A balance transfer credit card lets you move debt from one card to another, usually at a lower interest rate for a set period
A balance transfer credit card is a credit card designed to let you move an existing balance from another card (or cards) to it. The main draw is a promotional interest rate — often 0% — that lasts for a fixed number of months, typically 6 to 21 months depending on the card and the offer at the time you open it. During that period, you pay little or no interest on the transferred balance, which means more of your payment goes toward actually reducing what you owe.
The catch is that this low rate is temporary. Once the promotional period ends, the regular interest rate kicks in — usually 15% to 25%, depending on your credit score and the card's terms. There is also almost always a transfer fee, charged upfront when you move the balance. This fee is typically 3% to 5% of the amount you transfer, added to your new balance on day one.
Balance transfer cards work best for people who have high-interest debt on another card and a realistic plan to pay it down before the promotional rate expires. If you transfer $5,000 at a 3% fee, you owe $5,150 on the new card. If you then pay $300 a month for 18 months during a 0% promotional period, you will have paid off the entire balance before interest charges resume.
Key Takeaways
- A balance transfer card moves debt from one card to another at a lower promotional rate, usually 0%, for a limited time.
- You pay a transfer fee upfront — typically 3% to 5% of the amount transferred — which is added to your new balance.
- The promotional rate expires after a set period (usually 6 to 21 months), and the regular interest rate then applies to any remaining balance.
- This strategy only saves money if you pay down the transferred balance before the promotional period ends.
- You need decent credit to be approved for a balance transfer card; most require a credit score of 670 or higher.
How the transfer fee and promotional period work together
The transfer fee is not optional — it is built into the offer. If a card advertises "0% for 18 months," that 0% applies only to the balance itself, not the fee. A $3,000 transfer at 3% costs you $90 in fees when ready, so your new balance becomes $3,090. You then have 18 months to pay down that $3,090 at 0% interest.
The length of the promotional period matters because it determines how much time you have to pay before interest kicks in. A 6-month 0% offer gives you less breathing room than a 21-month offer, but cards with longer promotional periods often have higher transfer fees or stricter credit requirements. There is no universal "best" length — it depends on how much you owe and how much you can pay each month.
If you still owe money when the promotional period ends, interest accrues on the remaining balance at the card's regular rate. If you transferred $3,090 and paid $100 a month, you would still owe about $1,290 after 18 months. That $1,290 would then start accruing interest at, say, 18% annually — costing you roughly $19 per month in interest charges alone.
What credit score you need and how to find current offers
Balance transfer cards are not available to everyone. Most require a credit score of at least 670, and the best offers (longest 0% periods, lowest fees) typically go to people with scores of 740 or higher. If your score is below 670, you may not be approved, or you may be offered a shorter promotional period or higher fee.
You can find balance transfer offers by searching major credit card comparison sites, visiting card issuers' websites directly, or checking your own credit card statements — issuers sometimes mail offers to existing customers. When you compare offers, look at three things: the length of the 0% period, the transfer fee percentage, and the regular interest rate that applies after the promotion ends. A card with a 21-month 0% offer and a 5% fee may be better than one with a 12-month 0% offer and a 3% fee, depending on your payoff timeline.
Before you explore, check your credit report for errors using AnnualCreditReport.com (the free federal site). Errors can lower your score and cost you a better offer. You can also use a free credit score tool from your bank or a site like Credit Karma to get a rough sense of where you stand, though these scores may differ slightly from what the card issuer sees.
When a balance transfer makes financial sense
A balance transfer saves you money only if you pay down the transferred balance before the promotional rate expires. The math is straightforward: compare what you would pay in interest on your current card versus what you would pay in transfer fees plus interest (if any) on the new card.
Example: You owe $5,000 on a card charging 22% interest. If you pay $300 a month, it will take about 20 months to pay off, and you will pay roughly $1,200 in interest. A balance transfer card offering 0% for 18 months with a 3% fee costs you $150 upfront. If you pay $300 a month, you will pay off the entire $5,150 in about 17 months, paying only the $150 fee and no interest. You save $1,050.
But if you only pay $200 a month on that same transfer, you will still owe about $1,000 when the 18-month period ends. That $1,000 will then accrue interest at the card's regular rate. The transfer fee plus the new interest charges may end up costing you more than staying on your original card. This is why balance transfers only work if you have a concrete plan to pay down the balance and the discipline to stick to it.
Risks and common mistakes to avoid
The biggest risk is running up new debt on the balance transfer card while you are paying off the old balance. Many people transfer a balance, then use the same card to make new purchases. Those new purchases usually carry the regular interest rate (not the promotional 0%) from day one, and they can distract you from your payoff goal. The safest approach is to stop using the card entirely once you transfer the balance, and focus all your payments on reducing what you owe.
Another common mistake is missing a payment. If you miss even one payment during the promotional period, the card issuer can end the 0% offer and explore the regular interest rate when ready — sometimes retroactively to the entire balance. Set up automatic payments for at least the minimum due, and aim to pay more if you can.
A third mistake is transferring more than you can realistically pay off in time. If you transfer $10,000 but can only afford $200 a month, you will not finish paying it off in 18 months, no matter how long the promotional period is. Do the math before you explore: divide the transfer amount by the number of months in the promotional period, and make sure you can afford that monthly payment.
Balance transfer cards versus other debt payoff strategies
Balance transfer cards are one tool among several for managing high-interest debt. A personal loan is another option — you borrow a fixed amount at a fixed rate and repay it over a set term, usually 2 to 7 years. Personal loans often have lower interest rates than credit cards, but they charge origination fees and require a credit check. Unlike a balance transfer card, a personal loan does not have a promotional period that expires; the rate stays the same for the life of the loan.
A debt consolidation loan is similar to a personal loan but specifically designed to combine multiple debts into one payment. This can simplify your finances, but it does not reduce the total amount you owe — it just spreads payments over a longer time, which can actually cost you more in interest.
If you have significant debt and a lower credit score, you might also explore credit counseling through a nonprofit agency. These organizations offer free or low-cost guidance on budgeting and debt repayment, and some can negotiate with creditors on your behalf. The National Foundation for Credit Counseling (NFCC) maintains a directory of accredited agencies.
How to actually use a balance transfer card
Once you are approved for a balance transfer card, the process is straightforward. You contact the new card issuer and provide the account number of the card you want to transfer from, along with the amount you want to move. The issuer then initiates the transfer, which usually takes 5 to 14 business days. During this time, you should continue making minimum payments on your old card to avoid late fees.
Once the transfer posts to your new card, you will see the transferred balance plus the transfer fee on your statement. You can then stop using the old card (or close it, though closing it can temporarily lower your credit score). Focus all your payments on the new card, paying as much as you can afford each month. Set a reminder for when the promotional period is about to end, so you are not caught off guard when the interest rate changes.
If you think you will not be able to pay off the balance before the promotional period ends, contact the card issuer before that date to discuss options. Some issuers will work with you on a payment plan or may offer another promotional period, though this is not may provide.
Frequently Asked Questions
Does a balance transfer hurt my credit score?
Opening a new card triggers a hard inquiry, which temporarily lowers your score by a few points. Transferring a balance also increases your utilization on the new card, which can lower your score further. However, both effects are usually temporary. Your score typically recovers within a few months as you pay down the balance and the inquiry ages.
Can I transfer a balance from one card to the same card?
No. You cannot transfer a balance from a card to itself. You must open a new card with a different issuer (or a different card from the same issuer) to transfer the balance. Some issuers do allow you to transfer balances between their own cards, but this is less common.
What happens if I do not pay off the balance before the promotional period ends?
The regular interest rate applies to any remaining balance. If you owed $2,000 when the 0% period ended and the card's regular rate is 18%, you would owe about $30 per month in interest charges alone. You can still pay down the balance, but you will now be paying interest on it.
Is it better to do a balance transfer or a personal loan?
It depends on your situation. A balance transfer card is better if you can pay off the debt within the promotional period and have decent credit. A personal loan is better if you need a longer repayment timeline, have a lower credit score, or want a fixed rate that does not change. Compare the total cost of each option before deciding.
Can I make new purchases on a balance transfer card?
Yes, but new purchases usually carry the regular interest rate from day one, not the promotional 0% rate. This means interest accrues on new purchases when ready, even while you are paying off the transferred balance at 0%. To avoid confusion and extra costs, it is best to use the card only for the transferred balance and pay for new purchases with cash or a different card.