Missouri Betting

Missouri is the newest of the regulated online sports betting states covered here. Voters approved Amendment 2 on 5 November 2024, and wagering went live at midnight on 1 December 2025 under the Missouri Gaming Commission. The minimum age is 21 and a wager must be placed from inside the state. Two of the three markets tracked on this site point the other way: off-track pari-mutuel wagering on horse racing is a class D felony under Missouri statute, and the Attorney General has ordered six prediction-market platforms to stop taking sports wagers from Missourians.

Missouri Online Sportsbooks

The Commission announced the launch itself, and the wording is worth having exactly:

"The Missouri Gaming Commission announced that as of 12:00 a.m. on December 1, 2025, legal sports wagering is available to patrons in the state. Licensed operators with approved internal controls and house rules may offer live wagering. This significant milestone in Missouri is the result of voters' approval of Amendment 2 on November 5, 2024, which legalized sports betting statewide."

Three elements of that are doing real work. The authority is a constitutional amendment adopted at a statewide vote, not an ordinary bill. The go-live was conditional on each operator having its internal controls and house rules approved, which is why operators did not all appear on day one. And the authorisation is statewide, so unlike Louisiana there is no local opt-in layer to navigate. The launch announcement is published by the Commission.

Missouri Sports Betting Sites

The Commission set out the eligibility requirements for players in the same announcement: patrons "must be at least 21 years of age to establish an account and place sports wagers," patrons "must physically be in the state of Missouri to place a wager," and "[e]ach licensee must comply with responsible gaming rules and optional self-exclusion tools."

For checking a brand, the Commission maintains a report of approved sports wagering mobile licences. That report, headed "Approved Sports Wagering Mobile Licensees," is the register to consult before depositing anywhere, and it is the Commission's own record rather than a third party's summary. You can reach it at the Missouri Gaming Commission mobile operator report. Because Missouri opened so recently, the register is the only reliable guide to who is live at any given moment, and the operators recorded for Missouri on this page should be read against it rather than instead of it.

The practical reason to care is recourse. A dispute with a Commission-licensed operator over a graded wager or a withheld payout runs through a regulator that can compel an answer; a dispute with an unlicensed site does not, because nobody stands behind the site's decision but the site.

Missouri Sports Betting Laws

Amendment 2 wrote the rules into the Missouri Constitution rather than into a statute, which is why the age limit appears at Article III, section 39(g):

"A licensee shall not offer sports wagering to individuals who are under twenty-one years of age."

That is a duty on the licensee, not merely a prohibition on the player, which is why operators run identity and age verification before an account can be funded. The constitutional text is published by the Missouri Revisor of Statutes. The in-state requirement announced by the Commission is enforced by geolocation, so an account that works at home will decline a wager once you have crossed into Kansas, Illinois or Iowa — each of which has its own separate licensing regime.

Horse Racing Betting in Missouri

Horse racing is recorded as prohibited, and this is the sharpest divergence between Missouri's three markets. Section 313.660 of the Revised Statutes of Missouri is headed "Off-track wagering prohibited, penalty" and reads:

"No individual shall for a fee, directly or indirectly, accept anything of value to be wagered or to be transmitted or delivered for wager in any pari-mutuel system of wagering on horse racing or for a fee deliver anything of value which has been received outside of the enclosure of a race track holding a horse race licensed under sections 313.500 to 313.710 to be placed as wagers in the pari-mutuel pool within such enclosure."

The second subsection supplies the consequence: "Any individual violating the provisions of this section shall upon conviction be guilty of a class D felony." That is not a regulatory gap or an untested area. Missouri has made the acceptance or transmission of a pari-mutuel horse racing wager for a fee from outside a licensed track's enclosure a felony offence, which is why this site records the vertical as prohibited rather than grey. Readers should treat any site offering to take a Missouri horse racing account wager with that statute in mind. The section is at revisor.mo.gov.

Prediction Markets in Missouri

Prediction markets are recorded as prohibited, and the state has acted rather than commented. The Attorney General's office announced that it had ordered unlicensed prediction markets to cease and desist what it characterised as unlawful sports wagering:

"Facilitating such 'event contracts' constitutes unlicensed sports wagering under Missouri law. The Attorney General's Office sent cease-and-desist letters to six companies: Polymarket, Kalshi, Crypto.com, Novig, Underdog, and Robinhood."

The legal theory there matters as much as the list of names: the Attorney General is not treating these contracts as a novel financial product outside the gambling laws, but as sports wagering conducted without the licence Amendment 2 requires. Six companies named in a single action is an unusually broad enforcement step. The announcement is on the Attorney General's site.

Responsible Gambling in Missouri

Missouri's helpline is published by the Commission in the launch announcement: "For those who struggle with gaming addiction or are interested in responsible gaming resources, free counseling and information are available by calling 1-888-BETSOFF." The counselling is free, and the number is the state's own channel rather than an operator's.

Self-exclusion is also run centrally. The Commission states that it "offers voluntary self-exclusion, which legally prohibits individuals from placing sports wagers with any licensed operator in the state." The word "any" is the point: a single request reaches every licensed sportsbook rather than one account at a time, which makes it a far stronger tool than closing an individual account. Operators are separately required to comply with the Commission's responsible gaming rules and to make optional self-exclusion tools available inside their own products, so deposit and time limits are the first step and the Commission's list is the stronger one behind it.