Montana · Weigh your options
Property tax foreclosure in Montana
Montana is a tax lien state. If you do not pay, the county attaches a tax lien to your property, and it may assign that lien to a private buyer. You then have about 3 years to redeem by paying what is owed, with penalty and interest. If you do not redeem a home you live in, it must be sold at a public auction and the extra money goes to you; other property can pass by tax deed with no surplus paid to the owner.
Reviewed against Montana law and official sources on October 11, 2026. General information, not legal advice.
The property tax process in Montana, step by step
Taxes become delinquent
November 30 and May 31Half of your property tax is due by 5 p.m. on November 30 and the other half by 5 p.m. on May 31, unless your notice was mailed late. Unpaid amounts are delinquent, and the county adds a 2 percent penalty plus interest of 5/6 of 1 percent a month until you pay.
Mont. Code Ann. § 15-16-102
Notice and the tax lien
Notice by the last Monday in June; lien attaches by the first working day in AugustThe county treasurer publishes or posts a notice listing delinquent properties and must mail you a notice at least 2 weeks before the lien attaches. Once the lien attaches, the county holds it unless it is assigned to a third party who pays the delinquent taxes. You get a copy of the tax lien certificate, which states when the county or the buyer can get a tax deed.
Mont. Code Ann. §§ 15-17-122, 15-17-125
Redeem your property
By the first working day in August, 3 years after the lien attachedYou, a lienholder or anyone with an interest can redeem by paying the lien amount with penalty, interest and costs, plus any later taxes, with the same penalty and interest. The deadline is 2 years instead of 3 for certain vacant subdivided lots with unpaid special improvement district assessments. If the county still holds the lien, you may be able to pay off one tax year at a time.
Mont. Code Ann. §§ 15-18-111, 15-18-112
Notice that you may lose the property
May 1 to May 30 of the year the redemption period endsThe county, or the buyer who holds the assigned lien, must send notice by certified mail, return receipt requested, to the occupant and to the owner and lienholders found in a title report, and must also publish it. If the buyer does not file proof of this notice, the treasurer must cancel the tax lien and the assignment. If you get this letter, it is the last warning before a deed or auction.
Mont. Code Ann. §§ 15-18-212, 15-18-219
A home you live in is sold at auction
Auction within 60 days after the buyer appliesIf you live in the home as the owner of record, the lien buyer cannot simply take a tax deed. The buyer must apply, and the treasurer must hold a public auction where the opening bid includes the amount owed plus half of the assessed value of the land and home. Within 30 days after the winning bidder pays, the treasurer must pay the surplus to the legal owner of record, even if you have moved out of state.
Mont. Code Ann. §§ 15-18-219, 15-18-220, 15-18-221
Other property passes by tax deed
After the redemption period endsFor property that is not occupied by its owner, the treasurer grants a tax deed to the lien buyer, or to the county if the county commissioners direct it. If the county takes the deed, you may buy the property back up to 24 hours before the county first offers it for sale by paying the taxes, interest and costs. Montana's law on county sales of tax deed land sends any extra money to the county, not to the former owner.
Mont. Code Ann. §§ 15-18-211, 7-8-2303, 7-8-2306
Relief that can help
Apply each yearThe Elderly Homeowner/Renter Credit is a refundable income tax credit of up to $1,150 for Montanans 62 and older with household income under $45,000, and you can claim it even if you do not otherwise file a return. The Department of Revenue also runs a Land Value Property Tax Assistance Program for long held family homes whose land value is far higher than the home's.
Common questions in Montana
What is the minimum bid at a Montana tax deed auction for an occupied home?
The treasurer cannot accept a bid below the opening bid. That bid is the amount needed to redeem, plus the buyer's application costs and fees, plus half of the assessed value of your land and home (or half of a recent independent appraisal). This rule is meant to protect your equity, and the surplus is paid to you within 30 days after the sale.
What happens if no one bids at a Montana tax deed auction?
If there are no bidders, or no bidder completes payment within 24 hours, the treasurer must cancel the lien buyer's assignment and file a notice of cancellation. Ask the county treasurer right away what you now owe and how to redeem.
Does a Montana county pay me surplus if it takes a tax deed to my property?
Montana's statute on county sales of tax deed land does not provide for paying any extra money to the former owner, and it has not been amended since 1991. Since Tyler v. Hennepin County (2023), keeping equity beyond the tax debt can be an unconstitutional taking. If the county took a tax deed to property you did not live in, talk to a lawyer or legal aid about a surplus claim.
Step by step
More on foreclosure in Montana
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(800) 569-4287CFPB: help for struggling homeowners
Plain-language guides from the Consumer Financial Protection Bureau, and a complaint form if your mortgage servicer is not following the rules.
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Sources for this page
- Mont. Code Ann. § 15-16-102 Time for payment, penalty for delinquency
- Mont. Code Ann. § 15-17-121 Definitions (tax lien)
- Mont. Code Ann. § 15-17-122 Notice of pending attachment of tax lien
- Mont. Code Ann. § 15-17-125 Attachment of tax lien
- Mont. Code Ann. § 15-18-111 Time for redemption
- Mont. Code Ann. § 15-18-112 Redemption from property tax lien
- Mont. Code Ann. § 15-18-211 Tax deed
- Mont. Code Ann. § 15-18-212 Notice that tax deed may issue
- Mont. Code Ann. § 15-18-219 Application for tax deed for residential property
- Mont. Code Ann. § 15-18-220 Sale at public auction
- Mont. Code Ann. § 15-18-221 Distribution of tax deed auction proceeds
- Mont. Code Ann. § 7-8-2303 Repurchase rights of taxpayer
- Mont. Code Ann. § 7-8-2306 Distribution of sale and lease proceeds
- Mont. Code Ann. § 70-9-825 Agreement to locate property
- Montana Department of Revenue, Unclaimed Property
- Montana Department of Revenue, Elderly Homeowner/Renter Credit
- Montana Department of Revenue, Land Value Property Tax Assistance Program
- Montana Code Annotated 2025, Title 71, Chapter 1, Part 3: Small Tract Financing Act (table of contents)
- Mont. Code Ann. § 71-1-312, Discontinuance of foreclosure when default paid
- Mont. Code Ann. § 71-1-313, Conditions for foreclosure by advertisement and sale
- Mont. Code Ann. § 71-1-315, Notice, sale, payment
- Mont. Code Ann. § 71-1-316, Disposition of proceeds of sale, surplus funds
- Mont. Code Ann. § 71-1-317, Deficiency judgment not allowed
- Mont. Code Ann. § 71-1-318, Trustee's deed
- Mont. Code Ann. § 71-1-319, Possession
- Mont. Code Ann. § 71-1-222, Proceedings in foreclosure suits
- Mont. Code Ann. § 71-1-232, Deficiency judgment not allowed on purchase price mortgage
- Mont. Code Ann. § 25-13-802, Time for redemption
- Montana Department of Commerce, Homeowner Assistance Fund
- Montana Division of Banking and Financial Institutions, Consumer Information (Foreclosure Prevention)