What a balance transfer is and how it works

A balance transfer moves debt from one credit card to another, usually one with a lower interest rate. You request the transfer from the new card's issuer, they pay off your old card's balance, and you owe that amount to the new card instead. The goal is to save money on interest while you pay down the debt.

Most balance transfer cards offer a promotional interest rate — often 0% — for a set period, usually 6 to 21 months depending on the card. After that period ends, the regular interest rate kicks in. The catch is that balance transfers almost always charge a fee, typically 3% to 5% of the amount you transfer, added to your new balance on day one.

Balance transfers work best if you have a concrete plan to pay down the debt during the promotional period. If you transfer $5,000 at 0% for 12 months, you need to pay roughly $417 per month to clear it before interest starts. If you don't, you'll owe interest on whatever remains.

Key Takeaways

  • A balance transfer moves your debt to a new card with a lower or 0% interest rate for a promotional period, usually 6 to 21 months.
  • Balance transfer fees range from 3% to 5% of the amount transferred and are added to your new balance when ready.
  • You need a credit score of roughly 670 or higher to be considered for most balance transfer cards, though requirements vary by issuer.
  • The promotional rate applies only to the transferred balance, not to new purchases you make on the card after the transfer posts.
  • You must pay down the transferred balance before the promotional period ends, or you'll owe the regular interest rate on what remains.

Check your credit score and find cards that fit your situation

Balance transfer cards are designed for people with good to excellent credit. Most issuers require a credit score of at least 670, though some accept scores as low as 650 and others want 700 or higher. You can check your credit score free through your bank's website, through a service like Credit Karma or AnnualCreditReport.com, or by asking your current card issuer directly — many show your score in your online account.

Once you know your score, compare balance transfer cards based on three things: the length of the promotional period, the size of the transfer fee, and whether there's a fee for new purchases. A card offering 0% for 18 months with a 3% transfer fee is generally better than one with 0% for 12 months and a 5% fee, but the math depends on your specific debt and how fast you can pay it down.

Read the card's terms carefully. Some cards charge a flat fee instead of a percentage — for example, $5 per transfer. Others waive the transfer fee for the first 60 days after opening the account. A few cards offer 0% on both transfers and new purchases for the same period; most charge interest on new purchases from day one, even during the promotional period.

Gather the information your new card issuer will need

When you open a balance transfer card, you'll provide the transfer details during the process or shortly after approval. Have this information ready: the name of your current card issuer, your account number on that card, and the exact amount you want to transfer. If you're transferring from multiple cards, you'll list each one separately.

The issuer will also ask for the billing address associated with your old card. This helps them confirm they're paying the right account. You don't need to contact your old card issuer yourself — the new issuer handles the payment directly.

Some issuers let you request the transfer online through your new account, while others require you to call or mail a form. Check your card's welcome materials or log into your account to see which method applies to you.

Request the balance transfer and wait for it to post

Once your new card is open and you've decided how much to transfer, initiate the request. If you're doing this online, log into your new card's account, find the "Balance Transfer" or "Transfers" section, and enter the old card's details and the transfer amount. The system will show you the transfer fee and confirm the promotional rate and period before you submit.

If you're calling, have your old card number and the transfer amount ready. The representative will walk you through the details, confirm the fee, and process the request on the spot. Some issuers mail you a form with a check or account number you can use to pay the old card directly, though this is less common now.

The transfer typically takes 5 to 14 business days to post. During this time, your old card balance remains unchanged — you're still responsible for making at least the minimum payment on it until the transfer clears. Once the transfer posts to your new card, you'll see the transferred amount on your new card statement and a corresponding payment on your old card.

Understand what happens after the transfer posts

After the transfer clears, you have two balances to think about: the transferred balance on your new card (which has the promotional rate) and any remaining balance on your old card (which still accrues interest at the old rate). Pay off the old card as quickly as you can, since it's no longer getting any benefit from the transfer.

On your new card, the promotional rate applies only to the transferred balance. Any new purchases you make on that card will accrue interest at the regular rate when ready, even during the promotional period. To avoid confusion, consider using a different card for new purchases while you're paying down the transfer.

Make a payment plan for the transferred balance. Divide the total (including the transfer fee) by the number of months in the promotional period to see what you need to pay each month. Set up automatic payments if your issuer offers them — this removes the risk of missing a payment and triggering a penalty rate increase.

Watch the promotional period end date and plan ahead

Your card statement will clearly show when the promotional period ends. Mark this date on your calendar and know what the regular interest rate will be after it expires — this information is in your card agreement or online account.

If you can't pay off the entire transferred balance before the promotional period ends, you have a few options. You can transfer the remaining balance to another 0% card if you're approved, though you'll pay another transfer fee. You can pay down as much as possible before the important date and accept interest on what remains. Or you can request a lower-rate personal loan to pay off the card entirely, though this is a separate financial product with its own terms.

The worst outcome is letting the balance sit on the card after the promotional period ends without a plan. Interest will accrue on the full remaining balance at the regular rate, which can be 15% to 25% depending on your creditworthiness and the card.

Avoid common mistakes that cost money

The most expensive mistake is missing a payment. If you pay late, many issuers will cancel your promotional rate and charge you a penalty rate — sometimes 29.99% — on the entire transferred balance. Set up automatic payments or calendar reminders to avoid this.

Another mistake is transferring more than you can realistically pay down. If you transfer $10,000 but can only afford $200 per month, you'll pay off only $2,400 in 12 months, leaving $7,600 to accrue interest. Do the math before you transfer.

Don't assume the promotional rate applies to new purchases. It doesn't. If you use the card for groceries or gas during the promotional period, those charges accrue interest when ready at the regular rate. Keep new purchases to a minimum or use a different card.

Finally, don't close your old card when ready after the transfer posts. Closing it can hurt your credit score by reducing your available credit and shortening your credit history. Leave it open with a zero balance.

Frequently Asked Questions

Can I transfer a balance from one card to the same issuer?

Most issuers don't allow you to transfer a balance from another card they issued to you. You can transfer between different issuers — for example, from a Chase card to a Citi card — but not within the same company. Check your new card's terms to confirm.

What if my transfer is denied?

A transfer can be denied if the issuer suspects fraud, if your credit score dropped since you opened the account, or if you've missed recent payments. Contact the issuer to ask why. If it's a fraud hold, you can verify your identity and resubmit. If it's a credit issue, you may need to wait and try again later.

Does a balance transfer hurt my credit score?

A balance transfer has a small, temporary impact. Opening a new card creates a hard inquiry and lowers your average account age, both of which dip your score slightly. However, moving debt off your old card lowers your credit utilization ratio, which helps your score. The net effect is usually a small dip for a few months, followed by improvement as you pay down the transferred balance.

Can I transfer a balance if I'm behind on payments?

Most issuers won't approve a balance transfer if you have recent late payments on your credit report. You'll need to bring your account current and wait at least a few months before explore. Some issuers are stricter than others, so check their requirements before you explore.

What happens if I pay off the balance before the promotional period ends?

Paying off early is the best outcome — you'll owe no interest on the transferred amount. The promotional period ends, but you have no balance left, so the regular rate doesn't matter. You'll only owe interest on any new purchases you made during the promotional period.