Cashback bonuses are legal in Canadian casinos. In Canada, online gambling falls under provincial jurisdiction, and each province has its own set of regulations regarding online casinos. However, there are no specific laws that prohibit cashback bonuses in Canadian casinos. As long as the online casino is licensed and operates within the legal framework of the province, they are allowed to offer cashback bonuses to players. It's important for players to choose reputable and licensed online casinos that comply with the laws and regulations of their respective provinces to ensure a safe and legal gambling experience.