New Montana laws taking effect May 8, 2025

30 laws take effect May 8, 2025.

Of the 778 bills enacted since 2025, 774 have an effective date and 4 don't yet (listed below). A law here takes effect that day by its main provisions; parts of a staggered act may take effect on other dates.

Updated Oct 31, 2026 at 11:39 a.m. EDT.

Healthcare (5)

  • HB 543 · 2025 Regular SessionPublished

    Repeal termination date on reporting and disclosure of violence against health care employees

    How we got this date

    Published by the legislature: All Sections: 2025-05-08.

    How effective dates are worked out

  • HB 574 · 2025 Regular SessionPublished

    Authorizing implementation of the certified community behavioral health clinic model

    How we got this date

    Published by the legislature: All Sections: 2025-05-08.

    How effective dates are worked out

  • HB 732 · 2025 Regular SessionPublished

    Establish prompt cost report reimbursement act

    How we got this date

    Published by the legislature: All Sections: 2025-05-08.

    How effective dates are worked out

  • HB 744 · 2025 Regular SessionPublished

    Authorize speech-language pathology aides and audiology aides

    How we got this date

    Published by the legislature: Sections 1 and 3-4: 2025-05-08.

    Parts of this act take effect on other dates.

    How effective dates are worked out

  • SB 390 · 2025 Regular SessionPublished

    Revise definitions in Clean Indoor Air Act

    How we got this date

    Published by the legislature: All Sections: 2025-05-08.

    How effective dates are worked out

Public Lands (5)

Crime (4)

  • HB 589 · 2025 Regular SessionPublished

    Generally revise peace officer education standards

    How we got this date

    Published by the legislature: All Sections: 2025-05-08.

    How effective dates are worked out

  • HB 668 · 2025 Regular SessionPublished

    Revising alcohol law to prohibit certain licensees from offering gambling

    How we got this date

    Published by the legislature: All Sections: 2025-05-08.

    How effective dates are worked out

  • HB 718 · 2025 Regular SessionPublished

    Generally revise laws relating to incarceration

    How we got this date

    Published by the legislature: All Sections: 2025-05-08.

    How effective dates are worked out

  • HB 793 · 2025 Regular SessionPublished

    Generally revise the membership of the POST Council

    How we got this date

    Published by the legislature: All Sections: 2025-05-08.

    How effective dates are worked out

Housing (3)

Mining and Drilling (3)

Government (2)

  • HB 563 · 2025 Regular SessionPublished

    Revise laws related to filing and participation in licensing complaint investigations

    How we got this date

    Published by the legislature: All Sections: 2025-05-08.

    How effective dates are worked out

  • HB 735 · 2025 Regular SessionPublished

    Generally revising alcohol laws

    How we got this date

    Published by the legislature: All Sections: 2025-05-08.

    How effective dates are worked out

Taxes (2)

  • SB 53 · 2025 Regular SessionPublished

    Revise income tax laws to provide conforming changes for prior legislation

    How we got this date

    Published by the legislature: All Sections: 2025-05-08.

    How effective dates are worked out

  • SB 544 · 2025 Regular SessionPublished

    Revise income tax laws for net operating loss carryovers

    How we got this date

    Published by the legislature: All Sections: 2025-05-08.

    How effective dates are worked out

Agriculture (1)

Climate (1)

  • SB 46 · 2025 Regular SessionPublished

    Increase registration fee for underground petroleum tanks

    How we got this date

    Published by the legislature: All Sections: 2025-05-08.

    How effective dates are worked out

Education (1)

  • HB 252 · 2025 Regular SessionPublished

    Create the student and teacher advancement for results and success act (STARS)

    How we got this date

    Published by the legislature: All Sections: 2025-05-08.

    How effective dates are worked out

Elections (1)

Technology (1)

  • HB 45 · 2025 Regular SessionPublished

    Generally revising telecommunications regulation laws

    How we got this date

    Published by the legislature: All Sections: 2025-05-08.

    How effective dates are worked out

Traffic (1)

  • HB 855 · 2025 Regular SessionPublished

    Establish FWP wildlife highway crossings and accommodation account

    How we got this date

    Published by the legislature: All Sections: 2025-05-08.

    How effective dates are worked out

Enacted, but not yet dated (4)

These laws' texts tie their dates to something outside the legislative record (Contingent), or not enough is recorded yet to give one (Unresolved). They may take effect May 8, 2025 too; the record doesn't say.

Show all 4
  • HB 447ContingentEnact the Respiratory Care Interstate CompactEffective on the date the compact is legislatively enacted into law by the seventh member state
  • HB 56ContingentEstablish ambulance provider assessment fee programApproval by the United States department of health and human services of all waivers and approvals necessary to implement the assessment fee and supplemental payments
  • SB 233ContingentAdopting the interstate massage compactCompact legislatively enacted into law by the seventh member state
  • SB 279ContingentAdopt the dietitian licensure compactThe compact has been legislatively enacted into law by the seventh member state.