Counties / Montana counties / Granite County
Granite County, Montana tax sales
How tax sales work in Granite County, Montana
Montana law controls every tax sale in Granite County — the county runs the sale, but what is sold, what it pays and how long the owner can redeem are all set by the state:
| What Montana sells | Tax lien certificates |
|---|---|
| Interest / penalty | 10% per year (5/6 of 1% per month) plus a 2% penalty on the delinquent amount (MCA 15-16-102) |
| Redemption period | 3 years from attachment of the tax lien, ending the first working day in August (MCA 15-18-111(1)); 2 years for property subdivided as a residential or commercial lot with delinquent special improvement district / rural SID assessments and no habitable dwelling or commercial structure on it (MCA 15-18-111(2)) |
| When sales happen | No conventional auction in most counties: the county attaches the lien no later than the first working day in August (notice by the last Monday in June) and holds it; investors acquire it thereafter by assignment from the county treasurer (MCA 15-17-323) |
| Governing law | Montana Code Annotated Title 15, Chapters 16-18 (MCA 15-16-102; 15-17-121 et seq., 15-17-323; 15-18-111; 15-18-211, 15-18-219 to 15-18-221) |
| County (Census) | Granite County — county, Montana · FIPS 30039 |
Montana is assignment-based, not bid-based: there is generally no bidder registration, deposit or rate bidding, and the assignee must first mail the statutory notice of pending assignment (MCA 15-17-323) and pay taxes, penalty, interest, costs and the county assignment fee. CORRECTION to common summaries: the 2-year period is not a general 'abandoned property' rule — it is the vacant subdivided-lot / delinquent SID-assessment rule in 15-18-111(2). For residential property, the deed stage is a statutory public auction: after the redemption period expires the assignee applies for a tax deed under MCA 15-18-219 (paying other liens, delinquent and current taxes, plus a $25 fee, with notice to interested parties), and the county treasurer must hold a public auction in the county within 60 days of the application (MCA 15-18-220, as amended by SB 306, 2025). The opening bid equals the redemption amount + the assignee's 15-18-219 payments + deed/recording fees + one-half of the most recent assessed (or appraised) value of the land and dwelling; payment is due within 24 hours, and if the auction fails the assignment is cancelled. Proceeds are distributed under MCA 15-18-221 (assignee repaid its amounts; surplus to the legal titleholder of record). Non-residential property still follows the direct-deed route of MCA 15-18-211.
The process, step by step
1 · The list publishes. Montana sales run on this rhythm: No conventional auction in most counties: the county attaches the lien no later than the first working day in August (notice by the last Monday in June) and holds it. The county's sale list — the parcels actually being sold — is published ahead of the sale by the county office that runs it, and in many Montana counties also through the state's sale channels (Mostly in-person / direct assignment through the county treasurer; No statewide online auction platform for the lien assignment).
2 · Register and fund — before sale day. Registration and bidder deposits are handled by the county or its sale platform and close before the sale, in most counties the day before. The amount and ID requirements are set in the county's own sale notice, not in state law — confirm them on the current published notice before you rely on them.
3 · Research every parcel. Compare the taxes owed against assessed value and recorded sales, check property type and occupancy signals, and price in the state's redemption rule above: it decides whether your money comes back with the statutory return, or your path runs to the property itself.
4 · Bid the number you wrote down. Set your max bid (deeds) or floor rate (liens) from the research, before the sale opens. The state's return is paid on the tax obligation — not on whatever extra a bidding war adds on top of it.
5 · After the sale. Owners redeem inside the window above; lists change as they do. Track the parcels you care about, because a watched property redeeming or withdrawing is information you want before — not after — you wire a deposit for the next sale.
What Granite County publishes — and our verification status
Under Montana law, the county publishes its sale list as a public record ahead of each sale. What we have not done is guess at this county's exact channel: which office posts the list, in what format, and on what posting schedule are being verified county by county against the county's own publications. Until that check is complete, this page carries the verified state rules — not a live Granite County sale list — and says so plainly.
Coverage status: Granite County — verification in progress
Alerts activate county by county as each county's published list is verified. Join the Montana watchlist and you are first in line when Granite County alerts switch on — plus you get the free Montana sale calendar and law guide today.
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All Montana counties: Montana county index · Rules: Montana tax sale laws · Montana sale calendar · Montana investing guide · New to a term? Glossary · FAQ
County facts (name, state, FIPS 30039) from the US Census Bureau county list; state rules verified 2026-10-30 — sources on the Montana law page. Educational only, not investment advice.