Your credit card limit is the maximum amount you can borrow at a time. Increasing your limit could potentially increase your spending power and also help improve your credit score by lowering your credit utilization rate — the percentage of your available credit that you're using at a given time. After your account has been open for at least a few months, you can technically request a credit limit increase at any time. But if you want to maximize your odds of getting approved, there are certain factors to ...