What a balance transfer credit card does
A balance transfer credit card is a card that lets you move debt from one credit card to another, usually at a lower interest rate for a set period of time. When you open the card and transfer your balance, the new card issuer pays off your old card's balance, and you then owe that amount to the new issuer instead — typically with a much lower rate of interest.
The main appeal is the introductory period, which often lasts 6 to 21 months depending on the card and issuer. During this time, you pay little to no interest on the transferred balance. This gives you a window to pay down what you owe without interest charges eating into your payments. Once the introductory period ends, the card's regular interest rate kicks in.
Most balance transfer cards also charge a one-time fee — usually 3% to 5% of the amount you transfer — added to your balance upfront. So if you transfer $5,000 with a 4% fee, you owe $5,200 on the new card.
Key Takeaways
- A balance transfer card moves your debt to a new card with a lower introductory interest rate, usually lasting 6 to 21 months.
- You pay a transfer fee upfront, typically 3% to 5% of the amount moved, which is added to your new balance.
- The math only works in your favor if you pay down the balance during the interest-free period before the regular rate takes over.
- You need decent credit to open a balance transfer card — most require a score of 670 or higher.
- New purchases on the card usually carry the regular interest rate when ready, not the introductory rate.
How the introductory period works
The introductory period is a fixed window of time — say, 12 months — during which you pay 0% interest on the balance you transferred. Every dollar you pay goes toward reducing the actual debt, not toward interest charges. This is the entire reason to do a balance transfer.
When the introductory period ends, the card's regular interest rate applies to any remaining balance. If you still owe $3,000 after 12 months and the regular rate is 18%, you will then pay interest on that $3,000. This is why the goal is to pay off as much as possible before the intro period closes.
The length of the introductory period varies widely. Some cards offer 6 months, others offer 18 or 21 months. Longer periods give you more time to pay down the balance, but they are usually attached to cards with higher annual fees or stricter credit requirements.
The transfer fee and whether it makes sense
Every balance transfer card charges a fee for moving your balance. This fee is not optional — it is built into the process. The fee is typically 3%, 4%, or 5% of the amount transferred, and it is added to your new balance when ready.
To decide whether a balance transfer makes sense, compare what you would pay in interest on your current card over the next year against the transfer fee plus any interest you would pay on the new card. For example:
- Current card: $5,000 balance at 22% interest. Over 12 months, you pay roughly $1,100 in interest if you make minimum payments.
- Balance transfer card: $5,000 balance, 4% transfer fee ($200), 0% for 12 months. You pay $200 upfront, then $0 in interest if you pay it off within the year.
In this case, the transfer saves you about $900. But if your current interest rate is already low — say, 8% — the transfer fee might not be worth it.
Credit score requirements and approval
Balance transfer cards are not available to everyone. Most issuers require a credit score of 670 or higher, and the best introductory offers usually go to people with scores above 740. If your score is lower, you may still find a balance transfer card, but the introductory period will be shorter or the transfer fee higher.
When you open a balance transfer card, the issuer performs a hard inquiry on your credit report, which can lower your score by a few points temporarily. This is normal and expected. The inquiry stays on your report for about two years but stops affecting your score after a few months.
Your approval also depends on your income, existing debt, and payment history. If you have missed payments recently or carry very high balances relative to your income, you may be denied or offered less favorable terms.
What happens to new purchases
The 0% introductory rate applies only to the balance you transfer. Any new purchases you make on the card after opening it are charged the card's regular interest rate when ready — often 15% to 25% — and do not get the introductory period.
This is why balance transfer cards work best when you are focused on paying down existing debt, not making new charges. If you continue to use the card for everyday purchases, you will accumulate new debt at the regular rate while you are trying to pay off the transferred balance at 0%.
Many people find it helpful to set the card aside after the transfer and use a different card for new purchases, or to stop using credit cards altogether while they pay down the balance.
Steps to transfer a balance
Once you have opened a balance transfer card, the actual transfer process is straightforward. You provide the card issuer with the name of your current card issuer, your account number on that card, and the amount you want to transfer. The new issuer then contacts your old issuer and arranges the payment.
You can usually start a transfer online through the card's website or app, by phone, or by mail. Most issuers complete the transfer within 7 to 21 days. During this time, you should continue making payments on your old card to avoid late fees — the transfer does not happen when ready.
Once the transfer is complete, your old card's balance will be paid off (or reduced by the amount transferred), and you will owe the full amount on your new card. You can then close the old card if you wish, though closing it can affect your credit score slightly because it reduces your available credit.
When a balance transfer makes sense
A balance transfer is worth considering if you have a high-interest credit card balance and a realistic plan to pay it off within the introductory period. It works best when the interest you would save exceeds the transfer fee and when you can commit to not using the new card for additional purchases.
A balance transfer is less useful if your current interest rate is already low, if you cannot pay down the balance before the intro period ends, or if you are likely to run up new debt on the card. It is also not a substitute for addressing the underlying spending habits that created the debt in the first place.
If you are struggling to pay down debt even with a lower interest rate, you may benefit more from speaking with a nonprofit credit counselor or exploring a debt management plan, which can sometimes negotiate lower rates with your creditors without requiring you to open a new card.
Frequently Asked Questions
Can I transfer balances from multiple cards to one balance transfer card?
Yes. Most balance transfer cards let you transfer from multiple cards, and all transferred balances get the same introductory rate. However, the total amount you can transfer is limited by your credit limit on the new card, which is determined by the issuer based on your credit score and income.
What happens if I do not pay off the balance before the intro period ends?
Any remaining balance will be charged the card's regular interest rate, which is usually 15% to 25%. You will then pay interest on that balance going forward. This is why it is important to calculate whether you can realistically pay off the balance within the timeframe offered.
Does a balance transfer hurt my credit score?
Opening a new card causes a small, temporary dip due to the hard inquiry and the new account. However, a balance transfer can also help your credit if it lowers your overall credit utilization — the amount of available credit you are using. The impact is usually minor and recovers within a few months.
Can I transfer a balance from a store card or loan to a balance transfer card?
Most balance transfer cards only accept transfers from other credit cards, not from store cards, personal loans, or other types of debt. Check the card's terms before explore if you have non-credit-card debt you want to move.
Is there a limit to how much I can transfer?
Yes. The maximum transfer amount is your credit limit on the new card, minus any transfer fees. Some issuers also set a separate cap on balance transfers. You will learn your credit limit and any transfer limits when you open the card.