Accumulator Insurance: Complete Guide 2024
Accumulator insurance (acca insurance) refunds your stake if exactly one leg of your accumulator loses. These promotions reduce the frustration of losing parlays to a single incorrect selection while providing genuine value for acca bettors.
What Is Accumulator Insurance?
If your accumulator has one losing leg and all others win, the bookmaker refunds your stake (usually as a free bet).
Example: 5-Fold Acca with Insurance
- Stake: £10 on 5-fold acca at combined 25.0 odds
- Legs: 5 football matches
- Result: 4 legs win, 1 leg loses
- Normal outcome: Lose £10 stake
- With insurance: Get £10 refund as free bet
Common Acca Insurance Terms
| Requirement | Typical Terms |
|---|---|
| Minimum Legs | 5-7 selections |
| Minimum Odds Per Leg | 1.3-1.5 |
| Minimum Total Odds | 5.0-10.0 |
| Maximum Refund | £10-£50 |
| Refund Type | Free bet (SNR) |
Optimal Acca Insurance Strategy
1. Target Specific Number of Legs
Meet the minimum exactly. A 5-leg requirement doesn't benefit from 6 or 7 legs—just adds risk.
2. Balance Risk and Value
- All favorites (1.3-1.5 odds): Low total odds but high insurance trigger chance
- Mixed selections (1.5-2.0 odds): Balanced approach
- Higher odds (2.0-3.0): Big payout but less likely to hit "one leg fails"
3. Choose Uncorrelated Events
Different sports, leagues, or time zones reduce correlation between selections.
4. Use Free Bet Refund Wisely
When you receive the free bet refund, extract 70-80% value via matched betting or value selections.
Expected Value Analysis
EV Calculation Complexity
Calculating true EV of acca insurance requires complex probability math:
- Probability all legs win
- Probability exactly one leg loses
- Probability multiple legs lose
- Refund value (70-80% of stake)
Simplified Example (5-Fold, All 1.5 Odds):
- Win probability per leg: 67%
- All win: ~13%
- Exactly one loses: ~33%
- Multiple lose: ~54%
Insurance adds value to the 33% "one leg loses" scenario, worth ~£7-£8 per £10 stake.
Best Acca Insurance Offers
- Bet365: Acca Boost + insurance on football accas
- Betway: Money Back on 5+ leg accas
- Ladbrokes: Acca Insurance on horse racing
- 888Sport: Refund as free bet on football accas