office "does not conduct Tax Lien Assignment business during the tax season months of November and May of each year" and that "tax sale assignment business resumes when the processing of current postmarked mail is complete." Later years of taxes may be added to an existing assignment only from June 1 through July 31. The sale is held in person. Always confirm the exact date with the County Treasurer before the sale.

How often does Silver Bow County hold tax deed sales?

Silver Bow County holds its tax deed sale As applied for. There is no deed sale calendar, and most parcels never reach an auction at all. Nothing is scheduled in advance. 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. Montana's redemption rule: 3 years from attachment of the tax lien, ending on the first working day in August; 2 years for a subdivided residential or commercial lot with delinquent improvement district assessments and no habitable dwelling or commercial structure. Call the County Treasurer 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 Silver Bow County tax sale list?

Silver Bow County posts its tax sale list at co.silverbow.mt.us. 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 Sep 11, 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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Call Butte-Silver Bow County Treasurer