One of the most appealing offers used by online casinos is the no deposit bonus. Although a small bonus, it serves to attract a large number of new players by guaranteeing them a free sum of money or an offer with value (e.g. free spins), subject to completing the terms and conditions set by the individual casino.
If you attempt to withdraw money before fulfilling the wagering requirements, the casino won't allow it. Wagering requirements, also known as "playthrough" requirements, are conditions set by online casinos on their bonuses and promotions to avoid potential misuse.