Date: 29.04.2025

by Maciej Grabowski

Arbitrage betting – How to Profit from Odds Differences?

Arbitrage betting allows bettors to exploit discrepancies in odds offered by different bookmakers to secure a guaranteed profit, regardless of the outcome. While the strategy is mathematically sound, it requires precision, discipline, and an understanding of how bookmakers operate.

What is arbitrage betting?

Arbitrage betting, often called surebetting, is a technique where bettors place bets on all possible outcomes of an event using different bookmakers, ensuring a profit due to differences in odds. These discrepancies arise because bookmakers independently calculate their odds, sometimes reacting differently to market shifts, team news, or betting volumes.

For example, one bookmaker may offer odds of 2.10 on Team A to win, while another offers 2.10 on Team B. Placing the correct amounts on both outcomes secures a return higher than the total stake.

Why do odds differ?

Odds variations are natural in a decentralized market. They result from different risk assessments, margin strategies, or timing of updates. European markets, with a mix of domestic and international bookmakers, are particularly fertile ground for odds comparison and finding surebets.

Risks and benefits

Benefits include:

  • Predictable profits

  • Independence from luck or form

  • No need for deep sports knowledge

Risks involve:

  • Bookmaker limits

  • Odds shifting during execution

  • Potential legal or tax complications

How arbitrage betting works

At the core of arbitrage betting lies the concept of a surebet – a set of bets that, when placed in specific ratios, guarantees a profit regardless of the event outcome.

Imagine a tennis match with two possible outcomes. Bookmaker A offers 2.05 for Player 1, and Bookmaker B offers 2.15 for Player 2. Using an arbitrage calculator, you can determine the stake distribution needed to guarantee profit.

If you want to stake €100:

  • Place €51.19 on Player 1 at 2.05

  • Place €48.81 on Player 2 at 2.15

In both cases, the return is €104.94. So you’ve made a risk-free return on your money and a little bit of profit. This is known as risk-free betting, though it requires speed and accuracy to avoid slippage from live odds changes.

Types of arbitrage betting

Arbitrage strategies can vary depending on the timing, markets, and tools involved.

The most common form, pre-match arbitrage, involves scanning odds before the event begins. It’s relatively stable but vulnerable to quick corrections by bookmakers.

In live betting, odds fluctuate rapidly. While it offers more opportunities, it also demands faster execution and exposes bettors to greater risks of odds changes or bet rejections.

Some events, such as basketball or tennis, offer multiple betting lines (e.g., point spreads, totals). Multi-line arbitrage involves betting across these lines when odds are misaligned.

Also known as bonus hunting, this involves using free bets or promotional offers from bookmakers to construct arbitrage opportunities. While profitable, it’s often scrutinized by operators.

Tools and software for arbitrage betting

To navigate the arbitrage landscape efficiently, bettors often rely on specialized tools and platforms.

  • RebelBetting: Offers pre-match and live surebets with clear ROI estimates.

  • OddsJam: Known for U.S. and international market coverage.

  • BetBurger: Supports live and pre-match betting with high-frequency updates.

These platforms scan thousands of events daily and offer real-time alerts.

Advanced users integrate automated scripts or betting arbitrage software to speed up the process. Some tools offer semi-automated placement with bookmaker APIs.

Pros and cons of paid services

Pros:

  • Time efficiency

  • Access to rare surebets

  • Consistent updates

Cons:

  • Monthly subscription costs

  • Risk of being flagged by bookmakers

  • Reliance on tool availability

Succeeding in arbitrage betting requires more than just math skills.

Returns per arbitrage are usually low (1–5%). To make a meaningful profit, a sizable bankroll is necessary. For instance, a 2% ROI on €1,000 means a €20 profit – repeatable, but not spectacular without volume.

To find and execute sure betting opportunities, you’ll need accounts across various licensed bookmakers. This allows for greater flexibility in odds selection.

Markets change fast. Odds may disappear within seconds. Being able to act swiftly is key – that includes having funds ready, browsers preloaded, and two-factor authentications managed efficiently.

Account limitations and bans

Most bookmakers actively monitor betting patterns to detect arbitrage behavior. Accounts suspected of surebetting are often subject to:

  • Stake limitations

  • Withdrawal delays

  • Permanent bans

To mitigate this, some bettors use natural betting patterns and moderate stakes to avoid detection.

Odds shifting and market delays

Even slight delays can ruin a betting opportunity. Odds may change just as a bettor is placing the second leg of the arbitrage, leading to potential loss instead of profit. Fast, reliable internet and platform stability are essential.

Errors in stake calculation, misreading odds formats (e.g., decimal vs. fractional), or accidentally betting twice on the same outcome are common pitfalls, especially for beginners. Using an arbitrage calculator helps reduce these risks.

Legal and tax considerations

Arbitrage is generally legal across Europe, but its tax treatment and legality vary. Some jurisdictions require winnings to be reported, while others treat gambling profits as tax-free.

Operators, meanwhile, may include clauses in their terms prohibiting arbitrage or bonus abuse, even if local law does not ban such activity.

The legality of arbitrage betting depends on local gambling laws and how bookmakers enforce their own terms of service.

In countries like the UK, Sweden, and Germany, arbitrage betting is legal and falls under general gambling regulations. However, some nations may restrict access to multiple betting sites or limit bonus use, which indirectly impacts arbitrage activity.

It’s important to distinguish between legality and terms of service compliance. A bookmaker might penalize a user for breaching internal rules, even if no law has been broken.

Is it worth the risk?

From a legal standpoint, arbitrage betting is rarely prosecuted or penalized by authorities. However, users must be cautious about:

  • Licensing status of bookmakers

  • Local restrictions on multiple accounts

  • AML (Anti-Money Laundering) and KYC (Know Your Customer) checks

Strategies and best practices

To stay under the radar and maximize long-term returns, arbitrage bettors use a variety of strategies to manage their activity.

Maintaining a pattern that resembles casual betting is key. Avoid placing only maximum-return bets or always betting close to market close. Mixing sure bets with occasional single bets can help mimic natural behavior.

Avoid consistently placing round numbers. Instead of betting €100, choose €97.34 – it appears less automated and reduces the chance of detection.

Using multiple devices, VPNs, and browsers can help manage multiple accounts without raising red flags. Rotate bookmakers and avoid being overly active with one operator.

Frequent, high-value withdrawals can also draw attention. Keeping a steady, moderate withdrawal rhythm adds a layer of camouflage.

Arbitrage betting in Europe

Europe offers a diverse and competitive landscape for arbitrage betting, shaped by market fragmentation, licensing models, and odds dynamics.

Countries with high bookmaker competition, such as the UK, Spain, and Italy, tend to generate more odds discrepancies. The presence of both national and pan-European brands creates more arbitrage opportunities.

Markets with strong regulation and multiple licensed operators often provide more transparent odds and stable platforms for executing arbitrage bets.

Role of Asian and European odds

Arbitrage often involves combining Asian odds markets (typically low margin and high liquidity) with European bookmakers, where pricing may lag. Bettors capitalize on these delays, especially during high-volume periods.

Understanding how different bookmakers structure their margins is crucial to identifying high-value surebet opportunities.

Access to licensed operators

Regulated European markets typically allow access to several licensed operators. However, bettors may need to verify their identity and adhere to anti-fraud controls, which vary by country.

Tools that aggregate odds and automate stake suggestions are particularly valuable in jurisdictions where fast execution is needed to comply with timing restrictions.

Conclusion

Arbitrage betting remains a viable and mathematically sound strategy for players willing to invest time, capital, and precision. It can provide stable, predictable profits without depending on game outcomes.

However, it requires a clear understanding of operational challenges, bookmaker behavior, and legal frameworks. For newcomers, starting small with reputable tools and avoiding aggressive staking can help build experience and minimize risk.

Ultimately, arbitrage betting is best suited to disciplined bettors who view gambling as a financial exercise, not entertainment. With the right approach and ongoing adaptation to the market, arbitrage can remain a reliable part of a broader betting strategy.