New Missouri laws taking effect August 28, 2025
42 laws take effect August 28, 2025.
Of the 165 bills enacted since 2025, 164 have an effective date and 1 doesn'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 11:35 p.m. EDT.
Government (10)
HB 145 · 2025 Regular SessionPublished
Modifies provisions of the sunshine law
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.HB 147 · 2025 Regular SessionPublished
Relating to retirement
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.Parts of this act take effect on other dates.
HB 199 · 2025 Regular SessionPublished
Modifies provisions relating to political subdivisions
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.Parts of this act take effect on other dates.
SB 1 · 2025 Regular SessionPublished
Modifies provisions relating to county officials
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.SB 2 · 2025 Regular SessionPublished
Modifies provisions relating to financial statements of certain local governments
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.SB 221 · 2025 Regular SessionPublished
Modifies the standard of review for agency interpretation of statutes, rules, regulations, and subregulatory documents
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.SB 271 · 2025 Regular SessionPublished
Modifies provisions relating to emergency services
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.SB 396 · 2025 Regular SessionPublished
Authorizes the board of trustees of a consolidated public library district to change the dates of the fiscal year
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.SB 43 · 2025 Regular SessionPublished
Modifies provisions relating to protection of vulnerable persons
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.Parts of this act take effect on other dates.
SB 47 · 2025 Regular SessionPublished
Amends Supreme Court Rule 52.08 relating to class actions
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.
Education (7)
HB 419 · 2025 Regular SessionPublished
Relating to education
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.SB 150 · 2025 Regular SessionPublished
Creates, repeals, and modifies provisions relating to workforce development initiatives
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.SB 160 · 2025 Regular SessionPublished
Establishes provisions relating to educational institutions
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.SB 49 · 2025 Regular SessionPublished
Authorizes school districts and charter schools to employ or accept chaplains as volunteers
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.SB 63 · 2025 Regular SessionPublished
Creates and modifies provisions relating to the participation of certain students in nontraditional educational settings
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.SB 68 · 2025 Regular SessionPublished
Creates, repeals, and modifies provisions relating to elementary and secondary education
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.Parts of this act take effect on other dates.
SCR 3 · 2025 Regular SessionDerived
Modifies the statewide mission of Missouri Southern State University
How we got this date
Mo. Const. art. III §§20(a), 29: the text sets no date of its own, so the state's default rule applies.
Constitutional adjournment (May 30) May 30, 2025 → + 90 days Aug 28, 2025
Healthcare (4)
HB 121 · 2025 Regular SessionPublished
Establishes the "Safe Place for Newborns Fund" for the installation of newborn safety incubators
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.Parts of this act take effect on other dates.
HB 262 · 2025 Regular SessionPublished
Creates provisions relating to alternative therapies for veterans with PTSD and traumatic brain injuries
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.SB 218 · 2025 Regular SessionPublished
Modifies provisions relating to court operations
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.Parts of this act take effect on other dates.
SB 79 · 2025 Regular SessionPublished
Modifies provisions relating to health care
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.
Taxes (4)
HB 1041 · 2025 Regular SessionPublished
Modifies inspection and gauging fees imposed on barrels of malt liquor
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.Parts of this act take effect on other dates.
HB 594 · 2025 Regular SessionPublished
Relating to taxation
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.SB 145 · 2025 Regular SessionPublished
Modifies provisions relating to the taxation of certain businesses
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.SB 4 · 2025 Regular SessionPublished
Modifies and creates new provisions relating to utilities
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.
Traffic (4)
HB 296 · 2025 Regular SessionPublished
Modifies provisions relating to school bus endorsements
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.HB 810 · 2025 Regular SessionPublished
Designates the "Lloyd Memorial Highway" in Newton County
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.SB 28 · 2025 Regular SessionPublished
Modifies provisions relating to transportation
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.Parts of this act take effect on other dates.
SB 3 · 2025 Regular SessionPublished
Modifies or enacts provisions relating to Department of Revenue fee offices
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.
Agriculture (2)
HB 169 · 2025 Regular SessionPublished
Modifies provisions relating to cotton trailers
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.SB 105 · 2025 Regular SessionPublished
Modifies provisions relating to invasive plants
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.
Civil Rights (2)
HB 737 · 2025 Regular SessionPublished
Modifies provisions relating to the protection of children
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.SB 348 · 2025 Regular SessionPublished
Enacts provisions relating to state designations
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.
Housing (2)
HB 595 · 2025 Regular SessionPublished
Modifies provisions relating to real estate transactions
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.HB 596 · 2025 Regular SessionPublished
Modifies a provision relating to brokerage services
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.
Public Lands (2)
HB 105 · 2025 Regular SessionPublished
Authorizes the conveyance of certain state property in Miller County
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.SB 82 · 2025 Regular SessionPublished
Creates provisions relating to water preservation in the state
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.
Climate (1)
HB 516 · 2025 Regular SessionPublished
Modifies criteria of hazardous waste investigations and increases the hazardous waste fund appropriations
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.
Crime (1)
SB 98 · 2025 Regular SessionPublished
Modifies various provisions relating to financial institutions
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.
Elections (1)
SB 152 · 2025 Regular SessionPublished
Creates new provisions relating to foreign spending in state ballot measure elections
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.
Finance (1)
HB 754 · 2025 Regular SessionPublished
Modifies standards for certain financial organizations
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.Parts of this act take effect on other dates.
Technology (1)
SB 133 · 2025 Regular SessionPublished
Modifies and creates new provisions relating to underground facilities
How we got this date
Published by the legislature:
Effective date: 2025-08-28
.
Enacted, but not yet dated (1)
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 August 28, 2025 too; the record doesn't say.
Show all 1
- HB 1 (ES2)ContingentCreates provisions for redistricting federal congressional seatsEffective beginning with the election of the 120th Congress