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 your old balance, and you then owe that amount to the new card instead. The main reason to do this is to reduce how much interest you pay while you work down the debt.

Most balance transfer offers include a promotional period — often 6 to 21 months — during which the new card charges zero percent interest on the transferred amount. After that period ends, the regular interest rate kicks in. The catch is that balance transfers usually cost 3 to 5 percent of the amount you move, charged upfront and added to your new balance.

Balance transfers work best when you have a concrete plan to pay down the debt during the promotional period. If you transfer $5,000 at 3 percent cost, you owe $5,150 on the new card. If you pay nothing for 12 months and then face a 20 percent interest rate, you've gained almost nothing.

Key Takeaways

  • Balance transfer cards charge 3 to 5 percent upfront to move your debt, but offer zero percent interest for 6 to 21 months depending on the card.
  • You need good credit (usually 670 or higher) to get approved for a balance transfer card with a promotional rate.
  • The transfer itself takes 5 to 14 days; during that time, keep paying your old card to avoid late fees.
  • Calculate whether the promotional period is long enough for you to pay down the balance before regular interest rates return.
  • Balance transfers do not reduce the total amount you owe — they only pause interest, so a repayment plan is essential.

Check your credit score before you explore

Balance transfer cards with zero percent promotional rates are reserved for borrowers with good credit. Most issuers require a score of 670 or higher; many prefer 700 or above. If your score is below 670, you may still be approved, but you will not receive the promotional rate — you will get a standard rate instead, which defeats the purpose of transferring.

You can check your own score free through AnnualCreditReport.com, which is the official site for the credit reports you are legally may have access to to once per year. You can also check your score free through your bank or credit card issuer if they offer it, or through services like Credit Karma or NerdWallet, which use educational scores that are close to but not identical to the scores lenders see.

If your score is below 670, you have two options: wait and work on raising it (paying down existing balances and making on-time payments for several months), or look for a balance transfer card with a lower credit requirement, though these offer shorter promotional periods or higher transfer fees.

Find a balance transfer card that fits your timeline

Balance transfer cards vary in three ways: the length of the promotional period, the transfer fee, and the regular interest rate after the promotion ends. There is no single "best" card — the right one depends on how much you owe and how quickly you can pay it down.

If you owe $3,000 and can pay $300 per month, you will be debt-free in 10 months. You need a promotional period of at least 10 months, ideally 12 to give yourself a buffer. A card offering 12 months at zero percent with a 3 percent fee costs you $90 upfront and saves you hundreds in interest.

If you owe $8,000 and can only pay $200 per month, you need 40 months to finish. A 12-month promotional period will not help you much — you will still owe $5,600 when the regular rate kicks in. In this case, look for a card with 18 to 21 months of zero percent interest, or reconsider whether a balance transfer is the right move. You might instead focus on paying down the balance on your current card before transferring.

Compare cards using sites like NerdWallet, The Points Guy, or your bank's website. Look at the promotional period length, the transfer fee percentage, and the regular APR that applies after the promotion. Write down the math for your specific situation — do not rely on marketing language.

explore and get approved

Once you have chosen a card, explore directly through the issuer's website. The process asks for income, employment, housing status, and other financial details. Approval usually takes a few minutes to a few hours online, though some issuers mail a decision.

When you are approved, the issuer will assign you a credit limit. This is the maximum you can transfer. If your limit is $4,000 but you owe $6,000, you can only transfer $4,000. Some issuers let you request a higher limit before you transfer; others do not.

Do not close your old card yet. You will need it to complete the transfer, and closing it can hurt your credit score by reducing your available credit and shortening your credit history.

Initiate the balance transfer

Once your new card arrives and is activated, log into your account online or call the issuer's customer service number. Look for an option called "Transfer a Balance" or "Balance Transfer." You will need to provide:

  • The name of your old card issuer (Visa, Mastercard, American Express, Discover, or a bank name)
  • Your old card account number
  • The amount you want to transfer (up to your new card's credit limit)

The new issuer will then contact your old card issuer and arrange the payment. This process takes 5 to 14 days. During this time, your old card is still active and you still owe the balance there. Keep making at least the minimum payment on your old card to avoid late fees and credit damage.

Once the transfer completes, your old card balance will drop to zero (or close to it if you made new purchases), and your new card balance will show the transferred amount plus the transfer fee.

Pay down the balance during the promotional period

The promotional period is your window to pay interest-free. Every dollar you pay goes toward the principal, not interest. This is where the real savings happen.

Divide your new card balance by the number of months in the promotional period. If you owe $5,150 and have 12 months, you need to pay about $430 per month to finish before the rate kicks in. Set up automatic payments from your bank account to may support you do not miss a month.

Do not make new purchases on the new card during this period. Most cards explore new purchases to a separate balance with a regular interest rate, and they require you to pay off the promotional balance first before the payment goes toward new purchases. This complicates your payoff plan.

If you cannot pay off the full balance before the promotional period ends, you have a few options: request a second balance transfer to another zero-percent card (if your credit allows), negotiate a lower interest rate with the issuer, or accept that you will pay interest on the remaining balance at the regular rate.

Understand what happens after the promotion ends

When the promotional period expires, the regular APR applies to any remaining balance. This rate varies by card and by your creditworthiness, but typically ranges from 15 to 25 percent. If you owe $2,000 when the promotion ends, you will start paying interest on that $2,000 at the regular rate.

Some people use balance transfer chains — moving the remaining balance to another zero-percent card before the first promotion ends. This works if you have good credit and can find another card that will approve you. However, each transfer costs 3 to 5 percent, so the fees add up. After two or three transfers, the fees may exceed the interest you would have paid on the original card.

The best outcome is to pay off the entire transferred balance before the promotional period ends. If that is not possible, reassess your budget and repayment plan before you transfer.

Frequently Asked Questions

Does a balance transfer hurt my credit score?

A balance transfer causes a small, temporary dip in your credit score because the issuer runs a hard inquiry and opens a new account. The dip is usually 5 to 10 points and recovers within a few months. However, if the transfer lowers your overall credit utilization (the percentage of your available credit you are using), your score may recover faster or even improve over time.

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

Most issuers do not allow you to transfer a balance from another card they issued to a new card they issued. You can only transfer from a competitor's card. Check the card's terms before you explore if this matters to you.

What if I cannot pay off the balance before the promotion ends?

You will owe the regular interest rate on the remaining balance. If the amount is large, consider requesting a lower rate from the issuer, or look into a debt consolidation loan, which may offer a lower fixed rate than a credit card. Do not ignore the balance — interest will compound and the debt will grow.

Can I use a balance transfer to move debt from multiple cards?

Yes. You can transfer balances from several different cards to one new balance transfer card, as long as the total does not exceed your credit limit. Each transfer is treated as a single transaction, so you pay one transfer fee total, not one per card.

Should I close my old card after the balance is transferred?

Not when ready. Closing a card reduces your available credit and can lower your credit score. Wait at least six months after the transfer is complete, then close it if you want. If you keep it open, do not use it — an active old card with a zero balance is better for your credit than a closed one.