Montana Lien Waiver & Release — The Advance Waiver Is Void, but the Rule Is Not in the Lien Act (Mont. Code Ann. § 28-2-723, 2026)
✓ Verified against Montana statutes · Reviewed September 2026 · By Michael Evan — Founder · 50 states · 799 rules
Montana mechanics lien deadlines at a glance
Preliminary Notice
None — N/A
Mechanics Lien
90 days — From last date of furnishing
Enforcement
2 years — From filing
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The Statute Is Real, and It Is Filed Where Nobody Looks
A lien waiver and release is the document a contractor, subcontractor, or supplier signs to give up lien rights, ordinarily in exchange for payment. States sort into rough camps. Statutory-form states — California, Texas, Wyoming , Mississippi — wrote the document itself into the code. Anti-waiver states like Kansas void the advance waiver outright. States like Nebraska went the other way and legislated the advance waiver into enforceability. Montana belongs to the anti-waiver camp, and the reason so many contractors believe otherwise is a matter of shelving. The Montana Construction Lien Act , Mont. Code Ann. §§ 71-3-521 through 71-3-564, contains no waiver section at all . It runs from the release of a notice of right to claim lien at § 71-3-538 directly to lien priority at § 71-3-541 without ever addressing the subject. Read the whole part and the reasonable conclusion is that Montana leaves waivers to ordinary contract law. The rule is one title away, enacted in 1999 and placed among the contract provisions Montana treats as having an illegal object. Mont. Code Ann. § 28-2-723 is captioned Construction contracts requiring lien or bond waiver void : One sentence, and it does two things most anti-waiver statutes do not do together. It reaches the payment bond claim as well as the lien, which matters enormously on Montana public work where no lien attaches to public property…
What § 28-2-723 Does, and the Six Things It Leaves Alone
The bottom four rows are the shape of Montana practice. The statute governs when a waiver may be demanded and says nothing whatever about what it must say . Once payment has been made, the document is a private contract drafted by the party upstream and construed under ordinary Montana contract law, with no statutory benchmark to measure it against.
Everything Turns on the Word “Paid”
Because § 28-2-723 protects a claimant only before it has been paid, the protection rests on a factual question that the standard construction sequence goes out of its way to blur. The draw meeting asks for the signed waiver first and releases funds afterward. At the moment of signature, as a matter of fact, payment has not been made. Montana's statute does not by its terms convert that ordinary sequencing into a void waiver, and no contractor should want to be the test case. The fix is a drafting fix rather than an argument, and it costs nothing: Make the Payment Question Answerable From the Document Make the release expressly conditional on actual receipt and clearance of the identified payment. Name the payment by amount and by check or wire reference . State that the release has no effect until the funds clear . Then scope it to a stated date range of labor and materials, and state affirmatively that lien rights for all other services and materials on the improvement — including retainage, stored materials, and pending change orders — are retained . Montana supplies no default scope, so that closing sentence is the only thing that makes a progress waiver partial. The same discipline belongs at contract signing. Because § 28-2-723 makes the advance waiver clause the thing a construction contract may not contain, a lien waiver clause in a Montana subcontract is worth…
The Bond Half of the Statute Is the Underrated Half
Most state anti-waiver statutes protect the construction lien and stop. That leaves a gap precisely where a subcontractor is most exposed, because on public work and on bonded private work the lien is not the remedy at all — the payment bond is. An advance waiver of bond rights on a public project takes away the only thing the claimant has. Montana closed both doors in the same sentence. Section 28-2-723 voids a contract provision requiring waiver of the right to a construction lien or a right to a claim against a payment bond before payment. For a Montana subcontractor working state or local public projects, that clause is the more valuable half of the statute, and it is the half almost never quoted in the summaries that circulate. It is worth noting what the statute still does not reach. It governs what a construction contract may require. A standalone waiver document presented later, after payment, is a different transaction on the statute's own terms — and that is the transaction Montana permits.
The Lien Rights a Montana Waiver Releases
A waiver is only worth arguing about while a lien right survives, and Montana is one of the states where the right can be lost before any waiver is signed. The Mechanics Lien Management State System tracks these dates from the project record; the underlying text sits at Montana lien statutes , with the calculator on the Montana mechanics lien hub . Two rows deserve a second look. The § 71-3-531 notice of right to claim lien is mandatory, not optional , for claimants outside its four exceptions — which in practice means sub-tier claimants on residential work of four or fewer units. Section 71-3-531(1) exempts an original contractor furnishing directly to the owner at the owner's request, a wage earner or laborer performing personal labor services, a person furnishing for a dwelling for five or more families, and a person furnishing for an improvement partly or wholly commercial in character. Everyone else must give notice no later than 20 days after first furnishing, and a late notice leaves the lien enforceable only for what was furnished in the 20-day window before the notice was given. Full treatment sits in the Montana notice of right to claim lien guide . The second is the one-year expiry in § 71-3-531(6) . A copy of the notice goes to the county clerk and recorder within 5 business days after it is given, and the filed notice is effective for 1 year from the date of…
Generating and Tracking Montana Waivers
Because Montana voids the advance waiver but regulates nothing about the document, a Montana job runs on two tracks at once: a statutory track that can forfeit the lien through a missed or expired notice, and a contractual track where the waiver form controls because no statute does. The Mechanics Lien Management Method handles them together — a conditional waiver template keyed to clearance, a reconciliation between what each waiver recited and what actually cleared, the 20-day notice and its one-year continuation date, and the 90-day filing clock. Montana Waiver & Lien Generator Produce a conditional Montana waiver scoped to an identified payment and date range, the § 71-3-531 notice of right to claim lien with its filing copy, and the verified § 71-3-535 lien for the county clerk and recorder — all from one project record, with the 20-day notice date, the one-year notice expiry, the 90-day filing date and the two-year § 71-3-562 enforcement date calculated and tracked. Pair it with the property search tool to confirm the record owner before filing, the lien waiver hub for how Montana compares to the statutory-form and pro-enforcement states, and the mechanics lien deadlines by state pillar for cross-state work. When a waiver clause turns up in a Montana subcontract before any work has started — the exact provision § 28-2-723 refuses to enforce — connect with a Montana…
Generate the Right Montana Documents in Minutes
The Mechanics Lien Management lien generator produces a conditional Montana waiver, the § 71-3-531 notice, and the verified § 71-3-535 lien from one project record, with the Mechanics Lien Management deadline calculator tracking the 20-day notice, the one-year notice expiry, and the 90-day filing clock. Miss the deadline and you lose your lien rights entirely.
Frequently Asked Questions
Can lien rights be waived in advance in Montana?
No, not by contract. Mont. Code Ann. § 28-2-723 provides that a construction contract may not contain provisions requiring a contractor, subcontractor, or material supplier to waive the right to a construction lien or a right to a claim against a payment bond before that party has been paid for the labor, materials, or both labor and materials furnished. A lien waiver clause buried in a Montana subcontract and signed months before anyone breaks ground is the exact thing the statute refuses to enforce. What the statute does not do is bar a waiver signed after payment — that transaction is ordinary and permitted, which is why the operative question in almost every Montana dispute is whether payment had in fact been made.
Why can I not find Montana's lien waiver rule in the Construction Lien Act?
Because it is not there. The Montana Construction Lien Act at Mont. Code Ann. Title 71, chapter 3, part 5 contains no waiver section at all — it moves from the release of a notice of right to claim lien at § 71-3-538 to lien priority at § 71-3-541 without ever addressing waiver. The anti-waiver rule was enacted in 1999 as a contract-law provision and placed in Title 28, chapter 2, part 7, among the provisions Montana treats as having an illegal object. A contractor who reads the entire lien act looking for the waiver rule will conclude Montana has none, and will be wrong in the one direction that costs money.
Does Montana's anti-waiver statute cover payment bond claims?
Yes, and that is unusual. Mont. Code Ann. § 28-2-723 reaches a provision requiring waiver of the right to a construction lien or a right to a claim against a payment bond. Most state anti-waiver statutes protect only the lien, which leaves the bond claim on public and bonded private work exposed to exactly the advance waiver the legislature was trying to stop. Montana closed both doors in the same sentence. For a subcontractor on Montana public work, where no lien attaches to public property and the bond is the entire remedy, this is the more valuable half of the statute.
Is there a required lien waiver form in Montana?
No. Montana prescribes no statutory waiver template, no required caption, no mandated conditional or unconditional categories, no notarization requirement, and no recording requirement. This is where Montana diverges sharply from statutory-form states like California and Texas, which wrote the document itself into the code. Section 28-2-723 controls when a waiver may be required and says nothing whatever about what it must say. Once payment has been made, the form handed across the table is whatever the party upstream drafted, and it is measured under ordinary Montana contract law rather than against a statutory benchmark.
What does a Montana lien waiver cover if the document does not say?
Montana supplies no answer, and the silence is the problem. States like Nebraska legislated a default scope, providing that a waiver reaches all lien rights on the improvement unless specifically limited. Montana enacted no such provision, so the scope of a Montana waiver is whatever the document's language supports as a matter of contract interpretation. There is no statutory presumption to fall back on and no statutory ambiguity rule pointing in either direction. A general release signed at a progress draw is therefore an interpretation fight rather than a settled question, which makes the drafting of the waiver itself the only reliable protection.
Do Montana subcontractors have to send a notice before they can claim a lien?
On smaller residential work, yes. Mont. Code Ann. § 71-3-531 requires a claimant to give a notice of right to claim lien to the contracting owner in order to claim a lien, with four exceptions: an original contractor furnishing directly to the owner at the owner's request, a wage earner or laborer performing personal labor services, a person furnishing for a dwelling for five or more families, and a person furnishing for an improvement that is partly or wholly commercial in character. The notice may not be given later than 20 days after services or materials are first furnished, and a late notice limits the lien to what was furnished within the 20-day period before the notice was given.
How long does a Montana notice of right to claim lien stay effective?
One year, and this catches long projects. Under Mont. Code Ann. § 71-3-531(6) a copy of the notice must be filed with the county clerk and recorder within 5 business days after the notice is given, and the filed notice is effective for 1 year from the date of filing. Staying protected past that point requires a continuation. A Montana subcontractor on a project that runs eighteen or twenty-four months, which is unremarkable on larger work, can hold a perfectly valid notice that quietly expired at month twelve. The lien filing deadline under § 71-3-535 is a separate 90-day clock and does not revive an expired notice.