Combination Bets: Complete Guide with Advantages and Risks
Everything you need to know about combination bets: how they work, calculating winnings, strategies, and pitfalls to avoid. A comprehensive guide with examples.
Combination bets (or "accumulators") are one of the most popular but also riskiest forms of betting. Discover how they work and how to use them wisely.
What Is a Combination Bet?
A combination bet involves grouping several single bets into one bet slip. To win, all selections must be correct.
Simple Example
You combine 3 matches:
- Manchester City to win (odds 1.50)
- Liverpool to win (odds 2.00)
- Arsenal to win (odds 1.80) Total odds for the accumulator: 1.50 × 2.00 × 1.80 = 5.40 If you bet £10 and all 3 teams win: £54 total return
How to Calculate the Odds of a Combination Bet
Simple Formula
Total Odds = Odds 1 × Odds 2 × Odds 3 × ... × Odds N
Detailed Example
A 4-fold accumulator:
- Match 1: odds 1.40
- Match 2: odds 1.60
- Match 3: odds 2.10
- Match 4: odds 1.90
Total Odds = 1.40 × 1.60 × 2.10 × 1.90 = 8.94
£10 stake → Potential return: £89.40 (£79.40 profit)
Accumulator Calculator
The Real Risk of Accumulators
The potential return looks attractive, but the win probability drops dramatically with each added selection.
* Based on average odds of 1.80 per selection
Why Does It Drop So Fast?
Probabilities multiply together. If each match has roughly a 55% chance of being correct:
| Selections | Probability of winning all |
|---|---|
| 1 | 55% |
| 2 | 30% |
| 3 | 17% |
| 4 | 9% |
| 5 | 5% |
This is precisely why bookmakers love accumulators: their margin multiplies too.
Advantages of Combination Bets
- High returns — Small stakes can generate significant payouts
- Entertainment — Follow multiple matches with a financial interest
- Attractive odds — The multiplier effect creates impressive combined odds
Disadvantages of Combination Bets
- High risk — A single losing selection voids the entire bet
- False sense of value — Large odds mask very low probabilities
- Amplified margin — The bookmaker's margin multiplies with each selection
- Extreme variance — Long losing streaks even with good selections
Strategies for Combination Bets
1. Limit the Number of Selections
Stick to 2 or 3 selections. Beyond that, the win probability becomes too low.
2. Only Combine Strong Favourites
Favour selections with a high probability (low to medium odds).
3. Avoid Mixing Sports
Stay within a sport you know well to maximise your edge.
4. Set a Strict Budget
Accumulators should only represent a small portion of your bankroll (5-10% maximum).
5. Consider Single Bets
Often, 3 winning single bets return more than an accumulator in the long run, with far less risk.
Accumulators vs Single Bets: Comparison
| Criteria | Single Bets | Accumulators |
|---|---|---|
| Risk | Moderate | High |
| Potential return | Lower | Higher |
| Consistency | More regular wins | Rare but large wins |
| Bookmaker margin | Simple | Multiplied |
| Recommended for | Serious bettors | Entertainment |
Conclusion
Accumulators are tempting because of their potential payouts, but they remain mathematically disadvantageous. Limit yourself to 2-3 selections, stake modest amounts, and remember: consistency with single bets almost always beats the volatility of accumulators in the long run.