Montana Tax Deed Surplus: 30 Days to File a Notarized Claim, or It's Gone

Montana sells tax liens through certificates — investors pay the delinquent taxes owed, no cash bid-up at that stage, so no surplus is generated by the original sale itself. If the certificate goes unredeemed, the holder applies for a tax deed, and the county is then required to hold a public auction of the property. That auction — priced above the taxes owed and half the property's most recent assessed value floor — is where actual surplus comes from.

Who holds it

The county treasurer holds and distributes the surplus, under Montana Code Annotated §§ 15-18-220 (the auction) and 15-18-221 (distribution).

The 30-day deadline is the tightest we've found

Under MCA § 15-18-219(4), claimants — including the titleholder of record and any lienholders — must file a notarized statement of claim with the county treasurer within 30 days of the auction. Miss it and the claim is permanently barred by statute; lienholders in particular have to affirmatively file or they waive their interest entirely. The treasurer must then distribute funds within 30 days of receiving payment from the auction purchaser. Compared to the years-long windows most states give, Montana's 30-day clock is genuinely the shortest of any state we've researched — act as soon as you learn a sale has happened, not after.

The process itself is administrative

No court petition is required for the property owner — it's a notarized statement of claim filed directly with the county treasurer. The legal titleholder of record is paid directly regardless of in-state residency.

What happens if you miss the window

Some secondary sources describe unclaimed Montana surplus eventually being treated as general unclaimed property after roughly 5 years, but we weren't able to independently confirm that specific figure against the primary statute text, so treat it as a reasonable estimate rather than a confirmed rule — and don't count on it as a fallback given how strict the initial 30-day window already is.

This article is general information, not financial or legal advice. Given the 30-day deadline, contact the county treasurer immediately if you learn a tax deed auction has occurred on a property you have an interest in. See our broader guide on surplus funds after a tax sale and the Montana state page for lien and redemption mechanics.