How Online Gambling Is Changing the Sports Betting Industry

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$166.94 billion. That is the total U.S. sports betting handle for 2025, and roughly 95% of that volume was placed through smartphones and laptops rather than retail sportsbooks, according to American Gaming Association figures compiled by track360 (2026).

Over the past seven years, sports wagering in the United States has transformed from a regional Las Vegas enterprise into a mobile-first consumer industry with nationwide distribution. The same digital plumbing that operates a modern online casino now powers the sportsbook app on a fan’s device, and that single design shift explains most of what has changed about sports betting during the past five years.

This analysis maps the changes: market size, mobile dominance, in-play wagering, league partnerships, product mix, and consumer risk. All figures are sourced from the American Gaming Association, eMarketer, Optimove, the National Council on Problem Gambling, and Front Office Sports.

Key Takeaways
– U.S. sports betting handle reached $166.94 billion in 2025, with roughly 95% placed online (American Gaming Association via track360).
– Mobile delivered about 90% of gross gaming revenue in Q1 2024, and DraftKings and FanDuel together hold close to 80% of U.S. market share (SOFTSWISS; Flutter).
– In-play wagers made up 54% of all sportsbook bets globally and 52% in the United States in 2024 (Optimove Insights).
– Growth is decelerating, yet product depth is increasing through same-game parlays, micro-betting, and AI-driven odds.
– NCPG and Siena data show rising problem-gambling signals that the headline revenue numbers do not capture.

How Big Is the Online Sports Betting Market in 2026?

During 2025, the U.S. sports betting market produced $16.96 billion in operator revenue on $166.94 billion in total handle, up 22.8% and 11.0% year-over-year, respectively, according to American Gaming Association State of the States figures compiled by track360 (2026). Online delivery currently accounts for roughly 95% of total handle. That share means the retail sportsbook, once the only legally sanctioned venue throughout most of the country, has become a rounding error in the national totals.

Photo by Jacob Rice on Unsplash.

The global picture is larger. eMarketer estimates that U.S. online wagers alone reached roughly $172.55 billion during 2025 and will approach $204.20 billion by 2027. Flutter Entertainment, the parent of FanDuel, projects that the United States market will pass $39 billion in gross gaming revenue by 2030.

Readers should remain careful with the three competing metrics that dominate industry coverage. Handle represents the total amount wagered, including re-bet winnings produced during a single event. Revenue represents the amount sportsbooks retain after distributing payouts to winning participants, which arrives at a substantially smaller figure. Gross gaming revenue, commonly abbreviated as GGR, functions as a parallel accounting perspective employed mostly in European regulatory filings and operator filings. An identical market can appear dramatically different depending on which specific metric a headline selects.

According to American Gaming Association data compiled by track360 in 2026, U.S. sports betting handle hit $166.94 billion in 2025, with online wagers at about 95% of the total. Online delivery now functions as the market itself rather than one channel within it.

For readers tracking the league-by-league picture that sits underneath those totals, our NFL coverage and NBA analysis pages carry the weekly context.

Why Has Mobile Become the Center of Gravity for Sports Betting?

During Q1 2024, mobile accounted for roughly 90% of gross gaming revenue industry-wide, increasing from 86% a year earlier, according to a SOFTSWISS Q1 2024 report covered by AGBrief. That four-point share gain in a single year is the clearest sign of the shift from kiosk to app.

Three design choices explain the move. First, biometric login and built-in wallets cut the friction between a scoring play and a wager to a single tap. Second, push alerts pull users back into the app during live events, which is where sportsbooks earn their best margins. Third, personalization engines quietly surface props and parlays tuned to a user’s bet history.

Scale follows design. DraftKings reported 4.3 million monthly unique payers in Q1 2025, a 28% year-over-year gain, according to the company’s Q1 2025 earnings materials summarized on Seeking Alpha. Share has pooled as fast as the market has grown. Flutter Entertainment said in January 2025 that DraftKings and FanDuel together hold roughly 80% of the U.S. market, according to reporting on soloazar.com.

Photo by NordWood Themes on Unsplash.

SOFTSWISS reported in its Q1 2024 industry update that mobile delivered about 90% of gross gaming revenue industry-wide, up from 86% a year earlier. That jump is the clearest single sign that sportsbooks now live inside phones rather than beside televisions.

For a broader look at how fan behavior is evolving beyond the scoreboard, see our sports and lifestyle features.

How Is In-Play Betting Rewiring the Viewing Experience?

During 2024, in-play wagers represented 54% of all sportsbook bets globally and 52% within the United States, according to Optimove Insights’ review of roughly 3.8 million online bettors. Live markets have overtaken the pre-match wagering slip as the default consumption surface for an engaged user, and the operator economics have followed that migration.

Inside the NGSC Sports newsroom, our second-screen habit shifted visibly during the 2025 NFL season. Weeknight Monday Night Football became a two-device event even for staffers who never place a wager. One screen carried the broadcast; a second screen carried live odds, prop markets, and injury updates. The split-attention viewing pattern is no longer unusual, and it has become the operational baseline for weeknight professional sports consumption across our editorial team.

Operator revenue reflects that pull. bet365 reported in its latest annual report that in-play wagering made up 77% of sports betting revenue, up from 72% the prior year, as covered by Racing Post. Horowitz Research found in September 2025 that 45% of NFL viewers used interactive broadcast features, including in-game betting, during game windows, according to Señal News.

Photo by JESHOOTS.COM on Unsplash.

Dynamic odds pricing is the engine behind this consumption shift, and modern pricing models adjust lines several times per possession. That continuous adjustment gives bettors fresh entry points, and it gives sportsbooks a product whose operating margin compounds across the duration of a single contest.

Optimove Insights reported in 2024 that in-play wagers now account for 54% of all sportsbook bets globally and 52% in the United States. Live markets have become the majority product for most operators rather than a specialty surface.

For how this shift lands on the hardwood, see our NBA analysis coverage.

What Are Same-Game Parlays and Micro-Betting Doing to the Product Mix?

In May 2025, same-game parlays delivered a 35% operating margin across U.S. sports and were called the most profitable product across all U.S. sports by data provider Huddle. That particular statistic explains why same-game parlays now dominate pre-game promotional inventory, and it explains why operators systematically route new users toward them almost immediately following account registration.

A same-game parlay combines multiple correlated outcomes from one game, such as a quarterback’s passing yards, his top receiver’s touchdowns, and a final margin, into one ticket. Correlated legs make the ticket easier to picture. They also make it harder to price precisely, which widens the house edge.

Parlay use has grown with the product. NCPG’s NGAGE 3.0 survey, published in June 2025, reported that parlay wagers nearly doubled among sports bettors, from 17% in 2018 to 30% in 2024. Prop markets have scaled in parallel. Rotostreet maps hundreds of player-prop setups per NFL game across the major books.

Photo by Dave Adamson on Unsplash.

Micro-betting covers wagers settled in seconds on the next pitch, the next play, or the next possession, and it is the next product layer. The category is still novel in practice. A Jefferies survey summarized by Covers in August 2025 found that 36% of surveyed U.S. bettors have tried micro-betting, but only 5% use it as a main format. The trajectory is clear even if the current share is still small.

Data provider Huddle reported in May 2025 that same-game parlays produced a 35% margin across U.S. sports. That figure makes them the single most profitable product in the sportsbook catalog and the reason operators promote them so aggressively.

For fantasy context on the same props that drive these markets, see our fantasy and picks content.

How Are Leagues and Media Turning Betting Into a Revenue Line?

The NFL’s partnerships with Caesars, DraftKings and FanDuel are reported to total close to $1 billion combined over five years, according to Front Office Sports. League-level sportsbook deals have replaced the one-off casino sponsorship as the standard format across pro sports.

The pivot started early. In 2018, the NBA and MGM announced a three-year deal worth roughly $25 million. By 2025, every major U.S. pro league runs official sportsbook partner tiers that bundle data rights, logo placement, integrity services,s and broadcast tie-ins. Official data rights alone have become a sharply material revenue line for leagues. Integrity fees and sponsored broadcast segments add more.

Photo by Tim Mielke on Unsplash.

Sports media sits downstream of this change. Preview content, picks colum, columns, and fantasy coverage have become the discovery layer for sportsbook products, whether the outlet markets them that way or not. An informal NGSC Sports reader poll run through our newsletter in October 2025 (n = 184, self-selected readers) asked readers when they typically wager on sports. 41% said live during the game, 34% said before kickoff, and 25% said not at all. The sample is small and self-selected. Treat this as an editorial reader snapshot rather than a market study. The ordering, however, matches industry data showing live markets overtaking pre-match ones.

Per Front Office Sports, the NFL’s sportsbook partnerships with Caesars, DraftKings and FanDuel are reported at close to $1 billion combined over five years. Official betting rights now function as a direct league revenue line rather than a marketing line item.

For the league context behind those broadcast integrations, see our MLB previews and recaps.

Is the Growth Slowing, and What Comes Next?

In 2025, eMarketer projected that U.S. online wagers would grow from $172.55 billion in 2025 to $204.20 billion in 2027, still rising, but at a slower annual pace than the 2022 to 2024 stretch. Core legal markets are maturing, and the easy launch windows have mostly closed.

New York led all states with more than $2.5 billion in sportsbook revenue in 2025. Illinois, New Jersey, and Ohio each topped $1 billion in revenue, per American Gaming Association State of the States figures compiled by Legal Sports Report. The next major catalysts are launch events and legalization fights rather than organic adoption curves. Missouri launched legal mobile wagering on December 1, 2025. California and Texas, the two largest potential markets by population, remain unlegalized. Walnut Invest and other industry trackers list those two states as the single biggest open variable in any 2027 forecast.

Two newer competitive pressures are reshaping the outlook. Prediction markets are entering the same consumer space with event-contract products that sidestep state-by-state sportsbook licensing. Separately, AI-driven personalization, including recommended bet slips, dynamic promo pricing, and built-in responsible-gambling nudges, is the direction product teams are pushing in 2026.

eMarketer projected in 2025 that U.S. online wagers will grow from $172.55 billion in 2025 to $204.20 billion in 2027. That decelerating but still rising curve will cross the $200 billion mark before a single new mega-state opens.

For how these market shifts reach the fantasy-focused audience, see our fantasy and picks content.

What Is the Hidden Cost of the Online Gambling Boom?

In January 2025, a Siena College / St. Bonaventure University study found that 52% of online sports bettors had chased a losing bet, 20% said gambling had sharply hurt their finances, and 9% had sought help, according to reporting by GamblingHarm.org. Those numbers are the counter-narrative that most industry coverage underweights.

NCPG’s NGAGE 3.0 survey, published in June 2025, reported that online gambling among U.S. adults rose from 15% in 2018 to 22% in 2024. A Siena follow-up in early 2026 placed the share of Americans with an active online sports betting account at 27%. Chasing behavior rose to 60%. Help-seeking rose from 9% to 15%.

The most under-discussed finding comes from University of Washington researcher Ananthakrishnan. His work argues that the promised tax windfall from legal online sports betting has been partly offset by cannibalized state lottery revenue. In that view, the headline tax numbers that legalizing states quote sharply overstate the net gain to state treasuries. The pattern is clearest in states where online sportsbooks launched alongside a mature state lottery.

The product design that makes mobile sportsbooks engaging, such as instant settlement, push alerts, and frictionless top-ups, is the same design that compresses the time between an impulse and a loss. That compression is what the NCPG and Siena datasets are measuring.

A January 2025 Siena/St. Bonaventure study reported that 52% of online sports bettors had chased a bet, 20% said gambling had hurt their finances, and 9% had sought help. That is the quietest set of numbers in an otherwise loud industry year.

Frequently Asked Questions

How has online gambling changed sports betting?

Online delivery turned sports betting into a mobile-first, always-on product. Online wagers now make up roughly 95% of U.S. handle, which reached $166.94 billion in 2025, according to American Gaming Association data compiled by track360. In-play wagering accounts for 52% of all U.S. bets, according to Optimove Insights.

How big is the online sports betting market in 2026?

U.S. 2025 total handle was $166.94 billion with $16.96 billion in operator revenue, per American Gaming Association State of the States figures compiled via track360. eMarketer projects U.S. online wagers will climb from $172.55 billion in 2025 to roughly $204.20 billion by 2027, with slowing but still positive annual growth.

Who are the biggest online sportsbooks in the U.S.?

DraftKings and FanDuel together hold roughly 80% of the U.S. market, according to Flutter Entertainment’s January 2025 estimate reported by soloazar.com. FanDuel led sports-only share at 39.3% to DraftKings’ 34.1% in August 2025, according to Eilers and Krejcik data reported by Front Office Sports.

Is online sports betting growing or slowing down?

Growth is slowing but still positive. U.S. handle grew 11.0% in 2025 compared to larger double-digit jumps in prior years. Revenue grew 22.8% as the industry hold rate rose to roughly 10%, according to American Gaming Association State of the States figures compiled by track360.

What are the risks of the online sports betting boom?

NCPG’s NGAGE 3.0 survey found that online gambling rose from 15% in 2018 to 22% in 2024. A January 2025 Siena/St. Bonaventure study reported that 52% of online sports bettors had chased a losing bet and 20% said gambling had hurt their finances, according to GamblingHarm.org.

The Takeaway for Sports Fans, Media and Leagues

The online gambling boom did not simply add a channel to sports betting. It reshaped the industry around that channel.

Online delivery equals sports betting: roughly 95% of U.S. handle is placed through mobile apps.
Mobile and live-betting products have restructured both the viewing experience and the operator revenue mix.
League and media partnerships, with the NFL’s agreements alone totaling close to $1 billion over five years, have transformed betting into a stand-alone league revenue line.
Aggregate expansion is decelerating, yet product depth is increasing through same-game parlays, micro-betting and AI-driven odds pricing.
The other side of the ledger, including accelerating problem-gambling signals and cannibalized state lottery revenue, will represent a louder 2026 narrative than it was during 2025.