A slew of new Missouri laws officially take effect today, Aug. 28, 2025. Here's a summary of five key bills that became law today.
More: Missouri becomes first state to repeal capital gains tax, at estimated $625 million cost
No more paid sick leave
HB 567 overturns most of Prop A's provisions — chief among them being the requirement for most employers to provide workers one hour of paid sick leave for every 30 hours worked.
Prop A also was set to bump Missouri's minimum wage to $15 an hour in 2026, with adjustments each year after that based on the Consumer Price Index. Although the $15 minimum wage increase still stands, HB 567 scraps any future adjustments based on inflation, meaning there wouldn't be any more increase to the state's minimum wage after 2026.
Fewer temporary tags
Aimed at reducing the amount of temporary license plate tags on the road, SB 28 allows the state to plan and implement a new system for car owners to pay sales tax on their vehicles.
Currently, Missouri drivers are issued a temp tag after buying a vehicle, with them being able to get a permanent license plate only after paying the vehicle sales tax. And, despite temp tags usually expiring after 30 days, some people just continue to use them long-term instead of paying sales taxes.
Under the new system, drivers will now have to pay the vehicle sales tax at the dealership before they get a temp tag.
Ending child marriage
HB 737 raises the state's legal minimum marriage age from 16 to 18. The previous law allowed 16-year-olds and 17-year-olds to marry anyone under 21 with parental consent.
The law also voids non-disclosure agreements in childhood sexual abuse cases, as well as blocks the state from seizing foster children's benefits to help pay for their care.
School cell phone ban
SB 68 mandates Missouri public schools create policies banning students from using their cellphones during the school day, including during mealtimes, time between classes and study hall. There are exceptions for students who use cell phones due to specific educational or health needs.
No more capital gains tax
HB 594 ends taxes on capital gains in the state, making Missouri the first state to fully exempt capital gains taxes. Under the law, residents can deduct any income reported as a capital gain to the federal government from their state income taxes. Capital gains are the profits derived from selling assets, like stocks and land, for more than they were originally purchased for.
The law also increases the income limits for a property tax credit for low-income seniors and people with disabilities, as well as ends sales taxes on diapers, incontinence supplies and feminine hygiene products.
This article originally appeared on Columbia Daily Tribune: Several new laws take effect in Missouri today: 5 key highlights
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