A line of credit shares several similarities with a credit card. Both credit options give you access to a specific amount of credit. You then have to make repayments, potentially with added interest, and you can use up to that same credit limit again. Both lines of credit and credit cards can be secured with collateral or be unsecured. However, lines of credit may come with various upfront fees compared to credit cards. They also typically don’t offer rewards or cash back, while many credit cards do.