If you happen to pay more than you owe during a balance transfer, the bank that issues the newly paid-off credit card will send you a refund for the overage. This can happen for many reasons. You could accidentally initiate a transfer for more than what you owe. You could also put a transfer through without considering any rewards you have available to you that would lower your account balance. The most common reason why people end up paying more than they owe is that a balance transfer can take up to three weeks to complete. During that time, you are still liable for any payments due. If you miss a payment, you could find yourself with a late payment fee and a drop in your credit score. So, instead of risking that, many people choose to submit at least the minimum payment due. Once the balance transfer arrives, they have overpaid the amount of the minimum payment that was due. If that happens, you can take one of two courses of action. You can allow the bank to keep the money, and you will have a credit for that amount on your account, or you can request that the bank send you a check for the overage.