NFL Betting 2026: AGA Warns of Stalled Growth Due to Prediction Markets

The American sports betting industry is approaching the 2026 NFL season with a sense of caution. While football remains the most popular sport for wagering in the United States, new data from the American Gaming Association (AGA) suggests that the era of explosive year-over-year growth may be coming to an end. The association estimates a legal handle of $29.5 billion for the upcoming season. Compared to last year's $29.4 billion, this represents nearly flat growth, a significant slowdown for an industry that has seen double-digit increases since 2018.

The primary culprit identified by the AGA is not a lack of fan interest but the rapid expansion of unregulated prediction markets. These platforms operate across all 50 states and Washington, DC, often utilizing legal loopholes to offer sports wagers under the guise of financial instruments. By doing so, they bypass the strict regulatory frameworks established in the 40 jurisdictions where sports betting is currently legal, as well as the prohibitions in states that have not yet authorized the practice.

Numbers and facts

The economic impact of these alternative platforms is substantial. According to AGA data, prediction markets like Kalshi and Polymarket have siphoned more than $1.3 billion in potential state gaming tax revenue since 2025. This loss directly affects public funding for education and infrastructure. Furthermore, the demographic data is concerning. Sports bets account for approximately 80% of the total volume on Kalshi, with an estimated $5.1 billion coming from users aged 18 to 20. This falls below the legal betting age of 21 in the majority of regulated US jurisdictions.

In contrast, the legal gaming industry continues to be a major economic driver, supporting 1.8 million jobs and contributing $18 billion annually in sports betting taxes. Licensed operators are held to high standards of accountability and player protection, requirements that unregulated prediction markets frequently ignore. The AGA highlights that these platforms misleadingly market gambling as an investment opportunity, which can be particularly dangerous for younger consumers.

Background

The landscape of American sports betting was transformed in 2018 when the Supreme Court struck down the federal ban. Since then, the market matured quickly, but the emergence of technological "backdoors" has created new challenges. Bill Miller, the President and CEO of the AGA, addressed these concerns as the new NFL season kicks off:

“These “prediction market” platforms are dangerously misleading consumers by marketing sports wagers as an investment, rather than what it is: entertainment. Kalshi and other “prediction markets” say they don’t need to follow state- and tribal- regulated sports betting laws or pay state gaming taxes. Their defiance means consumers, including teenagers and freshmen, placing bets without the protections, oversight, and accountability that the legal market provides.” - Bill Miller, President and CEO of the American Gaming Association

Why it matters for German players

For German residents, the situation in the US serves as a reminder of why a strong national license is vital. In Germany, the Interstate Treaty on Gambling 2021 (GlüStV 2021) ensures that players are protected by the GGL. While the US market struggles with unregulated platforms siphoning revenue, German players have access to a clear whitelist of legal providers. The strict monthly deposit limit of 1,000 euros and the central blocking system (OASIS) are tools that do not exist on the unregulated prediction markets currently causing issues in the United States.

What it means for GGL-licensed casinos

Licensed operators in Germany can take the US stagnation as a lesson in market integrity. The fact that the legal handle in the US has stalled at $29.5 billion due to "backdoor" betting highlights the need for a level playing field. GGL-licensed casinos and sportsbooks must continue to emphasize their role in consumer safety. While unregulated sites might offer higher limits or bypass age checks, they offer no legal recourse for unpaid winnings or problem gambling support. The AGA's struggle against prediction markets emphasizes that regulation is not just about taxes, but about maintaining a safe and fair environment for all participants.