December 26, 2025

WSM Casino is rewarding accumulator players with its Combo Boost promotion, offering up to 40% extra winnings on qualifying acca bets. The more selections you stack, the bigger the boost applied to your payout, paid out as cash, with no wagering requirements.

How it works

Build an accumulator with three or more selections, each priced at minimum odds of 1.50, and place your bet with real money. If the acca wins, WSM Casino automatically adds a boost to your winnings based on the number of selections:

  • 3-4 selections: 5% boost
  • 5-6 selections: 10% boost
  • 7-9 selections: 20% boost
  • 10-13 selections: 30% boost
  • 14+ selections: 40% boost

The boost is applied once all results are confirmed and the bet is fully settled.

Significant Terms

  • The promotion applies to accumulator bets only (3+ selections, min odds 1.50 per selection).
  • Cash bets qualify; bets using bonus funds, Free Bets or enhanced odds do not.
  • Cashed Out or partially cashed out bets are not eligible.
  • If a selection is void, the boost still applies, recalculated to match the number of winning selections.
  • There’s no limit to how many times you can take part.
  • Boosted winnings are paid as cash and added directly to your payout.

Read the full terms and conditions of the promotion on WSM Casino.