Credit Card Mistakes &amp; The Average Credit Card Debt of 2014 – Making Sense Of Cents. The average household in the United States (who has debt) has an average credit card debt of $15,611. In this post, I discuss the different credit card mistakes that can lead to credit card debt. http://www.makingsenseofcents.com/2014/12/credit-card-mistakes-that-can-lead-to-debt.html