Credit cards are convenient, but they can also be misunderstood as a spending tool without realising there are limits on what you can do with the card without incurring additional costs. The best way to understand hidden costs or costs associated with credit card spends is to read the terms and conditions mentioned with the monthly card statement. One of the biggest challenges a card user faces is to understand the impact of late payment, especially the interest charged on late payments. Here are some of the other charges you should be aware of: