Business
How iGaming Companies Make Money
Last updated 3 August 2026
The economics behind online gambling: margins, hold, the house edge, and how operators, suppliers and affiliates each earn their share of the same player spend.
Online gambling looks simple from the outside and is anything but underneath. Several different business models sit on top of the same player spend, each earning money in a different way. This guide explains the economics.
The core idea: the house edge
Every gambling product is built with a mathematical edge in the operator's favour. Over enough bets, the operator keeps a predictable share of everything staked. Two terms describe this:
- House edge is the theoretical share of each stake the operator expects to keep, built into the game's design or the odds.
- Hold, or margin, is the share it actually keeps in practice over a period.
The edge is small per bet but reliable in aggregate, which is why volume matters so much.
GGR and NGR: the revenue line
- Gross Gaming Revenue (GGR) is total stakes minus winnings paid to players. It is the industry's top line.
- Net Gaming Revenue (NGR) is GGR minus bonuses and certain costs. It is closer to what the operator actually earns before tax and overheads.
Bonuses are a real cost, not just marketing gloss, which is why the gap between GGR and NGR matters so much to profitability.
Sportsbook versus casino economics
The two headline products earn very differently:
- Casino and slots carry a higher, steadier margin. The edge is fixed in the maths, so revenue is relatively predictable.
- Sportsbook runs on a thinner margin and is more volatile. A run of favourite-friendly results can dent hold in the short term, even though the edge holds over time.
This is why casino revenue is often prized for stability while sportsbook is prized for acquisition and volume.
How the rest of the chain earns
Operators are only one part of the money flow:
- Platform and B2B providers charge operators a fee or a revenue share for the technology they run on.
- Game studios license their content to operators, typically for a share of the revenue that content generates.
- Data and sports-data suppliers sell the odds, feeds and integrity services betting depends on.
- Affiliates send players to operators and are paid either a one-off cost-per-acquisition, a revenue share of what those players lose, or a hybrid of both.
Each layer takes a slice of the same underlying player spend, which is why owning more than one layer is so valuable.
Why player lifetime value drives everything
Because acquiring players is expensive, the number that ultimately decides profitability is lifetime value: how much net revenue a player generates over their whole relationship with the operator, against the cost of acquiring and retaining them. Bonuses, loyalty schemes and reactivation campaigns are all bets on lifetime value.
The takeaways
- The house edge makes revenue predictable at scale, not on any single bet.
- Bonuses are a genuine cost; watch the gap between GGR and NGR.
- Casino margin is steady, sportsbook margin is thin and volatile.
- Suppliers, studios and affiliates all earn from the same spend the operator does.
- Lifetime value against acquisition cost is the number that decides who is actually profitable.
Regulation, tax and market figures move quickly, sometimes mid-year. Where this guide gives a number, treat it as a starting point and confirm the current position with the named primary source before you rely on it.