A 0% balance transfer can make a $10,000 credit card balance look dramatically less expensive, but “0%” does not automatically mean free. The interest rate may drop to zero during the promotional period while a balance-transfer fee still adds money to the debt. That distinction matters because a few hundred dollars can turn an apparently perfect deal into a much less exciting one.
The appeal makes sense. Someone carrying a $10,000 balance at a high interest rate could move that debt to a card offering 0% introductory APR and use the promotional window to attack the principal instead of watching interest pile up. But the offer deserves a closer look before the balance moves, because the fee, payoff schedule, regular APR and other terms all affect the actual cost.