A balance transfer moves debt from one credit card to another — usually to take advantage of a promotional 0% (or very low) introductory APR. For a fixed window, typically 12-21 months, every dollar you pay goes toward the principal instead of interest. Done right, this can save hundreds or thousands of dollars. Done without a plan, it can leave you with a leftover balance at a high regular rate and a fee you didn't fully recoup.
How the 0% intro period works
When you open a balance transfer card (or use an existing card's transfer offer), you authorize the new issuer to pay off some or all of your old card's balance. That amount then sits on the new card at 0% APR for the promotional period — commonly 12, 15, 18, or 21 months. During this window, your monthly payments reduce the principal directly, with no interest charges eating into them. New purchases on the card may or may not be covered by the same promotional rate, so check the terms — many cards apply 0% only to the transferred balance, not new spending.
Balance transfer fees: the cost of the deal
Almost all balance transfer offers charge a one-time fee, typically 3-5% of the amount transferred (some cards charge a flat minimum, like $5 or $10, if that's higher). On a $6,000 transfer, a 3% fee is $180; a 5% fee is $300. This fee is usually added to your new balance immediately. The transfer is worth it when the interest you'd have paid on your old card during the intro period exceeds this fee — which is almost always true if you were carrying a balance at 20%+ APR for more than a few months. The Balance Transfer Calculator runs this comparison for your specific numbers.
What happens when the intro period ends
Any balance remaining when the promotional period expires starts accruing interest at the card's regular APR — which for balance transfer cards is often in the 18-29% range, similar to a standard rewards or cash-back card. There's no grace period for this transition; interest typically begins accruing the day after the intro period ends.
The best approach is to divide your transferred balance by the number of months in the intro period and pay at least that much each month, ensuring the balance hits zero right as the promotional rate expires. If you can't fully pay it off, having a plan for the remaining balance — another transfer, a personal loan, or simply continuing to pay down the new regular APR — keeps the math from working against you.
Qualification requirements
Balance transfer cards with the longest 0% periods and best terms are generally reserved for applicants with good to excellent credit (typically 670+ FICO, often 700+ for the longest offers). The new card's credit limit also has to be high enough to accept the transfer — you generally can't transfer more than your approved limit (minus the fee). It's also worth noting: you usually can't transfer a balance between two cards from the same bank, since the goal is to move debt away from one issuer to another.
Try the Calculators
Related Guides
Frequently Asked Questions
Can I transfer a balance between two cards from the same bank?+
Usually no. Most issuers prohibit transferring a balance between their own cards — the whole point of a transfer offer is to attract a new customer's debt from a competing bank.
Does a balance transfer hurt my credit score?+
Opening a new card triggers a hard inquiry, which can temporarily lower your score by a few points. However, lowering your utilization on the old card (and spreading debt across more available credit) can help your score in the medium term, especially once the balance is paid down.
What if I can't pay off the balance before the intro period ends?+
The remaining balance starts accruing interest at the card's regular APR — often 18-29%. At that point, compare the new regular APR to your other options: another balance transfer (if you still qualify), a personal loan, or simply continuing to pay it down. The Payoff Calculator can model the remaining balance at the new APR.
Are there cards with no balance transfer fee?+
Some cards occasionally offer fee-free transfers for a limited time, especially for new cardholders. These are less common than fee-based offers (3-5%) but worth searching for if you're shopping for a transfer card, since they remove the only real cost of the strategy.