Some of the most important factors to consider before applying for a balance transfer card include the length of the intro APR period, the regular APR after the intro period ends and any balance transfer fee. While it’s possible to find a card without a balance transfer fee, the intro periods for those cards tend to be shorter. Otherwise, a fee of 3% to 5% of the amount transferred will be added to your balance. Finally, while this shouldn’t be your primary concern when looking for a balance transfer card, a balance transfer card that also earns rewards might be a good choice if you want to keep using it once the transferred balance is paid off.