What a balance transfer actually does

A balance transfer moves the debt you owe on one credit card to another card, usually one with a lower interest rate. You contact the new card issuer, give them your old card details, and they pay off that balance on your behalf. You then owe the new card issuer instead of the old one. The point is to reduce the interest you pay while you work down the debt.

Most balance transfer cards offer a promotional period — often 0% interest for 6 to 21 months, depending on the card and the issuer. After that period ends, the regular interest rate kicks in. There is almost always a transfer fee, usually 3% to 5% of the amount you move, charged upfront and added to your new balance.

A balance transfer only makes financial sense if the interest you save during the promotional period exceeds the transfer fee you pay. If you owe $5,000 at 22% interest and move it to a card with 0% for 12 months and a 3% fee, you pay $150 upfront but save roughly $1,100 in interest over the year — a net gain of $950. If you only save $100 in interest, the transfer loses money.

Key Takeaways

  • A balance transfer fee of 3% to 5% is charged upfront and added to your new balance, so calculate whether the interest saved during the promotional period justifies that cost.
  • The promotional 0% period typically lasts 6 to 21 months, after which the regular interest rate applies to any remaining balance.
  • You must have a credit score in the mid-600s or higher to be approved for most balance transfer cards, and the card issuer will pull a hard inquiry on your credit report.
  • If you do not pay off the transferred balance before the promotional period ends, you will owe interest on whatever remains at the card's regular rate.
  • Balance transfers work best when paired with a concrete plan to pay down the debt during the interest-free window, not as a way to delay payment indefinitely.

Check your credit score before you start

Balance transfer cards are designed for people with good to excellent credit. Most issuers require a credit score of at least 650 to 670, though some accept scores as low as 600. If your score is below 600, you are unlikely to be approved, and even if you are, the interest rate offered may not be much better than what you currently pay.

You can check your own credit score for free through AnnualCreditReport.com, which is the only federally authorized site for free credit reports. You can also check your score through your bank's website or through free services like Credit Karma, though those scores may differ slightly from the official FICO score a card issuer will see.

When you explore for a balance transfer card, the issuer will perform a hard inquiry on your credit report. This temporarily lowers your score by a few points and stays on your report for about a year. If you are rejected, that inquiry still counts, so explore to only one or two cards rather than several at once.

Find a balance transfer card and understand the terms

Balance transfer cards are offered by most major issuers: Chase, American Express, Capital One, Discover, Citi, and Bank of America all have options. The key numbers to compare are the length of the promotional period, the transfer fee, and the regular interest rate that applies after the promotion ends.

A longer promotional period gives you more time to pay down the debt without interest accruing. A 0% offer for 21 months is better than 0% for 6 months, all else equal. However, cards with longer promotional periods often charge higher transfer fees or have higher regular interest rates, so you need to see the full picture.

Read the card's terms carefully. Some cards charge a transfer fee only on transfers made within the first 60 days, then charge a higher fee or no transfer at all after that. Some promotional periods explore only to transfers, not to new purchases — meaning any new charges you make on the card accrue interest when ready at the regular rate. Confirm what the regular interest rate will be after the promotion ends, because that matters if you cannot pay off the full balance in time.

Calculate whether the transfer saves you money

Before you explore, do the math. You need three numbers: the balance you want to transfer, the transfer fee as a percentage, and the interest rate you currently pay.

Multiply your current balance by your current interest rate and divide by 12 to get your monthly interest charge. Multiply that by the number of months in the promotional period to estimate total interest you would pay if you made no payments. That is your potential savings.

Now multiply your balance by the transfer fee percentage (usually 3% to 5%) to get the upfront cost. If the potential savings exceed the upfront fee, the transfer makes sense financially. If they are close or the fee is higher, the transfer may not be worth it.

Example: You owe $8,000 at 21% interest. A balance transfer card offers 0% for 12 months with a 3% fee. Your monthly interest is currently $140. Over 12 months, you would pay $1,680 in interest. The transfer fee is $240. You save $1,440 net. That is worth doing. But if the promotional period is only 6 months, you save roughly $720 in interest, and the fee is still $240, leaving you only $480 ahead — a smaller benefit.

explore and complete the transfer

Once you have chosen a card, explore online or by phone. The issuer will ask for your income, employment status, and existing debts. They will pull your credit report and make a decision within minutes to a few days.

If you are approved, you will receive a credit limit. The issuer will then ask you to initiate the balance transfer. You provide the account number of the card you want to pay off, the amount to transfer, and the name and address of that card's issuer. Some issuers let you do this online when ready; others mail you a form or require a phone call.

The transfer typically takes 5 to 14 business days to post. During this time, you still owe your old card issuer, so keep making minimum payments on the old card until the transfer shows up on your new card's statement. Once the transfer posts, you owe the new issuer instead.

Your new card will arrive by mail separately from the transfer process. You do not need to set up it or use it for anything — the transfer happens regardless. If you do use it for new purchases, remember that those purchases usually accrue interest when ready, not during the promotional period.

Pay down the balance before the promotional period ends

The promotional period is your window to pay down debt without interest working against you. Every dollar you pay goes toward the principal, not interest. This is the entire point of doing a balance transfer.

Divide your transferred balance by the number of months in the promotional period to find out how much you need to pay each month to eliminate the debt before interest kicks in. If you transferred $8,000 with a 12-month 0% period, you need to pay roughly $667 per month. If you cannot commit to that amount, a balance transfer may not help you.

Set up automatic payments from your bank account to the new card on the same day each month, right after you get paid. This removes the temptation to skip a payment or pay less than planned. Missing a payment can also trigger a penalty interest rate, which overrides the promotional 0% rate on some cards.

If you have multiple debts, focus on paying down the transferred balance first during the promotional period. Once that is gone, redirect that payment amount to your other debts. Do not take on new credit card debt during this time, because you will be paying interest on it while you are trying to eliminate the transferred balance.

What happens if you cannot pay it off in time

If the promotional period ends and you still owe a balance, the remaining debt will start accruing interest at the card's regular rate. That rate is usually 18% to 25%, depending on your creditworthiness and the card. You will owe interest on whatever balance remains, not just on new charges.

Some cards allow you to do another balance transfer to a different card if you still have debt when the promotion ends. However, you will pay another transfer fee, and you need to be approved for another card. This can work if you have good credit and can find another card with a promotional offer, but it is not a long-term solution — eventually you run out of new cards to transfer to, and the fees add up.

If you find yourself unable to pay down the balance, contact the card issuer before the promotional period ends. Some issuers will work with you on a payment plan or extend the promotional period, though this is not may provide. It is better to ask than to let interest start accruing on a large balance.

Frequently Asked Questions

Will a balance transfer hurt my credit score?

Yes, temporarily. The hard inquiry lowers your score by a few points, and opening a new account temporarily lowers it further. However, the transfer also lowers your credit utilization on your old card (because you paid off that balance), which helps your score. Within a few months, your score usually recovers and may be higher than before if you keep the old card open and do not use it.

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

No. Most issuers do not allow you to transfer a balance between their own cards. You must transfer to a card from a different issuer. This is why you need to explore for a new card rather than straightforward moving the balance within your existing accounts.

What if I want to transfer balances from multiple cards?

You can transfer balances from more than one card to a single balance transfer card, as long as the total does not exceed your new credit limit. However, the transfer fee applies to each balance separately. If you transfer $3,000 from card A and $2,000 from card B with a 3% fee, you pay $150 on the first transfer and $60 on the second, for a total fee of $210.

Do I have to close my old card after the transfer?

You do not have to, and closing it can hurt your credit score by reducing your available credit and increasing your utilization ratio on remaining cards. It is usually better to leave the old card open and unused. However, if the card has an annual fee and you do not use it, closing it makes sense.

What if I miss a payment on the new card?

Missing a payment can trigger a penalty interest rate, which overrides the promotional 0% rate on many cards. You will start paying interest on the entire balance when ready, even if the promotional period has not ended. Set up automatic payments to avoid this.