# Betting Exchange vs Bookmaker: Back, Lay and Commission Explained in Rupees Source: https://cricketin.org/en/compare/betting-exchange-vs-bookmaker [By Nikhil Varma](/en/authors/betting-analyst), Betting and Odds Analyst. [Reviewed by Rajeev Sathe](/en/authors/editor-in-chief), Editor-in-Chief. Updated 10 Nov 2026. Editorial policy: https://cricketin.org/en/editorial-policy 18+. Betting carries financial risk and can become addictive. Free helpline Tele-MANAS: 14416. --- Betting exchange against bookmaker: who you bet against, back and lay in rupees, how commission turns into effective odds and when each one costs you less. A bookmaker sets the price, takes the other side of your bet and builds its margin into the odds. A betting exchange only matches bets between customers, who can back an outcome or lay it, and charges commission on net winnings instead. At 5% commission, a winning ₹1,000 back bet at an exchange price of 2.50 earns ₹1,425, the same as a bookmaker price of 2.425, while laying ₹1,000 at 2.50 puts ₹1,500 at risk. This page compares the two models, works through back and lay in rupees, turns commission into effective odds you can set against a bookmaker's price, and explains what the difference means for someone in India. ## Exchange and bookmaker side by side Both let you bet on a cricket match at a price. They differ in who stands on the other side of the bet and in where the fee sits. **Table 1. Betting exchange and bookmaker compared** | Question | Bookmaker | Betting exchange | |---|---|---| | Who takes the other side | The bookmaker itself | Another customer; the exchange is not a party to the bet | | Who sets the price | The bookmaker | Customers, through the bets they offer | | Where the fee sits | Inside the odds, as the margin | Commission on net winnings in a market | | Betting against an outcome | Only by backing the other outcomes | Directly, by laying it | | Most you can lose | Your stake | Your stake when backing; your liability when laying | | Will the bet be taken? | Up to the bookmaker's limits | Only if another customer matches it | On an exchange every bet needs a backer and a layer, both of them customers, and exchanges charge commission on net winnings and nothing on a net loss ([Wikipedia on betting exchanges](https://en.wikipedia.org/wiki/Betting_exchange)). How a bookmaker builds its price is covered in our breakdown of [how bookmakers set odds](/en/guides/how-bookmakers-set-odds). ## Back and lay in rupees To back is to bet that something happens. To lay is to bet that it does not, which makes you the bookmaker for that bet. The lay side is the one to read carefully, because the money at risk is not the stake on the screen. **Inputs.** A team priced 2.50. Back stake ₹1,000, or lay stake ₹1,000. Commission 5% on net winnings. **Formula.** Back profit = stake × (odds − 1). Lay liability = lay stake × (odds − 1). Commission = net winnings × 5%. **Result.** Back: win ₹1,500 before commission, ₹1,425 after; lose ₹1,000. Lay: win ₹1,000 before commission, ₹950 after; lose ₹1,500. **Assumptions.** The bet is fully matched at 2.50 and is the only bet in that market. The 5% is an example rate; each exchange publishes its own. Read the lay line twice. A lay of ₹1,000 at 2.50 risks ₹1,500 to win ₹1,000. At a price of 10.00 the same lay risks ₹9,000. The higher the price you lay, the faster the liability grows. **Table 2. Liability on a ₹1,000 lay at different prices** | Price laid | You win if it loses | You pay if it wins | |---|---|---| | 1.50 | ₹1,000 | ₹500 | | 2.00 | ₹1,000 | ₹1,000 | | 2.50 | ₹1,000 | ₹1,500 | | 4.00 | ₹1,000 | ₹3,000 | | 10.00 | ₹1,000 | ₹9,000 | Winnings in the table are before commission. The liability column is the most you can lose on that one lay. ## Commission turned into effective odds An exchange price and a bookmaker price cannot be compared directly, because one has the fee taken later. Convert the exchange price first. **Inputs.** Exchange price O. Commission rate c. **Formula.** Effective odds = 1 + (O − 1) × (1 − c). **Result.** At 2.50 and 5%: 1 + 1.50 × 0.95 = 2.425. At 2.50 and 2%: 1 + 1.50 × 0.98 = 2.47. **Assumptions.** Commission is charged on the net winnings of this one bet. Rules that net several bets in a market, or discounts, change the figure. **Table 3. Exchange prices and their effective odds after commission** | Exchange price | Effective at 2% commission | Effective at 5% commission | |---|---|---| | 1.50 | 1.490 | 1.475 | | 1.90 | 1.882 | 1.855 | | 2.00 | 1.980 | 1.950 | | 2.50 | 2.470 | 2.425 | | 4.00 | 3.940 | 3.850 | | 10.00 | 9.820 | 9.550 | Turned around, the same formula tells you what exchange price you need to match a bookmaker. To equal a bookmaker's 1.90 at 5% commission, the exchange must offer at least 1 + 0.90 ÷ 0.95 = 1.947. Anything lower and the bookmaker pays more on that bet. Converting between formats before you compare adds its own small error, as our page on [odds formats](/en/compare/decimal-vs-fractional-vs-american-odds) shows with a worked example. ## Comparing the fee: margin against commission A bookmaker's fee shows when you add the implied chances of all outcomes. Two prices of 1.90 give 52.63% + 52.63% = 105.26%, a margin of 5.26%, as our guide to [overround](/en/guides/what-is-overround) works out. **Inputs.** An exchange market with best back prices of 1.99 and 2.02 on the two sides. Commission 5%. This is an example, not a reading from any exchange. **Formula.** Effective odds 1 + 0.99 × 0.95 = 1.9405 and 1 + 1.02 × 0.95 = 1.969. Fee = 1 ÷ 1.9405 + 1 ÷ 1.969 − 100%. **Result.** 51.53% + 50.79% = 102.32%, an effective fee of about 2.32%. **Assumptions.** Both prices are available in the size you want. Thin markets often have wider gaps between prices, which raises the fee. On these example numbers the exchange costs less than half as much as the bookmaker. The gap depends on how close the exchange prices are and on the commission rate, so check both before drawing a conclusion. ## What changes in practice - **Getting matched.** An exchange bet only stands once another customer takes the other side. In a quiet market a request can sit unmatched while the price moves. - **Limits.** A bookmaker can cap what you stake. In British regulator data on accounts active in 2024, 2.68% had a stake factor restriction and 2.23% had been closed for commercial reasons ([Gambling Commission](https://www.gamblingcommission.gov.uk/blog/post/commercial-restrictions-by-betting-operators)). - **The lay trap.** Laying a big price feels safe because it usually wins, but one loss can wipe out many small wins, as Table 2 shows. Market types matter as much as the model. Session and fancy bets carry their own fees and rules, covered in our guide to [bet types](/en/guides/cricket-bet-types-explained). ## How the law and research describe exchanges British law gives the exchange model its own name. Under the Gambling Act 2005, a betting intermediary is a person who provides a service designed to facilitate the making or acceptance of bets between others ([Gambling Act 2005, section 13](https://www.legislation.gov.uk/ukpga/2005/19/section/13)). Exchanges also changed what bookmakers charge. A study of English Premier League prices at the two largest UK bookmakers found that their margins fell over time, and linked the fall to competition from a betting exchange rather than from online bookmakers ([Che, Feddersen and Humphreys, 2017](https://ideas.repec.org/h/elg/eechap/16946_3.html)). ## Exchange IDs and agents in India Many people in India meet exchange-style prices through an agent who hands out an account ID, rather than through a site in their own name. That arrangement removes the records you would need in any dispute, as our guide to the [cricket ID](/en/guides/cricket-id-and-agent-accounts) and agent accounts explains. The legal position of online betting in India is a separate question, set out on our [legal hub](/en/legal). This page covers only the mechanics. Whatever model you use, the sums above apply to every [cricket bet](/en): work out the fee, know the liability, and stake only what you can lose. Betting is for adults 18 and over. A Cricketin account starts on the [sign up](/en/signup) page, which lists the steps and the errors that most often hold people up. ## Questions people ask ### What is the difference between a betting exchange and a bookmaker? A bookmaker sets the odds and takes your bet itself, with its margin built into the price. An exchange matches bets between customers, lets you back or lay, and charges commission on net winnings. ### What does lay mean in betting? To lay is to bet that an outcome will not happen. You take the bookmaker's side, so you win the backer's stake if the outcome fails and pay out stake × (odds − 1) if it happens. Laying ₹1,000 at 2.50 risks ₹1,500. ### How does exchange commission change the odds? Effective odds = 1 + (price − 1) × (1 − commission). At a price of 2.50 and 5% commission the effective odds are 2.425; at 2% they are 2.47. ### Is a betting exchange always cheaper than a bookmaker? Not always. It depends on how close the exchange prices are and on the commission. To beat a bookmaker's 1.90 at 5% commission, the exchange must offer at least 1.947. ### Is laying riskier than backing? It can be. A back bet risks only the stake, while a lay risks stake × (odds − 1). 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