Work Out Any Accumulator
Why Acca Maths Punishes Long Combinations
An accumulator multiplies the odds of every leg — and multiplies the bookmaker margin too. If each leg carries a typical 5% overround, a double gives the house roughly a 10% edge, a five-fold roughly 23%. That is why accas are the most profitable product bookmakers sell, and why the sensible version is short (2–3 legs), staked small, and treated as entertainment.
Frequently Asked Questions
How are accumulator odds calculated?
Multiply the decimal odds of every leg together, then by your stake. Four legs at 1.8, 2.1, 1.5 and 3.0 = 17.01 combined odds.
What happens if one leg of my acca loses?
The whole bet loses. Every leg must win; one beaten favourite sinks the lot.
Do bookmaker margins stack in an acca?
Yes. Roughly 5% per leg compounds: a five-fold can carry a ~23% house edge against you.