It's possible to pay down debt with a credit card. However, it may not be the best option unless you can make good use of an extended no-interest period of 12 months or longer. Keep in mind that many of the best low- or no-interest offers are introductory and reserved for individuals with good credit or better. If you're overwhelmed by debt, that could hurt your credit score and you may have trouble getting approved for a no-interest or low-balance-transfer card.