Montana Tax Deed Surplus: Only Owner-Occupied Homes Go to Auction
Montana has no tax lien auction. Every August the county attaches a lien to each delinquent parcel, and an investor who wants one sends the owner a certified notice and buys an assignment for the amount due (MCA §§ 15-17-125, 15-17-323). Nobody bids anything up, so no surplus comes out of that step. If the lien isn't redeemed within three years, the investor normally applies for a tax deed and simply receives the property. No sale, no surplus.
The exception: a home the owner still lives in
Since 2019, a different rule applies when the parcel has a dwelling occupied by the legal titleholder of record and the land is classified as residential, or as certain agricultural or forest land (§ 15-18-219(1)(b)). The investor doesn't get a deed. After applying, the treasurer must hold a public auction within 60 days. The opening bid is the amount needed to redeem, plus what the investor paid with the application, plus deed and recording fees, plus half of the most recent assessed value of the land and dwelling, or half of a recent independent appraisal (§ 15-18-220(1)–(2)).
The surplus is paid to you, no claim form needed
That half of the assessed value, and anything bid above the opening bid, is the surplus. The statute doesn't make the owner file a claim for it: the county treasurer must pay it to the legal titleholder of record within 30 days of receiving payment from the buyer (§§ 15-18-220(4), 15-18-221(3)). The investor gets back what it paid for the assignment and its application costs (§ 15-18-221(2)). If you lived in the home and it went to auction, contact the county treasurer to make sure they have your current address.
If nobody bids, there is no sale
If there are no bidders, or the winning bidder doesn't pay, the treasurer cancels the investor's assignment (§ 15-18-220(3)(c)–(d)). The property isn't deeded away for the tax bill, so there's no lost equity to claim.
What a typical Montana surplus looks like
The median owner-occupied home in Montana is worth $375,800 and pays $2,693 a year in property tax (U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates). Even three unpaid years come to about $8,079 before interest and costs — around 2.1% of that home's value. Whatever the sale brings in above the debt is the surplus. As an illustration, not a prediction: if that home sold for half its value, about $180,000 would be left over for the former owner and any lienholders.
45.5% of owner-occupied homes in Montana are owned outright. On those, no mortgage lender stands ahead of the former owner when the surplus is paid out: the claim is the owner's, or the heirs', alone.
Looking for a list? Our directory doesn't have an official Montana county list yet, so for now ask the office that ran the sale. The counties that do publish one are in our directory of official surplus funds lists.
This article is general information, not financial or legal advice. Contact the county treasurer if a tax deed auction has been held on a home you lived in. See our broader guide on surplus funds after a tax sale and the Montana state page for lien and redemption mechanics.