There may be times when you feel the need for some hard currency and all you have in your pocket is loose change and your credit card. No problem, you can always use your credit card to obtain a cash advance. At other times, card issuers may even send you a subtle invitation to make a cash advance. The invitation comes as a convenience or credit card check, and if you do use the check, the amount you write is treated as a cash advance. This could be useful if, for example, the shopkeeper refuses to accept credit card.