Michigan iGaming Revenue hits $302.7 Million in September
Michigan’s online gambling revenue generated $302.7 million in September, driven largely by online casino gaming.
The figures, published by the Michigan Gaming Control Board (MGCB), show a 16% increase in revenue compared to the same period last year. Michigan online casinos brought in $259.1 million in gross receipts, up 27.9% year-on-year, though down slightly by $4 million from August.
By contrast, Michigan sports betting receipts declined to $43.6 million, down 25.3% compared to September 2024 and 11.5% lower than in August this year.
Adjusting for Michigan sportsbook promos and other deductions, online casino adjusted gross receipts (AGR) reached $243.4 million, a 33.5% annual increase. In comparison, sports betting AGR fell sharply to $13.2 million, a 52% year-on-year decline and a 61.3% drop from August.
Despite the dip in revenue, sports betting activity actually rose in September.
The total betting handle for September reached $524.3 million, representing a 16% increase compared to the same month in 2024 and nearly $200 million higher than August 2025. This indicates that heightened bettor activity has not translated into higher profitability for operators.
In total, the 15 commercial and tribal gaming operators in Michigan paid $51.6 million in taxes and regulatory fees to the state in September. An additional $6.1 million was submitted by tribal operators to their respective governing authorities.
Warning over prediction markets
Meanwhile, the MGCB has issued a formal warning to all licensed best sportsbooks operators in the state, cautioning that their involvement in prediction markets could put their licences at risk.
In a memo circulated earlier this month, MGCB Executive Director Henry Williams outlined concerns regarding event-based trading platforms that allow users to buy and sell positions on the outcomes of future events. These platforms, the MGCB warned, may fall outside the bounds of Michigan’s gaming laws and licensing structure.
The memo highlighted that any involvement in such markets, even in other jurisdictions where regulators have objected to them, could impact a licensee’s ability to operate in Michigan.
“Any involvement in the offering of sporting event contracts, directly or via an affiliate, key person, related business entity, or other association, will have implications relative to your licensure in Michigan,” it read.
Michigan joins Arizona and Ohio in formally addressing the legal and regulatory risks associated with prediction markets, particularly those involving sports betting.
The move underscores growing concerns among regulators about the intersection of sports wagering and financial-style trading, as well as the resulting integrity and compliance risks that extend across state lines.
