No, churning credit cards is not illegal in Canada. While some are on the fence about how ethical the practice is, you are legally allowed to take advantage of credit card welcome offers as many times as you wish, as long as you do not violate the terms and conditions of your cards.  If you choose to try credit card churning, however, do remember that it may have negative consequences on your credit score and overall financial health. If you’re new, start small with only a few credit cards and see if it is for you!