This page provides a public overview of Montana Senate Bill 535 (Right to Try Montana) for patients, families, providers, and community members seeking factual information about the law.
SB 535 updates Montana’s Right to Try framework by establishing a regulatory structure and licensing pathway for Experimental Treatment Centers to provide experimental treatments, including investigational drugs, biologics, devices, or other therapies that have completed Phase 1 safety trials. The law provides some licensing requirements for Experimental Treatment Centers, and provides authority to the Department of Public Health & Human Services (DPHHS) to create regulations that: set operating standards, policies and procedures, safety and oversight requirements, inspections, and data/quality systems, including outcome monitoring for adverse event reporting for these centers. SB 535 includes provisions that require informed consent, patient eligibility, and provider protections, while clarifying how patients may access (and pay for) this type of care.
These points summarize major features of SB 535 and how Experimental Treatment Centers will operate in Montana.
Effective immediately: SB 535 took effect May 13, 2025; DPHHS rulemaking will provide an application process and clarify operational details.
Licensing required: Experimental Treatment Centers must be licensed by DPHHS; application fee $10,000 and annual renewal $5,000.
Health freedom & access requirement: Centers must allocate 2% of net annual profits to expand access, either by providing free care to qualifying Montana residents or contributing to the new Insurance Premium Support Account.
Oversight & reporting: DPHHS and the Children, Families, Health & Human Services Interim Committee share responsibilities for rulemaking, implementation review, and reporting on the Insurance Premium Support Account.
Insurance Premium Support Account: Funds (including center contributions) help eligible Montanans (139%–400% FPL) pay marketplace health insurance premiums; DPHHS reports annually to the Children, Families, Health & Human Services Interim Committee.
Patient eligibility & consent: Access requires patients to have evaluated other treatment options currently approved by the FDA, received a recommendation from their health care provider, and provided informed consent.
Center protections: The state may not block lawful access to experimental treatments.
When draft rules are noticed, interested parties are encouraged to submit written comments or testify at hearings. It will be helpful for the Department to hear from members of the public that support the Right to Try and the framework established in SB 535.
How to Participate: [Will add DPHHS comment portal or email when notified]
Written comment period: [Will provide date/time/location once notified]
Final Rules Target: [Will provide when available]
DPHHS is responsible for adopting rules that include minimum operational standards, written policies/procedures, oversight mechanisms, inspections, facility safety standards, and data collection & quality assurance (including outcome monitoring and adverse event reporting).
Draft Rules: [Pending / will link when posted]
Public Hearing(s): [Will provide date/time/location once notified]
Written comment period: [Will provide date/time/location once notified]
Final Rules Target: [Will provide when available]
The Children, Families, Health & Human Services Interim Committee (CFHHS) oversees implementation updates and is tasked with reviewing the administrative rules once published. Once the program is implemented, DPHHS is to report to the CFHHS regarding the status of the Insurance Premium Support Account.
Recent/Upcoming Agendas: [Link]
Committee Materials: [Link]
Patients who have evaluated FDA-approved options, have a health care provider recommendation, and provide informed consent.
Informed consent may be written, provided through interactive discussions that are recorded, or some combination of each. Informed consent must be signed by the patient or a parent or legal guardian.
An “experimental treatment” is the provision of an investigational drug, biological product, device, or other treatment by a health care provider that has completed Phase 1 of an FDA approved clinical trial and is either still under FDA-approved investigation in a clinical trial or has a documented safety record from a qualified medical institution.
No. Experimental treatments are not the same as clinical research trials, but both are closely related. Experimental treatments that have completed phase I of a clinical trial may be provided to patients in accordance with Montana law. Clinical research trials are regulated by the United States Food and Drug Administration.
No. SB 535 does not require coverage; however payers may choose to cover costs. The Insurance Premium Support Account is specifically for marketplace premiums, not treatment costs. It is important to note that any conditions that arise as a result of an uncovered experimental treatment are also generally not covered by insurance.
Possibly. Payment arrangements are between the patient and the center/provider unless a payer elects to cover some costs.
No. Consent explicitly acknowledges that experimental treatments cannot be used to end a patient’s natural life.
DPHHS is responsible for licensing all health care facilities in Montana, including Experimental Treatment Centers.
SB 535 established the statutory framework allowing for Experimental Treatment Centers and the provision of experimental treatments in Montana. The bill granted specific authority to DPHHS to draft further regulations regarding licensure of Experimental Treatment Centers, including: minimal operational standards, written policies and procedures; oversight mechanisms; facility inspections; facility safety standards; and data collection and quality assurance systems, including outcome monitoring and adverse event reporting. Neither statute nor administrative rule will necessarily answer every question that may arise regarding experimental treatments. It is important to understand that rules can only be promulgated under specific legal authority. If a department exceeds that authority and creates rules beyond what the law permits, such actions would be improper and likely unlawful.
During the official public comment period, you can submit written comments or testify at a hearing. We will post dates/links here:
The Children, Families, Health & Health & Human Services Interim Committee oversees implementation updates and receives DPHHS’s September 1 annual report on the Insurance Premium Support Account.
Disclaimer: The Montana Bioscience Alliance (MBA) provides the information on this page solely to inform and educate the public about Senate Bill 535 (“Right to Try Montana”). The content presented reflects a summary and explanation of the bill’s provisions and context. It does not constitute advocacy, legal advice, or an endorsement of the bill’s passage or policy positions. The MBA is not a sponsor of SB 535, nor does it take a position for or against the legislation. Readers are encouraged to review the bill text and consult with appropriate policy experts, legislators, or legal counsel for additional guidance.

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