Mostbet’s Accumulator Booster is an automated odds enhancement tool that increases potential returns on multi-event bets. This innovative feature activates automatically when players combine four or more selections in a single betting slip, providing progressively higher odds boosts as more events are added.
Unlike standard accumulator bets where odds are simply multiplied together, the Accumulator Booster applies a mathematical formula that increases the overall coefficient, resulting in higher potential payouts without increasing stake amounts.
How the Accumulator Booster Works
The Accumulator Booster activates through a straightforward process:
- Build Your Accumulator: Select at least four events from either pre-game or live betting markets
- Meet Minimum Odds: Each selection must have odds of at least 1.2
- Automatic Activation: The booster applies automatically when requirements are met
- Increased Returns: Total betting slip odds increase according to the number of selections
When these conditions are met, players will see “Express-booster” and the additional odds increment displayed directly on their betting slip.
Accumulator Booster
Boost Calculation Formula
Mostbet uses a specific mathematical formula to determine the boost size:
1 + 0.01 * (N – 3)
Where:
- N = the number of events in your betting slip
- The result represents the multiplier applied to your accumulator odds
This formula means:
- 4 events = 1.01x boost (1% increase)
- 5 events = 1.02x boost (2% increase)
- 6 events = 1.03x boost (3% increase)
- 10 events = 1.07x boost (7% increase)
The boost percentage continues to increase with each additional selection, encouraging players to build larger accumulators for maximum benefit.
Practical Example
Here’s how the Accumulator Booster impacts a real bet:
Standard 4-Event Accumulator:
- Event 1: Ukraine vs Serbia (1.33)
- Event 2: Croatia vs Portugal (1.77)
- Event 3: Italy vs Austria (1.33)
- Event 4: Serbia vs Portugal (1.33)
- Standard total odds: 4.17
- With Express-booster (1% increase): 4.21
- On a €100 stake: Extra €4 potential winnings
6-Event Accumulator:
- Same 4 events plus 2 more at similar odds
- Standard total odds: 7.38
- With Express-booster (3% increase): 7.60
- On a €100 stake: Extra €22 potential winnings
The financial benefit increases substantially with larger accumulators, creating significant value for multi-selection bettors.
Key Benefits of the Accumulator Booster
Enhanced Returns
Receive higher potential payouts without increasing your stake amount.
Automatic Application
No need to opt in or activate the feature manually – it applies automatically when conditions are met.
Progressive Rewards
The more selections added to your accumulator, the higher the percentage boost applied.
Flexible Market Selection
Combine both pre-game and live betting markets to reach the four-selection minimum.
Important Terms and Conditions
Several important conditions apply to the Accumulator Booster:
- Minimum Events: Four or more selections required to activate the boost
- Minimum Odds: Each selection must have odds of at least 1.2
- Maximum Boost: The maximum Accumulator Booster odds are capped at 1.2 (20% increase)
- Bonus Compatibility: Bets placed using the Accumulator Booster do not count toward first deposit bonus wagering requirements
- Market Eligibility: Available for both pre-game and live betting markets
These conditions ensure the feature provides balanced value while maintaining betting integrity.

How does accumulator Booster work
Strategy Tips for Maximum Benefit
Focus on Value Selections
Choose events with value odds rather than simply adding selections to increase the boost percentage.
Balance Risk and Reward
While more selections increase the boost, they also reduce the overall probability of winning.
Consider Medium-Odds Selections
Events with odds between 1.5-2.5 offer a good balance of boost impact and win probability.
Combine Pre-Game and Live Markets
Utilize both market types to find the best value opportunities for your accumulator.