A lottery bonus code is a string of characters, usually numbers and letters associated with the bonus in question. For instance, a lotto site offering a $50 deposit bonus for new players may provide the code LOTTO50 or a similar key. The code must be used when depositing funds to a lotto site to unlock the free $50. The lottery site decides whether or not a code is necessary to open the bonus.
Some sites give out coupon codes to add a fun element when claiming the bonus. In most cases, no-deposit bonuses do not require the promo code. One of the most commonly offered bonuses is the match bonus, which comes as a percentage of the initial deposit, e.g., 50%. If a player deposits $300, the lotto site gives out an additional $150 for wagering.
Another popular bonus code is the refer-a-friend promo code. The bonus amount may vary and requires a referral sign-up for the player to claim the reward. Once in a while, online lotteries issue special promotions such as weekly reload bonuses, which are time-limited or given through a tournament.