The average American household with credit card debt owes just over $16,000. At an average APR of about 16%, this implies that the average household with credit card debt ends up paying more than $2,500 on interest every year, or $213 monthly. Transferring that balance to the right credit card can dramatically cut, or eliminate, that expense.There are two main reasons to consider a balance transfer with your existing credit card debt -- consolidation and saving money.