Learn what accumulator bets are and how they work.
An accumulator (often “acca”) is one bet made up of multiple selections in different events or markets. You place one stake, and every selection must win for the bet to pay out. Because the prices multiply together, the potential return can be much higher than placing the same legs as singles.

You’ll see accas described by their “fold”. Common names: 2 selections = Double; 3 = Treble; 4 = Fourfold; 5 = Fivefold; 6+ = Sixfold, Sevenfold, and so on.
With decimal odds, the combined price is simply the legs multiplied together. Example: legs at 1.80, 2.10 and 1.95 have combined odds of 1.80 × 2.10 × 1.95 = 7.37. A £10 stake at 7.37 returns £73.71 (profit £63.71) if all three win.
If any selection loses, the whole accumulator loses. Voided or postponed legs are usually settled at odds of 1.0, which effectively reduces the acca by one leg. Most bookmakers let you mix sports and markets, but they may restrict related selections so always check the site’s rules.
Future guides will cover how to lay an accumulator, however, if you want to learn how to lay an accumulator now, keep reading.
The best and easiest method to lay an accumulator is to use the Smarkets Acca Laying feature. This is a feature built into Smarkets to allow you to lay an accumulator as one bet. Read the guide below to learn how to do it.
There is also a more advanced method to laying accumulators which doesn't require high liquidity on the exchange. This method is 'Sequential Laying' and it requires all selections to be at different times without overlapping kick-off/finish times. Read the guide below to learn how to do it.