Accumulator & Parlay Bets Explained

An accumulator — also called a parlay or acca — combines several selections into one bet. The potential return is bigger because the odds multiply, but every leg has to win for the bet to pay. This guide explains the mechanics with hypothetical numbers only.

How an accumulator is built

1. Pick two or more selections (the “legs”), each from a different event.
2. Add them to one slip and choose the accumulator option.
3. The decimal odds of every leg are multiplied together to set the price.
4. Place one stake on the combined bet.

How the payout multiplies

In decimal odds, the combined price is the product of all the legs. The more legs you add, the larger the potential return — and the lower the chance that every leg lands.

Why all legs must win

An accumulator is all-or-nothing: a single losing leg sinks the whole bet, no matter how many other legs won. This is the core trade-off — high reward for low probability.

Voided legs

If one leg is voided (for example a postponed match), it is usually removed and the accumulator is recalculated on the remaining legs at the reduced price, rather than losing outright. Check the specific market rules.

Accumulators across sports

You can combine legs from football, basketball, American football and more on a single slip. If you are unsure how the prices combine, read how betting odds work first.

🔞 18+ only. Examples are hypothetical and for explanation only — they are not betting advice or real odds. Please gamble responsibly.

FAQ

The entire accumulator loses. Every selection must win for an accumulator to pay out.

Multiply the decimal odds of all legs together, then multiply by your stake. For example 1.50 × 2.00 × 1.80 = 5.40 times the stake.

A voided leg is usually removed and the accumulator is recalculated on the remaining legs, rather than counting as a loss. Always check the market rules.

Last updated: 2026-06-15