Arbitrage Betting Sites

By the Bet at editorial teamUpdated 27 August 202518+ · T&Cs apply to all offers

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What is Arbitrage Betting?
How Does Arbitrage Betting Work?
Best Sites for Arbitrage Betting in the UK
How to Find Arbitrage Bets
Arbitrage Calculators and Tools (2026 Edition)
Common Mistakes Beginners Make in Arbing
The Future of Arbitrage Betting: Trends and Innovations
Arbitrage Betting Advantages
What are the Risks of Arbing?
Best Sports for Arbitrage Betting
Bookmaker vs Betting Exchange
Arbing Tips
Final Thoughts
FAQ

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It goes without saying that every single bettor wants to make money. While there's no such thing as certainty in betting, as there is in life, oddsmakers come as close as they can. Done correctly, it can guarantee you profits regardless of the actual outcome of a betting event.

In this article, we're going to tell you everything you need to know about arbitrage. We'll explain exactly what it is, how you can do it for yourself, and tell you about some of the best arbitrage betting sites out there right now.

What is Arbitrage Betting?

A common financial practice, stock market arbitrage occurs when an investor buys an asset in one market and simultaneously sells it at a higher price in another market. The buying and selling prices are calculated in such a way that the investor makes a profit. Efficient strategies are often successful.

In arbing, which refers to arbitrage betting that has adopted this idea, a bettor places a bet on both sides of the same market. The bettor is assured of a return if the odds of the back bet exceed the odds of the lay bet. Careful analysis of the market can improve results.

If you want to participate in arbitrage, choose your arbitrage betting sites carefully. Ideally, although you can place the back bet with a bookmaker, you should place the lay bet with a betting exchange. This is essential as it will help you get the exact odds you need. Such attention to detail improves overall profit margins.

How Does Arbitrage Betting Work?

In arbitrage sports betting, you bet on both outcomes in a two-outcome market and are guaranteed to win one of your bets. Here's a quick and easy example to show you exactly how it works.

You place a back bet at one of the best bookmakers for arbitrage (listed above)
You go to a betting exchange and look at the odds offered on the lay bet (i.e. the market for the outcome not to happen)
Decide on the amount you need to place on the lay bet, at the odds offered, to guarantee a profit. You can use an arbitrage calculator (widely available on the Internet) to help you find the optimum amount
regardless of the outcome, you collect your winnings;

For example, in a match between Manchester United and Leeds United, you might like Man U to score a hatful of goals and therefore place a back bet on the Over 2.5 Goals market. You can then place another bet (with a betting exchange such as Betfair) against the same market. Let's say you have a £10 back bet at odds of 6/5 and a £11 lay bet at odds of evens. If Manchester United score 3 or more goals and your back bet wins, your return will be £22. Your actual profit can be calculated as £22 (win) - £10 (sportsbook bet) - £11 (exchange bet) = £1. In the second scenario, Manchester United score 2 goals or less, and you get a return of £22 if your lay bet wins. You can calculate your profit as £22 - £10 - £11 = £1 (minus the commission paid to the bookmaker).

As you can see, you will make a small profit regardless of the outcome. Keep in mind, however, that bookmakers charge between 2% and 5% commission on most successful bets, and you need to factor this into your calculations.

Best Sites for Arbitrage Betting in the UK

Not every sportsbook is suitable for arbitrage betting. These are the best bookmakers for arbing in the UK that will actually allow you to carry out the strategy successfully.

Betfair

Founded in 2000, Betfair began as a betting exchange and later expanded to include a UKGC and MGA-licensed sportsbook. It has since grown to become the largest betting exchange in the world, and Betfair further enhanced its traditional bookmaking services when it merged with Paddy Power in 2016. Betfair is a punter-friendly outfit, offering hundreds of racing and football options every day. Live streaming and high betting limits also make for a superlative betting experience.

Smarkets

A relatively new entrant to the betting industry, Smarkets is a UK-based betting exchange and bookmaker that was founded in 2008. However, it has quickly gained a reputation as a reliable and trustworthy platform.

If you are looking for an arbitrage betting site, then Smarkets is a first class option. It even gives the market leader Betfair a run for its money as a betting exchange with a lower commission rate of 2%. In addition to a variety of sports, Smarkets also offers betting opportunities in politics and other diverse areas. Elsewhere, Smarkets is generally known to be very punter-friendly, with a minimum deposit limit of £10, excellent odds and fast withdrawal processing.

Matchbook

Founded in 2004 and licensed by the UKGC, Matchbook is a poker-friendly sportsbook that also offers a betting exchange, which really sets it apart from traditional bookmakers. Matchbook does not actually have the most extensive sportsbook, as its horse racing betting section - for example - is limited to races in Ireland and England. However, there is a £15 free bet welcome offer, and with a low commission rate of 1% - Matchbook compares favorably with larger betting exchanges such as Betdaq, Smarkets and Betfair.

Betdaq

Headquartered in Gibraltar, Betdaq was founded in 2000 and is the second largest betting exchange in the world, with a commission rate of 2%, which compares very favorably to Betfair's 5%. Betdaq offers free betting bonuses and has no maximum betting limits. For these reasons and more, fans of sports betting will love Betdaq; a site owned and operated by a company that is listed on the LSE.

How to Find Arbitrage Bets

As you can see from our example above, successful arbing will guarantee you at least some profit. One of the biggest challenges in executing this strategy is actually finding the arbing opportunities, and these are the three main ways you can do this.

Manual

Although it can be a lot of work, making it a less popular option, you can find arb betting opportunities manually (in other words, by doing your own research). Although this method may result in lower profits, we recommend that you try to find arb betting opportunities manually, at least in the early stages.

This can be a great part of your "training" in arb sports betting. Manually hunting for arb opportunities will allow you to get a good understanding of how betting sites work and how to spot a good opportunity. Best of all, since you won't technically know about any opportunities you miss, you won't feel any pressure to rush into any bets.

Arbing Software

After you have sufficiently understood the arbing betting process by manually hunting for arbing opportunities, you can try using software to detect them instead.

There are many free tools, as well as paid software, that allow you to compare the odds on various sporting events offered by numerous betting exchanges and bookmakers. These will alert you to potential betting opportunities, and many tools will also calculate the maximum possible profit percentage and how long you have to place the bet before the opportunity slips away.

Social Media

The final way to get help in your arbing sports betting activity is to become a member of one of many arbing forums or message boards, where you can get tips from other prospective arbers. Belonging to such platforms will also open the opportunity to join an arbing team, in which all members will benefit from the collective effort of hunting arbing opportunities, and even from the availability of additional funds and numerous betting accounts of the various members.

Arbitrage Calculators and Tools (2026 Edition)

One of the most important resources for any successful arbitrageur is a reliable arbitrage calculator. In 2025, there are dozens of updated calculators and automated tools that make the process faster and more accurate. An arbitrage calculator works by showing you exactly how much to put on each side of a bet, ensuring a guaranteed profit regardless of the outcome. This eliminates the guesswork and reduces the risk of human error.

Modern odds calculators go far beyond simple odds distribution. Many premium platforms now offer real-time odds comparison across hundreds of bookmakers and betting exchanges. They also provide alerts when a profitable arbitrage opportunity arises. Some even integrate directly with betting accounts, allowing you to place your bets with one click without leaving the software. While free calculators are available, professional arbitrageurs often prefer paid tools because they provide faster odds updates and cover a wider range of markets.

In addition, some arbitrage software now includes AI-driven predictions to identify short-lived opportunities that can disappear in seconds. This can be the difference between catching an arb in time and missing it altogether. If you are serious about arbing, investing in quality calculators and automation tools is almost essential.

Common Mistakes Beginners Make in Arbing

Arbitrage betting may seem simple, but many beginners make avoidable mistakes that cost them money. The most common mistake is failing to double check your calculations before placing a bet. Even a small mistake in the amount of the bet can turn a guaranteed profit into a loss. This is why it is so important to use a calculator and check every bet carefully.

Another common problem is underestimating bookmaker restrictions. Many sportsbooks actively monitor accounts for betting activity, and if they detect suspicious betting patterns, they may limit your stakes or even close your account. Beginners often start with the same bookmaker repeatedly, making it easy for the operator to notice unusual betting behavior. Experienced bettors spread their activity across multiple accounts and rotate strategies to stay under the radar.

Finally, timing is critical. Odds move quickly, and new players often fail to act quickly enough when an opportunity arises. By the time the bet is placed, one side of the arb may have already shifted, destroying the profit margin. To avoid this, beginners should practice with small stakes and gradually improve their reaction speed before risking larger amounts of money.

The Future of Arbitrage Betting: Trends and Innovations

Arbitrage betting has been around for decades, but the landscape is constantly evolving. In 2025, the industry is being shaped by three main forces: automation, regulation, and market liquidity. As betting exchanges and bookmakers adopt more advanced technologies, the opportunities for arbitrage are rapidly changing.

A major trend is the rise of fully automated trading bots. These programs scan hundreds of markets simultaneously and automatically place bets within milliseconds of spotting a profitable opportunity. While bookmakers try to counter such software, exchanges often encourage it because it increases market liquidity. The future of arbing will likely involve more automation and AI-based systems that are difficult for humans to compete with manually.

Another development is increased regulation. Licensing bodies such as the UK Gambling Commission (UKGC) are paying more attention to fairness, transparency and privacy. While arbitrage betting remains legal, some jurisdictions may introduce new rules that affect the way arbitrage operators operate. At the same time, greater transparency in the calculation of odds could create additional opportunities for sharp bettors.

Finally, the global betting market is becoming more interconnected. With cross-border betting exchanges and crypto-based sportsbooks gaining popularity, liquidity is expanding, making it easier to find profitable arbitrages. As we move forward, arbitrage betting is likely to become more competitive, but also more sophisticated, rewarding those who adapt quickly to new technologies and market conditions.

Arbitrage Betting Advantages

Arbitrage sports betting has become increasingly popular among punters for several key reasons. Below, we have collected some of the most attractive features of this strategy.

Guaranteed Winnings - This is clearly the main advantage of arbitrage sports betting. If you do it correctly, you are guaranteed a profit regardless of the actual outcome of the market you are betting on. To actually do it correctly, however, you have to be quick to take advantage of arbitrage - something you get better at with experience
Comparatively Easy - Many sports bettors dream of making big money on sports they enjoy and are knowledgeable about. One of the main ways that big-time, successful gamblers win is by handicapping. Handicapping games consistently is harder than it seems, and a very small percentage of players manage to beat the odds and win big. For most people, arb betting is actually a much better alternative, as it allows you to win without being great at handicapping, as long as you are adept at monitoring the odds and acting quickly;

No Shortage of Opportunities - Because of the guaranteed winnings, the uninitiated may think that arbitrage opportunities are few and far between. In reality, however, you will find hundreds of potential arbitrage sports betting opportunities every day throughout the betting industry. This is usually because - while bookmakers try to stay in sync when moving odds on betting events - there are always stragglers who cannot keep up. These odds discrepancies provide players with opportunities to capitalize on;

Arbitrage betting is legal - Bookmakers may frown upon arbitrage betting - which often violates the terms and conditions of their sites - but the activity is definitely not illegal. In fact, many betting exchanges, such as Betfair, encourage arbitrage betting as it adds significant liquidity to their betting markets;

Leveling the playing field - Players are always looking for a level playing field in an area where bookmakers have an advantage. Arbing helps with this dramatically. While bookmakers - on a basic level - try to lay odds that are bad value, arbers try to lay odds that are good value;

What are the Risks of Arbing?

By its very nature, arbing is almost completely risk free. However, there are a few disadvantages to this strategy that you should be aware of before committing to it.

Bookmakers may limit or close your account: One of the biggest risks of arbitrage betting is that bookmakers who suspect you of arbitrage betting may limit your account, restrict your stakes, or even close your account. Fortunately for you, a legitimate and licensed bookmaker cannot actually touch your account balance or winnings. Also, if you have an account with a bookmaker that has promised a minimum stake guarantee, you may be able to continue arbing even after you are gubbed, albeit with significant restrictions;

Human error: Arbing requires intense concentration over a long period of time, and the effort can easily lead to human error. For example, you may not move quickly enough when you see a price difference, or you may fail to ensure that you are placing the correct bets. You might even fail to match the odds offered by different bookmakers if you really take your eye off the ball;

Rapidly Changing Odds: The risks of arbing include not being able to cover both sides of a bet due to rapidly changing odds. In some cases, you may simply have to take a loss while ensuring that the loss is kept to a minimum by taking the lay bet at undesirable odds;

Differences in how different bookmakers calculate odds: Different bookmakers may have different rules for how they calculate bets. You may run into problems if a bookmaker does not calculate your bets the way you expect, or if the odds change in a surprising way. This can happen in sports such as baseball, tennis, and hockey, among others;

Odds calculation error: Bookmakers have been known to use a technical error in calculating odds for an event as an excuse to cancel bets on that event. Low-rated bookmakers do this more often than licensed, reputable ones. One way to avoid such a risk is to refrain from placing a bet if you think the odds for your selected event are suspiciously out of line with the competition;

Best Sports for Arbitrage Betting

Arbing can be done on most sports, but some are definitely more suitable than others. These are some of the best markets to target when getting started with arbitrage betting.

Soccer - Soccer is the most popular sport in the world. With major competitions taking place throughout most of the year, there is a wide variety of bets and therefore plenty of opportunities to make money. Bookmakers also tend to set higher betting limits on football due to its popularity, and - due to a huge range of viewing options, helpful statistics and analytical coverage - it's easier to spot football arbitrage bets than on any other sport. Tennis - Tennis arbitrage has become increasingly popular, partly due to the dynamic nature of the sport. Tennis has many twists and turns, which in turn cause the odds to change frequently. Video broadcasts of matches also allow arbers to easily keep track of the latest goings-on and take advantage of tennis arbing opportunities.
Hockey - Hockey matches are often held, not only in North America, but in Europe as well. Bookmakers offer a wide range of bets on the sport, and while not quite as dynamic as tennis, hockey odds are still volatile enough to make hockey arbing worthwhile
Baseball - Baseball offers a good selection of live events, often taking place simultaneously. Bookmakers offer high stake limits on baseball games, and its slow nature gives you time to react to odds changes, making baseball arbing a solid option for punters
Volleyball - Volleyball, by its very nature, offers many arbing opportunities. It's not the most popular sport with arbiters, but this actually works in the market's favor as an option for arbitrage betting. With fewer people involved in volleyball arbitrage betting, bookmakers pay less attention to betting on the game and are therefore less likely to track arbing activity. This allows players to fly under the radar while arbing volleyball;

Bookmaker vs Betting Exchange

Which are the better arbitrage betting sites - bookmakers or betting exchanges? More and more arbitrage betting enthusiasts are turning to betting exchanges as a viable alternative to bookmakers because betting exchanges offer better (or at least more flexible) odds than bookmakers. This is because, unlike bookmakers, betting exchanges do not depend on betting odds for their income. They simply match punters with layers, or in other words, those who bet on odds with those who offer the odds.

Betting exchanges earn revenue by charging a commission, typically 2-5%, on the winnings of their users. Bookmakers, on the other hand, build their profit margins into the odds they offer their customers, which effectively means that the odds offered by a bookmaker do not reflect the true probability of an event.

Higher odds are a clear advantage that bettors enjoy at an exchange. However, there are also some disadvantages.

The punter at a betting exchange can guarantee a profit by trading the market (in other words, placing a bet when the price is lower than when the punter placed the bet, or vice versa). However, the amount you can bet on a betting exchange depends on how liquid the market is. You cannot expect to make a greater return than the amount another punter is willing to risk. So you may have to accept a lower return unless you are prepared to wait for someone else to offer the same bet (at similar odds).

Arbing Tips

Arbing may sound pretty straightforward, but there are definitely things you can do to improve your odds. These are our top tips for improving your arbing betting experience and earning bigger winnings:

Target Two-Outcome Events - When trying to apply an arbing betting strategy to an event with three or more possible outcomes, things can get complicated. While focusing on events with only two possible outcomes may limit your arbing opportunities, it will make your betting experience much more manageable;

Avoid Calculation Errors - As we have pointed out elsewhere in this article, one of the biggest risks you run in arbing is making careless mistakes in your calculations, which can ruin the whole idea of guaranteed profits. While it's important to move quickly when you spot an arbing opportunity, you should still pause long enough to double check your calculations for possible errors before making the final move;

Betting exchanges can be more useful than bookmakers - Using a betting exchange allows you to vary your arbitrage strategy by betting on an outcome before backing it with a bookmaker. Although this can be more complicated than traditional arbitrage betting, it can increase your profits;

Make sure your accounts are well-funded - Make sure your accounts at the arbitrage betting sites are well-funded at all times. This will help you save valuable time when you see an arbitrage betting opportunity that requires you to act quickly to take advantage;

Work as part of a team - Rather than going it alone, we'd recommend working as part of an arbing team if possible. Not only will you have more people looking for Arbing opportunities, but you will also have a larger pool of money to bet with. In addition, you may have more betting accounts, as each member of the team - if they're careful - can open many accounts. By doing this and spreading the activity between accounts, each account is likely to last longer before a bookmaker limits or closes it;

Final Thoughts

As we have shown, arb betting guarantees profits regardless of the outcome of betting events. Although the margins are small, arb betting - if done correctly - can provide steady returns over a long period of time. It requires a great deal of concentration and patience, but it will eventually pay off.

You can start your arbing adventure by identifying opportunities manually and then graduate to using software tools as you learn more. An important first step is to identify the best bookmakers for arbing, and you will also find that betting exchanges are very useful in this strategy. Arb betting carries its own risks - as mentioned above - but when done correctly, it can be a fun and lucrative strategy.

FAQ

Is arbitrage betting illegal?

No. Arbitrage betting is not illegal, although bookmakers are against it and will limit (or even close) your account if they suspect arbing activity. One of the best proofs that arbing is not illegal is the existence of numerous software tools designed to help arbitrage betting. Such tools would not be publicly available if arbing were considered illegal.

Which bookmaker is the best for arbitrage betting?

The best bookmakers for arbitrage betting are betting exchanges that also offer a sportsbook section. These include Betfair, Betdaq, Smarkets and Matchbook.

Do all betting sites allow arbing?

Betting exchanges not only allow arbing, but actually encourage it, as arbing activity improves the liquidity of their platform. Bookmakers, however, frown upon arbing activity, as arbers who back good odds attempt to reverse the bookmakers' strategies of laying bad odds.

Is arbing still possible in 2025?

Arbing is possible whenever and wherever betting takes place. Betting odds are dynamic and constantly changing. Even when bookmakers try to move odds in unison, there will always be some bookmakers who lag behind and do not change odds as quickly as others, creating arbing opportunities for players to exploit.