Michigan’s internet gaming and sports betting operators earned $301.4 million in gross revenue in May 2025, according to the Michigan Gaming Control Board (MGCB). This is a 25.9% jump from $239.5 million in May 2024 and a 3.7% increase from April 2025’s $290.7 million.
The adjusted gross revenue reached $271.8 million, with iGaming at $236.2 million and sports betting at $35.6 million. These numbers show Michigan’s continued strength as a top online gambling market in the U.S.
Online casino gaming, including slots and table games, brought in $251.5 million, a 26.6% rise from $198.7 million in May 2024. The MGCB reported that May’s iGaming adjusted gross revenue was the second-highest ever, just behind March 2025’s $260.5 million. More players are engaging with online platforms, fueling this growth.
The table below highlights how sports betting also grew by almost 20%. The sports betting hold stayed steady at 12.95%, showing stable operator profits.
| Sports Betting Gross Receipts | Amount Wagered |
|---|---|
| $50 million | $386 million |
| +19.3% from May 2024 | +12.3% from May 2024 |
| +3.7% from April 2025 | -7.6% from April 2025 |
The revenue boom led to $51.1 million in state taxes. iGaming taxes made up $49.1 million, and sports betting added $2 million. Detroit’s three commercial casinos—MGM Grand Detroit, MotorCity Casino, and Hollywood Casino at Greektown—paid $13.4 million in taxes and fees. Tribal operators sent $5.8 million to their communities.
This is the breakdown of the casino market share per gaming entity:
The table below shows how Detroit’s casinos fared in revenue and the breakdown of where that revenue was generated.
| Total Casino Revenue | Revenue from Slots and Table Games | Revenue from Retail Sports Betting |
|---|---|---|
| $114 million | $112.7 million | $1.3 million |
The continued growth within the Michigan market is a top priority for lawmakers. One way to keep tax revenue strong is to limit the operations of unlicensed gambling sites that aren’t part of a negotiated agreement.
In a past statement in 2024, MGCB Executive Director Henry Williams said, “These illegal operations, whether offshore or operating without a Michigan license, exploit players and put them at risk. We will continue to take strong action to protect the integrity of Michigan’s gaming industry and to ensure that residents have access to safe, legal, and regulated gambling options.”
In June 2025, the MGCB sent cease-and-desist letters to five unlicensed online gambling sites: BoVegas Casino, BUSR, Cherry Gold Casino, Lucky Legends, and Wager Attack Casino. These sites took bets from Michigan residents without a license, breaking state laws like the Lawful Internet Gaming Act.
The sites have 14 days to stop or face legal action from the Michigan Attorney General.
With Michigan state’s focus on a fair gaming market, iGaming and sports betting industries are thriving. The state’s 15 licensed operators, both commercial and tribal, drive growth under safe regulations. The industry’s tax contributions support schools, infrastructure, and local communities.
As the only Midwestern state with fully legal iGaming, Michigan draws players from nearby states without as many options, boosting revenue when they visit. The state’s approach towards the industry offers a blueprint for others considering legal online gambling.
