Is online gambling legal in Missouri?

1. 1Mo. Const. art. III, s. 39(g) (sports wagering, adopted 5 Nov 2024)
2. 2RSMo 313.905 (fantasy sports: definitions)
3. 3MGC consumer protection alert, 23 Apr 2025: online casinos
4. 4Missouri AG press release, 18 Sep 2026: unlicensed prediction markets ordered to cease and desist

The minimum age on record for gambling in Missouri is 21+. The legal age for casino gambling and sports betting is 21. For the state lottery and charitable games like bingo, the minimum age is 18.

Gambling winnings are taxed as ordinary income, federally and in Missouri; there is no separate rate. Missouri's top income tax rate is 4.7% for tax year 2025. A sportsbook must withhold 24% federal tax only on a big win: one that is more than $5,000 above the stake and at least 300 times the stake. Missouri withholds 4% only on state lottery prizes of $600 or more.

Always verify a casino holds a valid Missouri Gaming Commission licence before depositing.

Prominent operators in Missouri

If a site isn't on the regulator's licensee register, ask the regulator before you play: an unlisted site is usually not licensed here (a register can lag behind a new licence). An unlicensed site is outside the regulator's supervision, so you cannot complain to the regulator about it.

• Self-exclusion: 5 years. One list bars you from sports betting at every licensed operator, online and in person ↗
• Take a break: 72 hours to 1 year. You choose the length, and it cannot be shortened once set ↗
• Withdrawals: 5 business days. Once you are verified, unless the operator suspects fraud ↗
• Helpline: 1-888-BETSOFF. The Gaming Commission's problem-gambling line ↗

1. 1

   1. Contact the Operator Directly

   The player submits a complaint under the procedure in the licensee's house rules, which the licensee's app must also offer on its support page. A sports wagering licensee must respond within ten calendar days.

2. 2

   2. File a Complaint with the MGC

   If the issue cannot be resolved with the operator, a player can submit a Sports Wagering complaint to the Missouri Gaming Commission through its online form; submissions may be anonymous. The licensee must tell the patron how to file a written complaint with the Commission.

3. 3

   3. No Independent Appeal Body

   No independent ADR provider or ombudsman is required or provided, so the route ends with the Commission. For fantasy sports complaints the Commission assigns an agent to investigate and sends the player a summary of its findings.

• ✓
  Check the Commission's Contact Link

  No rule requires an operator's advertising to show a licence number or a Commission logo. A licensed mobile platform must give the patron the Commission's contact information, including a link to its website, and its support page must give the means to submit a complaint.

• ✓
  Check the MGC Public Register

  The Commission publishes reports of approved sports wagering mobile, retail and supplier licensees, each showing Active or Temporary status, a list of licensed fantasy sports operators, and a lookup for the Self-Excluded Persons (SEP) List. On 6 October 2026 the mobile report listed 8 licences, 4 Active and 4 Temporary.

• ✓
  Confirm Geolocation Checks

  A licensed online operator must use commercially reasonable geolocation and geofencing technology. The platform checks the patron's location before the first wager after login and at least every 30 minutes after that, and must refuse a wager if it detects an attempt to defeat location detection.

• ✓
  Look for Responsible Gambling Tools

  A licensed platform must let a patron set limits on deposits, wagers and time, and suspend the account for a period of 72 hours to one year. It must prominently show compulsive gaming information with a link to the Commission's SEP List application, and before login the app must show how to get help with a gambling problem. The Commission's helpline is 1-888-BETSOFF.

• ✓
  Use Secure, Familiar Payment Methods

  The rules list credit or debit cards, gift cards, verified reloadable prepaid cards, ACH transfers, online and mobile payments through a licensed money transmitter, and wire transfers. Cryptocurrency is not on the list and the Commission declined to add it when it adopted the rule. Wagers are accepted in US currency only.

• Myth

  My winnings aren't taxed unless I get a W-2G form from the sportsbook.
  Reality

  False. Gambling winnings are taxable income federally, and because Missouri taxable income starts from federal adjusted gross income, they flow into the Missouri return. All winnings must be reported, whether or not you receive a tax form.

• Myth

  It's legal to play on offshore casino sites because they accept Missouri players.
  Reality

  False. Missouri has no licence for online casinos. The Gaming Commission has told the public that online casinos are illegal and that it cannot resolve complaints against such sites.

• Myth

  Since sports betting is legal, online poker and slots must be legal too.
  Reality

  False. Online sports wagering is licensed under Article III, section 39(g), and fantasy sports under their own Act. Online casino, poker and bingo have no authorising law: section 39(e) allows games of chance only on excursion gambling boats and floating facilities.

What you can expect from a licensed site's offers in Missouri. The rules operators must follow are on the operator page.