There is no single defensible “online casino market size” unless the metric and scope are defined first. Public estimates that look contradictory often measure different things: operator GGR, all online gambling, casino-only revenue, regulated markets, offshore activity, or supplier revenue.
THEMP conclusion: use one number only after stating the market boundary. For a global macro view, H2’s online GGR series is useful. For “online casino” specifically, regional regulator data and casino-product series are more transparent than broad commercial market reports with proprietary definitions.
What counts as the online casino market?
Four choices materially change the answer. First, product scope: casino-only can mean slots, live casino and RNG table games, while “online gambling” typically also includes sports betting, poker, bingo and sometimes lottery. Second, revenue metric: GGR/GGY is stakes minus winnings, whereas wagering/handle is the much larger amount staked. Third, regulatory scope: some global datasets include offshore activity; regulator statistics cover licensed activity only. Fourth, geography and currency: global, Europe, Great Britain and a U.S. state cannot be summed without normalization.
| Dataset | Scope | Published figure | What it is useful for |
|---|---|---|---|
| H2, Apr 2026 | Global online gambling GGR, onshore + offshore | $365bn 2026e; $530bn 2030e | Global channel-size benchmark |
| EGBA/H2 | EU-27 + UK, all online gambling | €54.8bn 2026e | Comparable European product/channel series |
| UKGC | Licensed Great Britain remote casino | £5.7bn GGY, FY Apr 2025–Mar 2026 | Official regulated casino benchmark |
| Evolution/H2 | Global casino mix | Online = 44% of total casino in 2025 | Channel mix; not an independent regulator total |
e = estimate/forecast. Currency and scope differ; rows are intentionally not added together.
Global online is becoming the majority channel
H2’s April 2026 update places global online gambling GGR at $293 billion in 2024, or 41% of total gambling GGR, and forecasts $365 billion for 2026. Its model reaches $530 billion in 2030, when online represents 51% of global gambling GGR. H2 expects the online share to cross 50% for the first time in 2029. This is an all-product online series, so it is a ceiling for any casino-only definition rather than a casino-market number by itself.
H2 also separates onshore and offshore online activity. In its model, onshore regulated online GGR was $132 billion in 2024, 45% of online GGR, compared with 27% in 2015. That distinction matters because many regulator datasets describe only onshore licensed activity, while global commercial forecasts may model a broader universe.
Europe gives a clearer casino-only product split
EGBA’s 2025 market publication, based on H2 data, estimated EU-27 + UK online gambling GGR at €47.9 billion for 2024 and €54.8 billion for 2026. Within the 2024 online total, casino games were the largest product at €21.5 billion, or 45% of online GGR. The same series forecasts total European online gambling at €66.8 billion by 2029.
This does not mean the global online casino market is €21.5 billion. It means casino represented €21.5 billion in the specific EU-27 + UK model for 2024. The explicit geography, product set and GGR definition make the figure auditable and comparable over time.
Great Britain shows why official data should anchor the model
The UK Gambling Commission reported £8.3 billion of remote casino, betting and bingo GGY for the financial year April 2025 to March 2026. Remote casino alone generated £5.7 billion, with slots accounting for £4.8 billion. This is a licensed-market measurement rather than a modeled global estimate.
That official series is especially useful as a calibration point: it shows how large a mature, high-channelization remote casino market can be under a clearly defined reporting regime. It should not be mechanically scaled to other countries because product rules, taxation, channelization and reporting conventions differ.
Why commercial “market size” reports can differ by an order of magnitude
Commercial research vendors sometimes publish online-casino totals far below broader H2-derived estimates. The gap is not necessarily an arithmetic error. A vendor may count software or service revenue, a limited set of regulated markets, a narrower consumer-spend definition, or exclude offshore activity. If the methodology is not public enough to reproduce the boundary, the number should be treated as a proprietary benchmark rather than a universal market total.
Selection rule: before using any market-size number, record: metric, included products, regulated/offshore treatment, geography, currency, base year and whether the value is reported or forecast. If one of those fields is unknown, do not merge it with another series.
What can reasonably be said about 2026?
- Online gambling is still growing faster than the land-based channel in major public forecasts.
- Casino remains the largest online product in the EU-27 + UK dataset.
- Regulated U.S. iGaming and mature European remote-casino markets continue to post material revenue, but jurisdiction coverage remains incomplete globally.
- The regulated/onshore share of global online activity is increasing in H2’s model, although offshore measurement is inherently less direct.
Limitations
This report does not present a single THEMP proprietary global casino total because the public evidence does not support one without additional paid datasets and a reproducible country-by-country model. Forecast values are not observed results. H2 and EGBA figures are model outputs, while UKGC figures are regulatory returns. They answer different questions and are labelled accordingly.
Method used by THEMP
We prioritize regulator statistics for observed jurisdiction results, then industry-association and public-company disclosures for adjacent context, and finally market-model forecasts for global extrapolation. We do not average incompatible estimates. A figure enters a comparison table only when its metric and scope are known.
External sources are cited for data provenance. THEMP’s interpretation and comparison rules are editorial analysis, not claims made by the cited organizations.