Learn everything you need to know about Sure Betting
Sure betting (arbitrage betting) guarantees profit by placing bets on all possible outcomes of an event across different bookmakers whose combined odds exceed 100% payout. Because the combined implied probabilities sum to less than 1, the bettor locks in a risk-free profit regardless of the result. These opportunities are rare, short-lived, and typically yield 0–3% ROI per bet, requiring fast execution and a multi-bookmaker portfolio.
Do they exist or don't they, meaning the 100% sure bets - the so-called sure bets. Sure betting does not mean that you place bets on high favorites, but rather exploit differences in the odds with different bookmakers. Sure bets are basically played by placing bets with several bookmakers who give different odds on the different outcomes of a game.
For example, if you bet on a win, a draw and a defeat with one and the same bookmaker and adjust the stakes so that no matter what the outcome of the game, you end up with the same profit, you will receive 90-97% of your stake back, depending on the bookmaker. The remaining 3-10% is the bookmaker's profit margin. The aim of sure bets is to find differences in odds with different bookmakers that lead to a profit of more than 100% of the stake, regardless of how the game ends. Of course, these bets are rare and the bookmakers try to avoid sure bets by quickly adjusting the odds.
Everyone who regularly plays sure bets has certainly encountered the following situation: you are about to place a bet on one of the betting outcomes required for sure bets and suddenly the site is no longer accessible, even though you have already started your sure bet with another betting provider. The accessibility of the bookies is usually 99% perfect, but please as I mentioned above, 100% does not exist.
Portfolio Strategy: In order to be able to react quickly, a portfolio of several bookmakers is essential, what use is the nicest sure bet if you do not have an account with the bookmaker yet. Especially for sure betting hobbyists, you should have a large portfolio of bookies.
Quick Action Required: Due to rapid odds changes, first place the leg where the odds outlier is particularly high compared to the market average and only offered by a single bookmaker.
You have just found an extremely attractive sure bet and no or too little money in a bookmaker account? You can't afford that under certain circumstances and should ensure your bankroll is fairly distributed. Use virtual wallets to quickly move betting capital between bookmaker accounts.
Important: Don't play every tiny sure bet; factor in fees and betting taxes. Investigate taxation & fees per bookmaker beforehand.
You should already have a betting bank of at least four figures, otherwise the return would not be worth it. This is also one of the negative aspects: a high starting capital.
In very few cases you can get up to 5% ROI; assume an average 0-3%.
Sports betting can be a fun way to make some extra money, but it can also be very difficult to succeed at. Sure betting is a more secretive form of betting where it is hard to find betting opportunities. But if you finally find one, you will lock in guaranteed profits! Feel free to read other topics like value betting or browse the blog overview.
Sure betting is theoretically risk-free from a sporting outcome perspective, but carries operational risks: odds may change between placing the first and second leg, a bookmaker's site may go down, or accounts may be limited. Execution speed is critical — always place the leg with the biggest odds outlier first. Factor in betting taxes and withdrawal fees, as these can eliminate the margin on small arb percentages.
A four-figure bankroll is the practical minimum for sure betting to generate meaningful returns, since average margins run at 0–3% per bet. With €1,000 bankroll and a 2% arb margin, profit per bet is only €20. Most serious arb bettors start with €5,000–€10,000 distributed across multiple bookmaker accounts to ensure enough capital is in the right place when opportunities arise.
Yes. Bookmakers actively monitor for arbitrage patterns and will limit or close accounts of suspected arb bettors. Signs that trigger flags include consistently placing bets near closing time, always backing high-odds outliers, and withdrawing profits frequently. Managing a large portfolio of bookmakers and avoiding obvious patterns can extend account longevity, but account restriction is an unavoidable long-term risk of sure betting.
Sure betting (arbitrage) eliminates all outcome risk by covering every result across multiple bookmakers, earning a small guaranteed margin. Value betting takes a directional position on a single outcome where the odds are higher than the true probability, accepting short-term variance in exchange for higher long-term ROI. Value betting typically yields 5–15% ROI at scale, compared to 0–3% for arbitrage.