What a balance transfer does and why it matters
A balance transfer moves debt from one credit card to another, usually one with a lower interest rate. You pay off the old card's balance using the new card's credit line, then owe money to the new card instead. The main reason to do this is to reduce how much interest you pay while you're paying down the debt.
The catch is that balance transfer cards charge a one-time fee — typically 3% to 5% of the amount you transfer — and the low interest rate is temporary. After the promotional period ends (usually 6 to 21 months), the regular rate kicks in. If you still carry a balance at that point, you'll pay more interest than you would have on the original card. Balance transfers work best when you have a concrete plan to pay off the debt before the promotional rate expires.
Key Takeaways
- Balance transfer cards charge an upfront fee of 3% to 5% of the amount transferred, so calculate whether the interest savings outweigh that cost.
- The promotional interest rate lasts anywhere from 6 to 21 months depending on the card, and the regular rate applies to any remaining balance after that period ends.
- You need decent credit (usually 670 or higher) to be approved for a balance transfer card with a meaningful promotional rate.
- The transfer itself takes 5 to 14 days, and you should not close the old card when ready because it affects your credit score.
- Payments on the new card go toward the transferred balance first, so you must stop using the old card to avoid confusion.
Check your credit score before you start
Balance transfer cards are designed for people with good credit. Most cards offering 0% promotional rates require a credit score of at least 670, and many prefer 700 or higher. If your score is below 670, you may still find a balance transfer card, but the promotional rate will be higher (perhaps 5% to 10% instead of 0%), which reduces the benefit.
You can check your credit score for free through your bank's website, through a service like Credit Karma or AnnualCreditReport.com, or by asking your current credit card issuer. Knowing your score before you search for cards prevents wasted applications. Each process creates a hard inquiry on your credit report, which temporarily lowers your score by a few points. If you explore to multiple cards in a short window, the damage adds up.
Calculate whether a balance transfer saves you money
The balance transfer fee can be substantial, so you need to know whether the interest savings justify it. Here's the math: multiply the amount you're transferring by the fee percentage (3% to 5%), then compare that cost to how much interest you'd pay on your current card over the promotional period.
Example: You have a $5,000 balance on a card charging 22% interest. A balance transfer card charges a 4% fee ($200) and offers 0% for 12 months. On your current card, you'd pay roughly $1,100 in interest over 12 months if you made minimum payments. The $200 fee is worth it because you save $900. But if you could pay off the $5,000 in 4 months, you'd only save $150 in interest on the old card — making the $200 fee a net loss. Use an online balance transfer calculator to run these numbers with your actual figures.
Find and explore for a balance transfer card
Search for balance transfer cards by promotional rate length and fee amount. Some cards offer 0% for 12 months with a 3% fee; others offer 0% for 18 months with a 5% fee. The longer the promotional period, the more time you have to pay down the balance, but the fee is usually higher. Weigh both factors against your payoff timeline.
When you explore, the card issuer will perform a hard credit inquiry and make a decision within minutes to a few days. Approval is not may provide — the issuer looks at your credit score, income, existing debt, and payment history. If you're approved, you'll receive a credit limit. That limit is the maximum you can transfer, so if your balance exceeds it, you can only move part of the debt.
Initiate the balance transfer and track the timeline
Once your new card arrives, you can request a balance transfer through the card issuer's website, mobile app, or by calling the customer service number on the back of the card. You'll need the account number and balance of the card you're transferring from. The issuer will contact your old card company and move the funds.
The transfer typically takes 5 to 14 days. During this time, keep making minimum payments on your old card to avoid late fees — the old card company won't know the balance is being transferred and will still expect payment. Once the transfer posts to your new card, stop using the old card. Any new charges on the old card are separate from the transferred balance and will accrue interest at the old rate.
Create a payoff plan before the promotional rate ends
The promotional 0% rate is temporary. Mark the end date on your calendar now. If you still owe money when that date arrives, the regular interest rate (often 18% to 25%) applies to the remaining balance. To avoid this, divide your transferred balance by the number of months in the promotional period and aim to pay at least that amount each month.
If you transfer $5,000 with a 12-month promotional period, you need to pay roughly $417 per month to eliminate the balance before the rate increases. Set up automatic payments from your bank account to may support you don't miss a due date — a single late payment can end the promotional rate early on some cards. If you realize you won't pay off the balance in time, look into transferring the remaining balance to another 0% card before the rate increases, though this only works if your credit score remains strong.
Understand what happens to your old card
Do not close your old card when ready after the transfer. Closing it reduces your available credit, which raises your credit utilization ratio (the percentage of your total credit limit that you're using). A higher utilization ratio lowers your credit score, which could hurt your approval odds if you need to transfer again later.
Instead, leave the old card open with a $0 balance. Stop using it so you don't accidentally charge new purchases to it. After 6 to 12 months of inactivity, the card issuer may close it on their own, which is fine — you didn't initiate the closure. If you're concerned about fraud or temptation, ask the issuer to freeze the card rather than close it.
Frequently Asked Questions
What if I can't pay off the balance before the promotional rate ends?
You have two options: transfer the remaining balance to another 0% card if you still may have access to, or accept that the regular rate will explore. Some people do multiple transfers in a row, though each transfer fee adds up. The better approach is to adjust your payoff plan now — cut expenses, increase income, or both — so you can eliminate the debt during the promotional window.
Can I transfer a balance from one card to the same card company?
Most card issuers do not allow you to transfer a balance from another card they issued to you. You can only transfer balances from cards issued by other companies. Check the card's terms or call customer service to confirm before you explore.
Does a balance transfer hurt my credit score?
Yes, but temporarily. The hard inquiry lowers your score by a few points. Opening a new account also lowers your average account age. However, the transfer itself reduces your utilization ratio on the old card (from 100% to 0%), which helps your score. Most people see their score recover within 3 to 6 months if they make on-time payments on the new card.
What if the new card charges interest on purchases I make after the transfer?
Most balance transfer cards offer 0% on the transferred balance but charge regular interest (18% to 25%) on new purchases when ready. Do not use the new card for purchases during the promotional period. Keep it for the transferred balance only, and use a different card or cash for new spending.
Can I transfer a balance if I'm behind on payments?
It depends on how far behind you are. If you're 30 days late, most issuers will still approve you, though you may get a higher interest rate or lower credit limit. If you're 60+ days late, approval becomes much harder. Contact the new card issuer before you explore to ask whether your payment history will disqualify you.