Accumulator and parlay bets — how combined odds work
An accumulator (parlay) multiplies decimal odds across legs. Three legs at 1.50, 1.80 and 2.00 combine to 1.50 × 1.80 × 2.00 = 5.40 before any book-specific caps or boosts — we describe the structure, not a promo.
One losing leg usually loses the ticket. A voided leg is handled by the book’s accumulator rules: some reprice the remaining combo, some void the whole slip. That language is on the book, not on this page as a universal law.
Correlated legs (same match, overlapping markets) are often restricted or priced differently. Books publish their own correlation / related-contingency rules. We do not invent a cross-book correlation matrix.
Crypto funding does not change parlay math. The same decimal board applies whether the balance is USDT, BTC or ETH. For bet-type overview see also our evergreen bet-types guide; this page is the accumulator deep-dive.
How we read terms
Primary source first. For each book we encode a deny list from that book’s own terms, AML page, or restricted-jurisdiction article. Secondary “reviews” are not the list.
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