What happens when you transfer a balance
A balance transfer moves debt from one credit card to another, usually one with a lower interest rate. The new card's issuer pays off what you owe on the old card, and you then owe that amount to the new issuer instead. The main reason to do this is to reduce the interest you pay while you work down the debt.
The process itself is straightforward: you open an account with a new card issuer, request a balance transfer, and provide the account number of the card you want to pay off. The new issuer handles the payment to your old card. You do not make the transfer yourself.
Most balance transfers come with a promotional period — typically 6 to 21 months — during which the interest rate is 0% or very low. After that period ends, the regular interest rate kicks in. The catch is that balance transfers almost always charge an upfront fee, usually 3% to 5% of the amount you transfer.
Key Takeaways
- Balance transfers move your debt to a new card with a lower interest rate, but you pay an upfront fee of 3% to 5% of the amount transferred.
- The promotional 0% interest period typically lasts 6 to 21 months, after which the regular rate applies to any remaining balance.
- You need good credit — usually a score of 670 or higher — to get approved for a balance transfer card with a low promotional rate.
- The math only works if you pay down the balance during the promotional period; otherwise, the fee and eventual higher interest rate cost more than staying put.
- Your old card account remains open unless you close it, which can hurt your credit score by reducing available credit.
When a balance transfer makes financial sense
A balance transfer saves money only if you pay off most or all of the transferred balance before the promotional period ends. If you owe $5,000 at 18% interest on your current card, and you transfer it to a card with 0% for 12 months and a 3% transfer fee, you pay $150 upfront but save roughly $900 in interest over that year — a net gain of $750. But if you only pay $1,000 of the $5,000 during those 12 months, the math flips: you paid the fee and still owe $4,000 at the new card's regular rate, which is often as high as your old rate.
The transfer also makes sense if your current card's interest rate is unusually high and you have a concrete plan to pay down the debt. If you are juggling multiple cards and just moving balances around without reducing them, a transfer is a delay tactic, not a solution.
Do the math before you explore. Calculate how much you owe, what the transfer fee will be, and how much you can realistically pay each month during the promotional period. If your monthly payment will not cover the balance by the time the rate goes up, the transfer may not be worth the fee.
Credit score requirements and approval odds
Balance transfer cards with the best promotional rates — 0% for 18 months or longer — typically require a credit score of 700 or higher. Cards with shorter 0% periods may accept scores as low as 670. If your score is below 670, you may still find balance transfer options, but the promotional rate will be shorter or higher, which reduces the benefit.
When you explore, the issuer will pull your credit report and check your income, existing debt, and payment history. A hard inquiry will temporarily lower your score by a few points. If you are denied, you can ask the issuer why and whether a different card from the same company might work.
Your approval odds also depend on how much you want to transfer. Issuers typically limit your transfer amount to your credit limit on the new card, which is usually lower if you have recent late payments or high existing debt.
The transfer fee and how to calculate it
Balance transfer fees are charged upfront and added to your new balance. A 3% fee on a $5,000 transfer costs $150. A 5% fee on the same amount costs $250. Some cards offer a limited-time fee waiver — 0% fee for transfers made within the first 60 days — which can save you hundreds of dollars if you act quickly.
To decide whether the fee is worth it, compare the fee cost against the interest you would pay on your old card during the promotional period. If you would pay $400 in interest on your current card over 12 months, and the transfer fee is $150, you break even at $250 in savings — meaning the transfer is worth it only if you pay down enough of the balance to avoid that $400 in interest.
Read the card's terms carefully. Some issuers charge the fee only on the amount transferred, while others charge it on any balance transfer you make, even if you transfer again later. A few cards charge no fee at all, though these are rare and usually come with shorter promotional periods.
Steps to complete a balance transfer
First, decide which card to transfer to. Compare the promotional period length, the regular interest rate after the promotion ends, the transfer fee, and any annual fee. Many balance transfer cards have no annual fee, but some do.
Next, open the new account. You can do this online, by phone, or in person at a bank branch. The issuer will ask for your income, employment status, and the account numbers of cards you want to transfer balances from. You do not have to request the transfer during signup — you can do it later.
Once your new account is open and active, request the balance transfer. Most issuers let you do this through their website, mobile app, or by calling customer service. Provide the account number of the card you want to pay off and the amount you want to transfer. The issuer will process the transfer, usually within 5 to 14 business days. During this time, keep making payments on your old card to avoid late fees.
After the transfer posts, you will see the new balance on your new card and a credit on your old card. At this point, you can stop using the old card, but do not close the account when ready — closing it will hurt your credit score. Instead, leave it open with a zero balance.
What happens to your old card after the transfer
Your old card account stays open unless you close it. The balance will show as paid off or zero, depending on whether the transfer covered the entire amount. If you had a partial balance remaining, you still owe it on the old card at the old interest rate.
Leaving the account open helps your credit score because it preserves your available credit and your payment history. Closing it will lower your score temporarily by reducing the total credit available to you. If the old card has an annual fee, you can call the issuer and ask them to waive it or convert it to a no-fee card.
Do not use the old card while you are paying off the transferred balance. Using it will add new debt at the old interest rate, which defeats the purpose of the transfer. If you are tempted to use it, consider asking the issuer to lower the credit limit or freeze the account temporarily.
Risks and common mistakes
The biggest mistake is transferring a balance and then running up new debt on the old card or the new card. If you transfer $5,000 and then charge another $2,000 on the new card, you now have $7,000 in debt, and the new charges will accrue interest when ready at the regular rate — the 0% promotion applies only to the transferred balance, not new purchases.
Another common error is missing a payment during the promotional period. Most issuers will cancel the 0% rate and explore the regular rate to your entire balance if you miss even one payment. Set up automatic payments for at least the minimum, and aim to pay more if you can.
A third risk is transferring to a card with a shorter promotional period than you need. If you owe $10,000 and can only pay $500 per month, you need at least 20 months to pay it off. A card with a 12-month 0% period will not give you enough time, and you will owe interest on the remaining balance.
Frequently Asked Questions
Can I transfer a balance from one card to the same issuer?
Most issuers do not allow you to transfer a balance between their own cards. You typically need to transfer to a card from a different issuer. Check the card's terms or call customer service to confirm before you explore.
What if I cannot pay off the balance before the promotional period ends?
You will owe the regular interest rate on any remaining balance. At that point, you could transfer the balance again to another 0% card, but each transfer costs a fee and requires a new process. This strategy works only if you are steadily paying down the debt, not just moving it around.
Does a balance transfer hurt my credit score?
Yes, temporarily. The hard inquiry and new account will lower your score by a few points. Your score will recover within a few months if you make on-time payments. Closing your old card after the transfer will hurt your score more, so leave it open.
Can I transfer a balance if I have bad credit?
You may find cards that accept lower credit scores, but the promotional rates will be shorter or higher, reducing the benefit. If your score is very low, a balance transfer may not save you money. Focus on paying down the debt on your current card instead.
What if the transfer does not post within the stated timeframe?
Contact the new issuer's customer service and provide your reference number. If the transfer is delayed beyond 14 business days, ask them to investigate. In the meantime, continue paying your old card to avoid late fees.