What a 0% balance transfer card does and who it helps
A 0% balance transfer credit card lets you move debt from one card to another and pay no interest on that transferred amount for a set period — typically 6 to 21 months, depending on the card. During that window, every dollar you pay goes toward the principal instead of interest charges.
This works best if you have existing credit card debt and can pay it down within the interest-free period. If you carry a balance on a regular card charging 18% to 25% interest, moving that balance to a 0% card can save you hundreds or thousands in interest — but only if you stop using the old card and commit to paying down the transferred amount before the promotional period ends.
The catch: most cards charge a balance transfer fee upfront, usually 3% to 5% of the amount you transfer. You pay this fee when you move the balance, not later. So if you transfer $5,000 with a 5% fee, you owe $5,250 total. The interest savings still often outweigh the fee, but you need to do the math for your situation.
Key Takeaways
- A 0% balance transfer card charges no interest on transferred debt for 6 to 21 months, but most cards charge a one-time transfer fee of 3% to 5% when you move the balance.
- The math only works if you can pay down the transferred balance before the promotional period ends; after that, interest rates jump to the regular rate, often 18% or higher.
- You need decent credit (usually 670 or above) to be approved for a card with a strong 0% offer.
- The best card for you depends on how much you owe, how long you need to pay it off, and whether you need a 0% rate on new purchases as well as transfers.
How to compare 0% balance transfer cards
When you are looking at different cards, compare three things: the length of the 0% period, the transfer fee, and the regular interest rate that kicks in after the promotional period ends.
A card with a 21-month 0% period and a 3% fee is usually better than one with a 12-month period and a 5% fee, because you have more time to pay down the balance. But if you know you can pay off the debt in 8 months, a card with a shorter 0% window might be fine and could have a lower fee.
Also check whether the card charges interest on new purchases right away or gives you a 0% period on those too. If you are trying to stop using credit while you pay down debt, a card with 0% on transfers only is fine. If you think you might need to make new charges, look for a card that covers both transfers and purchases.
What credit score you need
Most cards with strong 0% balance transfer offers require a credit score of 670 or higher. Some cards are more flexible and may work with scores in the 650 to 669 range, but the 0% period will usually be shorter and the fee higher.
If your score is below 650, you may not be approved for a 0% card at all. In that case, look for a card designed for people rebuilding credit, or focus on paying down your current debt before explore. You can check your credit score for free through your bank, your credit card issuer, or services like AnnualCreditReport.com.
Steps to transfer a balance to a new card
Once you are approved for a 0% balance transfer card, the process is straightforward. The card issuer will give you a balance transfer check or a transfer code, or you can request a transfer through their website or app.
You will need the account number and balance from the card you want to pay off. Call the old card's customer service line or log into your account to find this information. Then either write a check to your old card issuer (if they sent you a balance transfer check) or enter the transfer request online with the old card's details.
The transfer usually takes 3 to 7 business days to post. During that time, keep making minimum payments on your old card so you do not fall behind. Once the transfer shows up on your new card, you can stop using the old card — but do not close the account, because closing it can hurt your credit score.
How to pay off the balance before interest kicks in
The promotional period is your window to pay down the debt interest-free. To make the most of it, divide the transferred balance by the number of months in the 0% period, then pay at least that amount every month.
For example, if you transfer $6,000 with a 12-month 0% period, aim to pay at least $500 per month. If you transfer $6,000 with an 18-month period, $333 per month gets you there. Build in a small buffer — aim to pay it off a month or two before the period ends, in case you miss a payment or the math is slightly off.
Set up automatic payments from your bank account if possible. This removes the risk of forgetting a payment, which would reset your 0% rate and trigger interest charges. Many card issuers let you set up autopay through their app or website in under a minute.
What happens when the 0% period ends
When the promotional period expires, any remaining balance will start accruing interest at the card's regular rate. This rate varies by card and by your creditworthiness, but typically ranges from 18% to 28%.
If you have not paid off the full balance by the end of the 0% period, you will owe interest on whatever is left. This is why the math matters upfront: if you cannot realistically pay off the balance in time, a 0% card may not help you.
If you are close to paying off the balance but not quite there, some people open a second 0% balance transfer card and move the remaining balance to it. This is possible but requires another hard credit inquiry and another transfer fee, so it only makes sense if the new card's terms are significantly better.
Alternatives if a 0% card is not an option
If your credit score is too low for a 0% balance transfer card, or if you cannot pay off the balance in the time frame offered, other routes exist.
A personal loan from a bank or credit union often has a lower interest rate than a credit card, even if it is not 0%. You borrow a fixed amount, make fixed monthly payments, and the loan ends on a set date. This removes the risk of interest rates jumping unexpectedly.
A debt management plan through a nonprofit credit counseling agency can negotiate lower interest rates with your creditors and set up a repayment schedule. This does not move the debt to a new card; instead, you pay the original creditors through the agency. It does affect your credit score, but less severely than bankruptcy.
If you own a home, a home equity line of credit (HELOC) typically has a much lower interest rate than a credit card, though it puts your home at risk if you cannot repay.
Frequently Asked Questions
Do I have to close my old credit card after I transfer the balance?
No, and you should not. Closing the account lowers your available credit and can hurt your credit score. Instead, keep the account open but stop using it. Once the balance is paid off, you can leave it open with a zero balance, which actually helps your credit score over time.
Can I transfer a balance from one card to another card from the same bank?
Most banks do not let you transfer a balance between their own cards. You will 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 miss a payment during the 0% period?
Missing a payment usually cancels the 0% rate when ready, and interest starts accruing on the full balance right away. Some cards have a grace period of 21 to 25 days, but do not count on it. Set up automatic payments to avoid this risk entirely.
Does explore for a 0% balance transfer card hurt my credit score?
Yes, the process triggers a hard inquiry, which lowers your score by a few points temporarily. The impact is usually small and fades within a few months. However, if you explore for multiple cards in a short time, the damage adds up, so space out applications if possible.
Can I use a balance transfer card to pay off medical debt or other non-credit-card debt?
No. Balance transfer cards only work with debt that is already on a credit card. Medical bills, personal loans, and other debts cannot be transferred. You would need a personal loan or other borrowing method to consolidate those debts.