Odds Comparison: How to Always Get the Best Price

Getting better odds might seem like a small thing. An extra 0.10 in your odds, or a few pence more on a pounds bet, hardly feels significant. But if you place bets regularly, the difference between always taking the best available odds and settling for mediocre ones is the difference between long-term profit and loss. This is where odds comparison becomes genuinely important.

Why Comparing Odds Matters

The same match outcome priced at 2.40 by one bookmaker and 2.60 by another represents a meaningful difference. Over 100 bets, the cumulative impact of consistently getting worse odds is enormous.

Let's work through a concrete example. Assume you've identified a selection where the true probability is 40 percent, so fair odds should be around 2.50. You place 100 bets at this true probability:

• At 2.40 odds: You'd expect to win 40 bets at 2.40, returning a loss of approximately 4 units (0.40 × 2.40 minus 1.0 per bet)
• At 2.60 odds: You'd expect to win 40 bets at 2.60, returning a profit of approximately 4 units

The difference between 2.40 and 2.60 is just 0.20 in decimal odds, yet over 100 bets it swings from a loss to a profit. This is why professional bettors spend significant time comparing odds. They understand that marginal improvements in prices, compounded across many bets, determine whether they make or lose money.

Manual Odds Comparison

The most basic approach is manual comparison. Open multiple bookmakers in separate browser tabs and check the odds for your selection. This works, but it's tedious and impractical if you have multiple bets to place.

To compare manually:

1. Open your top three to five bookmakers in separate tabs
2. Search for the match or market you're interested in
3. Write down or screenshot the odds each bookmaker is offering
4. Note any special conditions (minimum odds, new customer only)
5. Place your bet at whichever bookmaker offers the best price

This approach is fine for the occasional bet, but if you're placing multiple bets per week, it becomes laborious. The time you spend comparing could be better spent on analysis.

Odds Comparison Websites

Several dedicated websites aggregate odds from multiple bookmakers, updating in real-time. These tools eliminate the manual clicking and checking.

The main benefits of odds comparison sites:

• Real-time odds updates across dozens of bookmakers
• Side-by-side comparison of the same market
• Historical odds data showing how prices have moved
• Alerts for odds reaching certain thresholds
• Tools to identify line shopping opportunities

Popular odds comparison websites include Oddschecker, OddsPortal, and Betbrain. These sites make money through affiliate links, so they're free to use.

When using comparison sites, note a few important things:

• The odds shown are sometimes slightly delayed, so always check the bookmaker's actual site before placing a bet
• Not all bookmakers are included (the major ones are, but smaller operators might be missing)
• Some restrictions apply to new customers, and comparison sites might not always highlight this
• Odds change constantly, so a price you see on a comparison site might be gone by the time you click through

The Maths Behind Odds Differences

Different bookmakers offer different odds because they have different views on the probability of outcomes, or they're deliberately offering promotional odds, or they're simply making different commercial decisions.

The bookmaker's overround (the built-in margin) varies across bookmakers and markets. Some bookmakers are known for cutting margins on certain sports or leagues, whilst others are more generous on specific markets. Understanding where each bookmaker focuses their competitive advantage helps you know where to find the best odds.

For illustration, consider a simple match result market with three outcomes. The true probabilities might be:

• Home win: 45 percent (fair odds: 2.22)
• Draw: 28 percent (fair odds: 3.57)
• Away win: 27 percent (fair odds: 3.70)

Different bookmakers might offer:

• Bookmaker A: 2.10 / 3.30 / 3.40 (6% overround)
• Bookmaker B: 2.15 / 3.40 / 3.50 (4% overround)
• Bookmaker C: 2.00 / 3.20 / 3.40 (8% overround)

Bookmaker B offers better overall value. On the home win, you get an extra 0.05 in odds compared to Bookmaker C. On 100 home-win bets, that's roughly 2 units of additional profit.

Which Markets Have the Biggest Odds Variations?

Odds variations between bookmakers aren't uniform across all markets. Some markets have tighter odds, others more variation.

Lower-variation markets:

• Major match result bets (heavily traded, tight competition)
• Top-five league matches in Europe
• Popular under/over 2.5 goals markets
• Outright betting (champions, top-scorer)

Higher-variation markets:

• Smaller leagues or lower divisions (less betting volume)
• Obscure markets (player assist bets, corner counts)
• Early odds (24+ hours before kick-off)
• Asian-focused leagues
• Cup matches in less popular competitions

The variation is larger in less-traded markets because bookmakers can afford wider margins when volume is lower. This means odds comparison matters most on popular matches where variation might seem small, but actually compounds. For obscure markets, the variation might be 5-10 percent between the best and worst bookmakers.

The Concept of Best Available Odds

"Best available odds" is a term you'll hear professional bettors use. It means the highest odds available across all bookmakers at a given moment. In theory, always betting at best available odds means you're always getting maximum value.

In practice, there's a trade-off between spending time searching for the absolute best odds and placing the bet before the odds change. Sometimes the best odds are available at a bookmaker with slower bet settlement, or with technical issues on their site. The extra 0.05 in odds isn't worth the risk of not getting the bet on at all.

Most bettors aim for "good available odds" rather than the absolute best. Good available odds might be the best or second-best price available, taking into account execution speed and bookmaker reliability.

Building a Multi-Bookmaker Strategy

The most effective approach involves having accounts at multiple bookmakers. Having 5-10 active accounts means:

• You can compare odds across all of them instantly (using a spreadsheet or bookmark tabs)
• You're not restricted by any single bookmaker's limits or restrictions
• You can exploit bookmaker-specific promotions (one bookmaker might boost odds on certain events)
• If one bookmaker restricts your account, you still have others to bet on
• You can diversify your betting rather than concentrating it all with one operator

Having multiple accounts also provides protection against account restrictions. Bookmakers sometimes limit successful bettors' stakes or ban them entirely. If your entire betting operation runs through one bookmaker, a restriction is devastating.

Practical Odds Comparison Workflow

Here's how a practical odds comparison workflow might look:

1. Identify your selections earlier in the day (perhaps through analysis or a tips service)
2. One hour before kick-off, open your odds comparison site
3. Search for each selection and note the best available odds at each bookmaker
4. Compare against the odds you identified earlier. If they've drifted significantly (moved to worse odds), reconsider whether the bet still represents value
5. Place bets at the bookmakers offering the best odds
6. Record which bookmaker you used and the odds taken
7. Review after the event whether your odds selection was better or worse than the average

This workflow takes maybe 10-15 minutes for multiple bets, but the impact on returns is substantial.

Exchange Odds as a Benchmark

Betting exchanges like Betfair show odds set by other bettors, not a bookmaker. These odds are typically much closer to true probability because there's no bookmaker margin. You can use exchange odds as a benchmark to understand where bookmaker prices are unfairly short or generous.

If a bookmaker is offering 2.40 on a selection, but the exchange is showing 2.10 back odds (meaning bettors think the outcome is likely), the bookmaker price looks generous. Conversely, if the bookmaker offers 2.40 but the exchange shows 2.80, the bookmaker price is tight.

Even if you don't bet on exchanges, using them as a reference point for true probability is valuable.

The Time Investment Question

Spending time comparing odds is valuable, but only up to a point. Comparing odds on a 1.50 favourite where a 0.05 difference is worth a couple of pence on a pounds bet is lower priority than comparing odds on a 3.00 shot where the difference is more significant.

Tier your comparison effort:

• High-priority comparison: Larger stakes, longer odds, value bets (where the odds difference matters most to your expected value)
• Medium-priority: Regular-stake bets on moderate odds
• Low-priority: Very short odds, small stakes, or bookmakers with special restrictions

In Summary

• Comparing odds across bookmakers is fundamental to long-term betting success.
• Even small differences in odds compound to massive differences in returns over time.
• Use dedicated odds comparison websites to speed up the process, maintain accounts at multiple bookmakers to access a wider range of odds, and treat odds comparison as a non-negotiable part of your betting workflow.
• The bookmaker offering the best odds today might be different tomorrow, so comparison is an ongoing process.
• The effort involved is minimal compared to the impact on your long-term results.

Frequently Asked Questions

Q: Does 0.05 difference in odds really matter that much? A: Yes. Over 100 bets on reasonable-priced selections, a consistent 0.05 difference in odds can swing your overall result by several units. It compounds massively.

Q: Are odds comparison websites accurate? A: Mostly, but they can be slightly delayed. Always verify the odds on the bookmaker's actual site before placing your bet.

Q: Should I have accounts at every bookmaker? A: No need for every single one. Five to eight active bookmaker accounts covering the major operators is usually sufficient.

Q: What if the best odds are at a bookmaker I don't trust? A: Trust matters more than a marginal odds improvement. Stick with reputable operators even if their odds are 0.05 shorter.

Q: How often should I be comparing odds? A: For pre-match bets, check odds one to two hours before kick-off when the market has largely settled. For in-play betting, checking continuously is important.

Q: Do I need to compare odds on every single bet? A: Prioritise comparison on bets where the odds difference will meaningfully impact your expected value. On very short odds, differences matter less proportionally.