Churning credit cards involves getting multiple new credit cards to earn the welcome bonuses and then stopping using them or even canceling them, only to repeat the process again and again. While card churning gives you the ability to accumulate reward points, miles or cash back quickly, it also has the potential to hurt your credit score. And you run the risk of accumulating debt.
Credit card issuers don’t look at churning too kindly. Several follow measures to make the process more difficult and less profitable for consumers. Some even shut down accounts upon detecting such activity.