What is acca insurance?
Acca insurance refunds your stake — usually as a free bet, up to a cap — if your accumulator loses by just one leg. It’s a common promotion that softens the blow when a single selection lets down an otherwise winning acca.
Example
A 5-fold where 4 legs win and one loses: with acca insurance you get your stake back, often as a free bet up to around £10–£25 depending on the bookmaker.