Gross Gaming Revenue (GGR) is the number every operator, regulator and investor quotes first, and it is also the most misunderstood figure in the industry. GGR is not profit. It is turnover minus player winnings, and from that single figure a cascade of taxes, marketing spend, platform fees and compliance costs is deducted before anything reaches an operator’s bottom line. Using data from the American Gaming Association, the UK Gambling Commission and a listed operator’s own SEC filings, this article traces a dollar of GGR from the point it is recorded to what, if anything, is left over.
Key takeaways
- GGR equals total stakes minus winnings paid out. It is the “sales” line for a gambling business, not the “profit” line.
- In 2025, the US commercial gaming industry generated $78.72 billion in GGR and remitted $18.09 billion in direct gaming taxes — an implied effective rate of roughly 23%.
- At a large listed operator (Flutter Entertainment), cost of sales alone consumed 55% of revenue in fiscal 2025, before sales and marketing expenses of $3.68 billion were even applied.
- Revenue concentration matters as much as the headline total: academic research puts the share of gambling expenditure coming from problem and at-risk gamblers as high as half in some datasets.
- What is left after taxes, bonuses, acquisition costs and platform fees — the real margin — is usually a fraction of the reported GGR figure.
Table of contents
What GGR actually measures
Gross Gaming Revenue is the total gaming revenue recorded by an iGaming operator over a defined period after subtracting winnings awarded or credited to players on settled bets or game rounds.
It represents the revenue retained by an operator before operating expenses, taxes, bonuses, and other deductions are applied.
Crucially, as the Corporate Finance Institute notes,
gross gaming revenue is equivalent to “sales” or “revenue” – not “profit” or “earnings”.
The confusion usually starts with terminology.
Turnover is the total amount wagered, while GGR is turnover minus winnings paid out.
A sportsbook can post enormous turnover on a Sunday of NFL games and still report modest GGR if pricing and results favored bettors. Regulators outside the US often use a different label for the same underlying calculation:
the UK Gambling Commission asks operators to report Gross Gambling Yield rather than GGR, with a statutory formula broadly defined as stakes plus other qualifying amounts, minus prizes or winnings.
The label changes; the mechanics rarely do.
For context on how this top-line figure is expected to grow globally, see our earlier analysis in the $255 billion forecast for 2026–2035 online gambling growth. This piece focuses on what happens to that revenue once it lands on an operator’s books.
The first cut: house edge and player payouts
GGR is already a net figure — player winnings are removed before the number is reported — but the size of that first cut still varies enormously by product and jurisdiction. Blask’s worked example illustrates the arithmetic simply:
if casino players wager $1,000,000 during a month and receive $940,000 in winnings, the operator’s GGR for the period is $60,000.
The operator retained six cents in GGR for every dollar staked during that period.
This retained share is often called hold, and
GGR margin is often called hold in sports betting and some casino reporting.
Hold is far from static.
It can fluctuate sharply over short periods because of player outcomes, jackpots, event results, product mix, and statistical variance,
which is why quarter-to-quarter GGR swings at sportsbooks say more about game results than about underlying customer growth. Slot-driven online casino products tend to be more predictable: RTP is fixed by the game design, so hold converges toward the theoretical house edge over large sample sizes, while sportsbook hold is structurally noisier because it depends on pricing decisions and real-world outcomes.
How much governments take
Once GGR is recorded, the first claim on it in almost every regulated market is the tax authority. In the United States,
the U.S. commercial gaming industry reached a record high in 2025, generating $78.72 billion in gross gaming revenue, a 9.2 percent increase over the previous year, according to the American Gaming Association’s Commercial Gaming Revenue Tracker.
Against that total,
legal, state-regulated gaming generated $18.09 billion in gaming tax revenue in 2025, up 15.1 percent over the prior year.
Digital products carried a heavier relative tax load:
iGaming reached $10.74 billion in revenue, up 27.6 percent, and delivered $2.59 billion in taxes, a 36.9 percent increase.
Divide those figures and the implied national tax burden becomes visible: roughly 23% of total commercial GGR and closer to 24% of iGaming GGR flowed to state and local governments in 2025 — before any operator has paid a single dollar in marketing, platform fees, salaries or federal tax. In Great Britain, the regulator reports the equivalent figure directly:
the customer-facing gambling industry in Great Britain generated a total Gross Gambling Yield of £17.5 billion, a 4.4 percent increase on the previous financial year.
Lottery products inflate that headline number, since
National Lottery revenues totalled £3.47bn, accounting for roughly 20 per cent of overall GGY.
Strip that out and
GGY excluding the National Lottery and society lotteries reached £13.2bn, representing year-on-year growth of 4.7 per cent.
For more on how licensing regimes shape this tax exposure market by market, see our licensing and jurisdictions hub.
| Market | GGR / GGY | Tax remitted | Implied tax share |
|---|---|---|---|
| US commercial gaming (all verticals, 2025) | $78.72bn | $18.09bn | ~23% |
| US iGaming only (2025) | $10.74bn | $2.59bn | ~24% |
| Great Britain, all gambling (FY2025/26) | £17.5bn | Reported separately by sector | Varies by duty band and vertical |
The cost of acquiring and keeping players
Tax is only the first deduction. The next major line is marketing — bonuses, affiliate commissions, paid media and CRM — and it is large enough to show up clearly in a listed operator’s income statement. Flutter Entertainment’s FY2025 10-K filed with the SEC shows
sales and marketing expenses increased by 15%, to $3,678 million for fiscal 2025 from $3,205 million for fiscal 2024.
On revenue of roughly $16.4 billion for the year, that puts marketing spend at close to a fifth of top-line revenue for one of the largest listed operators in the world, and the company’s own quarterly disclosures confirm the order of magnitude: in the fourth quarter,
sales and marketing expenses increased by 13% year-over-year, and as a percentage of revenue, sales and marketing reduced by 80bps to 16.3%, driven by savings in APAC and other regions.
Cost of sales — the line that bundles gaming duties, payment processing, platform revenue shares and promotional free bets — is larger still.
Cost of sales increased by 22%, to $8,979 million for fiscal 2025 from $7,346 million for fiscal 2024, and cost of sales as a percentage of revenue increased from 52% for fiscal 2024 to 55% for fiscal 2025.
Add marketing on top of that and a single large, diversified operator is already allocating more than three-quarters of every revenue dollar before technology, compliance headcount, G&A or corporate overhead are even counted. Our payments and technology hub covers how processing-fee structures and crypto rails affect this cost line at smaller, less diversified operators.
Who actually generates the GGR
A market-level GGR figure hides how concentrated that revenue is among a small share of players — a fact with direct implications for how sustainable an operator’s revenue base really is. A population-based Finnish study linking survey data to gambling registers found that
of the 4.2% of gamblers that produced 50.0% of the total gambling expenditure in 2016, 33.1% of that expenditure was produced by those with a gambling problem and 43.3% by those with an at-risk gambling pattern.
In other words, roughly three-quarters of the spending from the top 4% of players came from people already showing risky or harmful gambling patterns.
US state-level analysis reaches similar territory. A Minnesota Department of Human Services report, drawing on prevalence research from multiple jurisdictions, states that
studies in other jurisdictions estimate that between 15 and 33 percent of gambling revenue is generated by individuals with problem gambling.
That range matters for anyone evaluating an operator’s growth quality: GGR growth driven by broad-based, low-intensity play is a fundamentally different signal than GGR growth concentrated among a shrinking pool of high-value accounts. Our fair play and responsible-gambling hub covers how we weight harm-reduction signals when scoring operators, and our demographics hub looks at who is actually betting across regulated markets.
What is actually left: the real margin
Stack the deductions and the gap between “GGR” as a headline and “profit” as a business outcome becomes obvious. Take the US commercial market: of $78.72 billion in GGR, roughly $18.09 billion left the industry as direct gaming tax in 2025 alone — before a single marketing dollar, platform fee or payroll cost was applied. At the operator level, Flutter’s own disclosures show cost of sales at 55% of revenue and sales and marketing near a fifth of revenue in the same fiscal year, and even in a quarter where trading conditions were favorable, the company reported
an adjusted EBITDA margin of 9.7% in the first quarter of 2025
— a single-digit-to-low-double-digit margin, on an adjusted basis, at one of the best-capitalized and most diversified operators in the industry. Smaller, single-market operators carrying higher relative marketing and platform costs typically see thinner margins still.
This is also why GGR alone is a poor proxy for an operator’s financial health or, by extension, its incentive structure toward players. An operator growing GGR by chasing a small base of high-value, high-risk accounts faces a very different regulatory and reputational risk profile than one growing GGR through broad, low-intensity acquisition — even if the reported top-line number looks identical. Our scoring system and algorithmic weights hub explains how signals like bonus structure, payout transparency and marketing intensity feed into that distinction, alongside the broader macroeconomic context covered on the iGaming economics hub.
Frequently asked questions
What is the difference between GGR and NGR?
GGR is stakes minus player winnings — the top-line figure regulators and investors quote first. Net Gaming Revenue (NGR) subtracts additional costs such as bonuses, promotional credits and, in some reporting frameworks, gaming duty, giving a closer approximation of revenue the operator can actually deploy toward operating costs and profit.
Is GGR the same as a casino’s profit?
No. GGR sits above the income statement, before taxes, marketing, platform fees, payment processing and staff costs are deducted. A large GGR figure can still coexist with a thin or negative operating margin once those layers are applied, as shown by even the largest listed operators.
Why do regulators use GGR instead of turnover to calculate tax?
Turnover (total amount wagered) does not reflect economic activity in the same way GGR does, because most wagered money is simply returned to players as winnings. Taxing turnover directly would create absurd effective rates on high-volume, low-margin products, so almost every regulator taxes the retained GGR figure instead.
How much of GGR typically ends up as tax?
It varies sharply by jurisdiction and product, but US 2025 data implies roughly 23% of total commercial GGR and about 24% of iGaming GGR specifically was remitted as direct state and local gaming tax, based on American Gaming Association figures. This excludes corporate income tax and other non-gaming-specific levies.
Does a high GGR always signal an operator worth avoiding?
Not necessarily. High GGR can reflect scale, popularity or a broad, healthy player base. The more useful question is how that GGR was generated — whether it is spread across many moderate-spending players or concentrated among a small group showing at-risk patterns, which research suggests can account for a disproportionate share of expenditure.
Methodology
For topics involving revenue structure, GamblScout.com’s algorithm draws on publicly filed operator financial statements, regulator-published GGR/GGY statistics, and government or peer-reviewed research on spending concentration, rather than operator marketing claims. Figures are cross-checked against original filings and regulator datasets before being used to inform our scoring of marketing intensity, payout transparency and player-base health, as detailed on our data scraping and technical engine hub.
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