The easiest way to avoid interest charges is to not incur the charge at all. That means either paying your credit card balance in full each month, or taking advantage of a 0% introductory APR credit card, like those listed above. Whether your card features a 0% introductory period on new purchases, balance transfers, or both, you won’t pay finance charges of any kind during your set period — which usually runs between six and 18 months. But once that period ends, your card’s issuer will immediately begin calculating interest charges based on your average daily balance. Note that canceling a credit card will not stop interest charges from accruing on your account. The only way that can happen is when the balance is paid in full, but you may be able to negotiate a lower APR. You also have the option of using a prepaid credit card, which will allow you to make purchases on the web and in other scenarios where cash won’t cut it. However, this is not a line of credit – you deposit your own money onto the card to use when needed. You will never be charged interest, though you may be charged a monthly service fee.