A balance transfer card moves debt from one card to another, usually at a lower interest rate
A balance transfer is when you move an existing credit card balance to a different card, typically one offering a temporary low or zero interest rate. The new card pays off your old card's balance, and you then owe the new card instead. The main reason people do this is to pause interest charges while they pay down debt — if your current card charges 22% and a balance transfer card charges 0% for 12 months, you save money on interest during that window.
The catch is that balance transfer cards charge an upfront fee, usually 3% to 5% of the amount you transfer. So if you move $5,000, you might pay $150 to $250 just to open the transfer. That fee gets added to your new balance. The card issuer also sets a time limit on the zero or low rate — typically 6 to 21 months depending on the card — and after that period ends, a regular interest rate kicks in.
Balance transfer cards work best if you have a concrete plan to pay down the debt before the promotional rate expires. If you transfer $5,000 at 0% for 12 months and make no payments, you owe the full $5,000 plus the transfer fee when the year ends. If you pay $417 per month, you clear it before interest returns.
Key Takeaways
- Balance transfer cards charge an upfront fee (usually 3% to 5%) but offer zero or low interest for a set period, typically 6 to 21 months.
- The promotional rate applies only to the transferred balance, not to new purchases you make on the card after the transfer.
- You need a credit score of roughly 670 or higher to be considered for most balance transfer cards, though terms vary by issuer.
- The real benefit comes only if you pay down the balance during the promotional period; after it ends, a standard interest rate applies to any remaining balance.
- Compare the length of the promotional period, the transfer fee, and the regular interest rate that follows, because all three affect whether the card saves you money.
How the transfer fee and promotional period affect your savings
The transfer fee is the first cost to calculate. If a card charges 3% and you transfer $3,000, you pay $90 upfront. If another card charges 5% on the same transfer, you pay $150. That $60 difference matters, but only if the second card's promotional period is long enough to make up for it.
The promotional period is how long the zero or reduced rate lasts. A 12-month period gives you a year to pay down debt interest-free. A 21-month period gives you nearly two years. The longer the period, the more time you have to chip away at the balance without interest accruing. However, longer promotional periods sometimes come with higher transfer fees or higher regular interest rates afterward.
Here is a concrete example: Card A charges 3% to transfer and offers 0% for 12 months. Card B charges 5% to transfer and offers 0% for 18 months. If you transfer $4,000, Card A costs $120 upfront and Card B costs $200 upfront — a $80 difference. But if you can only pay $250 per month, you will not clear the balance in 12 months. After 12 months on Card A, interest starts accruing on the remaining balance. On Card B, you have six more months interest-free. For you, Card B saves money despite the higher fee.
Credit score requirements and what happens after approval
Most balance transfer cards require a credit score of at least 670, though some issuers set the bar at 700 or higher. A few cards accept scores as low as 650, but these typically charge higher transfer fees or offer shorter promotional periods. Your credit score is one of the main things the issuer checks to decide whether to approve you and what terms to offer.
When you are approved, the card issuer gives you a credit limit — the maximum you can transfer. This limit is often lower than the limits on regular rewards cards. You then initiate the transfer, either through the new card's website or by calling the issuer. The transfer typically takes 5 to 14 business days to complete. During this time, you still owe your old card, so keep making at least the minimum payment until the transfer posts.
After the transfer completes, your old card balance drops to zero (or close to it, depending on pending charges). Your new card now shows the transferred balance plus the transfer fee. Any new purchases you make on the new card are not covered by the promotional rate — they accrue interest at the card's regular purchase rate when ready. This is why many people use a balance transfer card only for the transfer and avoid making new purchases on it.
What to do when the promotional period ends
When the promotional rate expires, any remaining balance on the card switches to the regular interest rate. If you still owe $1,500 on a card with a 22% regular rate, interest starts accruing at that rate. This is why the length of the promotional period matters so much — it determines how long you have to pay down the balance before interest kicks back in.
If you have not paid off the balance by the time the promotional period ends, you have a few options. You can continue paying on the card at the regular rate, which defeats much of the purpose of the transfer. You can transfer the remaining balance to another balance transfer card, though this means paying another transfer fee and starting a new promotional period. Or you can look into other debt payoff strategies, like a personal loan or a debt management plan through a nonprofit credit counselor.
The best approach is to calculate your payoff timeline before you transfer. If you transfer $6,000 and the promotional period is 12 months, you need to pay at least $500 per month to clear it. If you can only afford $300 per month, a 12-month card will not work for you — look for one with an 18 or 21-month period instead.
Comparing cards: transfer fee, rate length, and regular APR
When you are looking at balance transfer cards, three numbers matter most: the transfer fee (as a percentage), the length of the promotional period (in months), and the regular purchase APR (the interest rate after the promotion ends).
| Factor | What to Look For | Why It Matters |
|---|---|---|
| Transfer Fee | 3% to 5%, sometimes 0% for a limited time | Lower fees mean less money added to your balance upfront. A 0% fee is rare but worth seeking if you find one. |
| Promotional Period | 6 to 21 months of 0% or reduced interest | Longer periods give you more time to pay down debt without interest. Match the period to your payoff timeline. |
| Regular Purchase APR | Typically 16% to 28% after the promotion ends | This is what you pay if you carry a balance after the promotional period. Lower is better, but it matters less if you plan to pay off the transfer before the period ends. |
| Credit Limit | Varies; often lower than rewards cards | You can only transfer up to your credit limit. If you need to transfer $8,000 and your limit is $5,000, you cannot transfer the full amount. |
Do not focus only on the promotional rate. A card with 0% for 21 months but a 5% transfer fee and a 26% regular APR might be better than a card with 0% for 12 months and a 3% fee, depending on how much you can pay each month. Use a calculator to estimate your payoff date and total interest paid under each scenario.
When a balance transfer card makes sense and when it does not
A balance transfer card works well if you have a high-interest balance you can pay down within the promotional period, and you have the discipline not to rack up new debt on the card. It also works if you are consolidating multiple cards — you can transfer balances from two or three cards onto one balance transfer card, which simplifies your payments and locks in a lower rate across all of it.
A balance transfer card does not work if you cannot commit to a payoff plan. If you transfer $5,000 and then make no payments, you will owe the full amount plus interest when the promotional period ends. It also does not work if your credit score is too low to may have access to for a card with a reasonable fee and promotional period. And it does not work if you have a small balance that you can pay off in a few months anyway — the transfer fee will cost more than the interest you would pay on your current card.
Another situation where a balance transfer card may not help: if you are already behind on payments or in default. Most issuers will not approve you if your credit report shows recent missed payments. In that case, a nonprofit credit counselor can help you explore other options, like a debt management plan or negotiating directly with your creditors.
Frequently Asked Questions
Can I transfer a balance from one card to another card from the same bank?
Most banks do not allow you to transfer a balance between their own cards. You typically have to transfer to a card from a different issuer. Check the card's terms before you explore to confirm whether transfers from the same issuer are allowed.
What happens to my old card after I transfer the balance?
Your old card's balance drops to zero, but the account stays open. You can close it if you want, though closing it may lower your credit score slightly because it reduces your total available credit. Many people leave old cards open and unused to keep the account history on their credit report.
Do I have to pay the transfer fee all at once?
The transfer fee is added to your new balance on the balance transfer card. You do not pay it separately — it becomes part of what you owe. If you transfer $3,000 with a 4% fee, your new balance is $3,120, and you pay that off over time along with the transferred amount.
Can I make new purchases on a balance transfer card?
Yes, but new purchases are not covered by the promotional rate. They accrue interest at the card's regular purchase rate when ready. Most people avoid making new purchases on a balance transfer card and use it only to pay down the transferred balance.
What if I cannot pay off the balance before the promotional period ends?
The remaining balance will start accruing interest at the regular rate. You can continue paying it down at that rate, transfer the remaining balance to another balance transfer card (and pay another transfer fee), or explore other options like a personal loan or credit counseling.