Advance-deposit wagering

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Advance-deposit wagering (ADW) is a form of gambling on the outcome of horse races in which bettors must fund their account before being allowed to place bets. ADW is often conducted online or by phone. In contrast to ADW, credit shops allow wagers without advance funding; accounts are settled at month-end. Racetrack owners, horse trainers and state governments sometimes receive a share of ADW revenues.

It typically involves betting on horse or greyhound racing. Wagering may take place through parimutuel pools.