DebtCheckUSADebt Check

Tool guide

What Is a Balance Transfer? How It Works, Fees and Rules

What is a balance transfer? You move card debt to a card with a low intro rate, usually for a fee. How it works, the six-month rule and when it backfires.

Updated October 26, 20269 min readReviewed by DebtCheckUSA Editorial Team, editorial review: primary sources checked and independently fact-checked

Two hands lifting a small stack of light oak wooden blocks from one cream ceramic dish into an empty sage-green dish beside it, with a small sand hourglass on the desk.
On this page
Not sure where to start? Take the Debt Check.About 2 minutes. Rough numbers are fine.

What is a balance transfer? It's moving what you owe on one credit card to a different card, usually one that charges a low or 0% introductory rate for a set time. You don't owe less: you usually pay a transfer fee, and whatever is left when the intro rate ends is charged the card's regular rate. A transfer saves money only if the fee and the later interest add up to less than you'd pay by staying put.

What is a balance transfer, and how does it work?

A balance transfer moves debt from one card to another. The CFPB defines the fee that comes with it as a fee charged to transfer an outstanding balance to a different credit card. Many credit card companies offer zero-percent or low-interest balance transfers.

It's one form of debt consolidation. Our guide to how debt consolidation works covers the other routes, such as loans and nonprofit plans.

Here is the process, step by step:

  1. Read the offer's disclosure table. Under 12 CFR 1026.60, a card application or solicitation has to disclose the rate for balance transfers and any fee imposed to transfer an outstanding balance. If the offer has an introductory rate, the table has to show that rate, how long it lasts and the rate that would otherwise apply, labeled "introductory" or "intro". Directly beneath the table, the issuer has to briefly say when, if ever, the intro rate can be taken away and what type of rate applies then.
  2. Apply, or use an offer on a card you already have. The CFPB warns that if problems with debt have affected your credit score, you probably won't be able to get low interest rates on the balance transfer.
  3. Ask the new card company to move the balance. In our calculator, the fee is added to the balance you start with on the new card.
  4. Check the old account until the transferred amount shows up there.
  5. Pay the new card down on a schedule. Divide what you owe by the number of intro months to see the payment that clears it before the rate goes up. The calculator below does this for you.

Balance transfer fees

Any answer to what is a balance transfer has to include the fee. You'll probably pay a "balance transfer fee." The fee is usually a certain percentage of the amount you transfer or a fixed amount, whichever is more. A 0% rate doesn't rule out a fee: a credit card company is permitted to charge you a balance transfer fee on a zero percent rate offer.

Use the fee in the offer you're looking at. On a $6,000 transfer, a 3% fee is $180 and a 5% fee is $300. Our calculator adds it to the balance you start with, before any interest.

The rules that protect a balance transfer rate

A federal rule, Regulation Z, limits how a card company can change a promo rate. The CFPB sums up the main points.

The six-month minimum

The introductory rate has to stay in effect for at least six months, unless you are more than 60 days late on a payment. The card issuer is required to tell you how long you will have the introductory rate. If the intro rate is tied to an index, such as the prime rate, it can still change during those six months when the index moves.

The rate after the promo is set in advance

Under 12 CFR 1026.55(b)(1), before the promo starts the issuer has to disclose in writing how long it lasts and the rate that will apply after it ends. Once it ends, the issuer can't charge more than that disclosed rate on balances from the promo period. When the promo ends, the interest rate on your new credit card may rise, increasing your payment amount. The NCUA notes that this option generally has high interest rates after the introductory period.

The 60-days-late rule

If you're more than 60 days late on a payment, the credit card company can increase your interest rate on all balances, including the transferred balance. There's a way back. Under 12 CFR 1026.55(b)(4), the issuer's notice of the increase has to say why, and if the issuer then gets six minimum payments in a row on or before their due dates, it has to lower the increased rate back to the earlier rate for transactions made before or within 14 days after that notice.

How your payments are applied

If you also use the transfer card, you can end up with more than one rate on it: the intro rate on the transferred balance, and the regular rate on anything else. A rule decides where your money goes.

Under 12 CFR 1026.53(a), when you pay more than the required minimum, the card issuer must allocate the excess amount first to the balance with the highest annual percentage rate, then to the others in order of rate. The rule is about the part of your payment above the minimum.

So if you have a 0% transferred balance and new purchases at a higher rate, money you pay above the minimum goes to the purchases first. That helps you, because the costly balance shrinks first. But it also means the transferred balance only starts to fall faster once the purchases are paid off.

Watch for one different kind of offer. Some promos are deferred interest: you aren't obligated to pay the interest that builds up on a balance if you pay that balance in full before a set date. For those, 12 CFR 1026.53(b) says that in the two billing cycles right before the period ends, the excess goes to the deferred-interest balance first. Read the offer to see which kind you have.

New purchases on a balance transfer card

This catches people out. For most credit cards, if you carry a balance, any purchases you make will accrue interest from the date of the transaction, even while the transferred balance sits at 0%.

If you usually pay in full to keep your grace period, a transfer changes that too. You'll owe interest on purchases unless you pay the entire balance off in full by the due date (including the transferred balance). The CFPB's consolidation page says the same thing: if you use the same credit card to make new purchases, you won't get a grace period for those purchases and you will have to pay interest until you pay the entire balance off in full, including the transferred balance.

That's why it helps to keep the transfer card for the transfer and nothing else. Our guide to how credit card interest works explains grace periods in more detail.

How a balance transfer affects your credit

A transfer can help or hurt, depending on what you do around it.

A worked example: when a balance transfer pays off

These numbers come from our balance transfer calculator. The card terms are made up for the example; they aren't quotes or typical offers.

You owe $6,000 on a card at 24% APR and pay $250 a month. Staying put, it's paid off in month 34, with $2,256 in interest: $8,256 in total.

Now move it to a card with a 3% transfer fee and 0% for 18 months, then 24%. The fee is $180, so you start at $6,180. At the same $250 a month, $1,680 is still left when the promo ends. It's paid off in month 26, and the total is $6,323: the $6,000, the $180 fee and $143 of interest. That's $1,933 less than staying. To clear it all before the promo ends, you'd need about $344 a month.

When a balance transfer doesn't pay off

Change the numbers and the answer flips. Say your current card is at 20%, and the offer has a 5% fee, 0% for six months, then 29%. Staying at $250 a month, it's paid off in month 31 for $7,726. With the transfer, the fee is $300, $4,800 is still left when the six months end, and payoff takes until month 33 for $8,029. The transfer costs $303 more.

A transfer tends not to pay off when:

Other ways to lower what card debt costs

Before you apply, the CFPB suggests steps that need no new card. Some creditors might be willing to accept lower minimum monthly payments, waive certain fees, reduce your interest rate, or change your monthly due date. A lower rate on a card you already have does part of what a transfer would. A payoff plan of your own costs nothing to set up; our guide to debt avalanche vs snowball compares the two usual orders.

If a transfer won't work, a consolidation loan is another way to borrow your way to one payment. Our guide to balance transfer vs personal loan compares the two side by side.

A debt management plan through a credit counseling organization is another route. The FTC says a plan can take 48 months or more to complete, and you might have to agree not to apply for or use any more credit until it's finished. Our debt management plan guide explains how it works.

Bottom line

So what is a balance transfer, in one line? It moves card debt to a card with a low intro rate, usually for a fee. It can save money when you can pay down most of the balance before the promo ends, pay every bill on time, and leave the card alone for new purchases. It can cost more when the promo is short, the later rate is high, or the spending that built the debt hasn't stopped. Run your own numbers first, and compare them with a payoff plan, a loan or a nonprofit counselor. The Debt Check does that with your own debts.

Common questions

What is a balance transfer in simple terms?

It means moving a balance you owe on one credit card to a different credit card, usually one with a low or 0% introductory rate. You still owe the same debt, plus any transfer fee; what changes is the rate you pay on it for a while.

Is there a fee on a 0% balance transfer?

There can be. The CFPB says a credit card company is permitted to charge a balance transfer fee on a zero percent rate offer, and the fee is usually a percentage of the amount you transfer or a fixed amount, whichever is more. The card's application or offer has to list any balance transfer fee.

How long does a 0% balance transfer rate last?

The CFPB says an introductory rate has to stay in effect for at least six months, unless you are more than 60 days late on a payment. The card issuer has to tell you how long you will have the introductory rate and what rate applies after it.

Do new purchases on a balance transfer card cost interest?

For most credit cards, yes, if you carry a balance. The CFPB says purchases then accrue interest from the date of the transaction, even while the transferred balance is at 0%.

Does a balance transfer hurt your credit?

It can. The NCUA warns a balance transfer could hurt your credit score if card balances are above 30% of credit limits, and the CFPB says applying for a lot of credit in a short time may look to lenders like you are dealing with financial setbacks. For most credit scores, repayment history is the number one factor.

Sources

  1. 1CFPB: What is a balance transfer fee? Can a balance transfer fee be charged on a zero percent interest rate offer?
  2. 2CFPB: How long can I keep a low rate on a balance transfer or other introductory rate?
  3. 3CFPB: Do I pay interest on new purchases after I get a zero or low rate balance transfer?
  4. 4CFPB: What do I need to know about consolidating my credit card debt?
  5. 5CFPB: How do I get and keep a good credit score?
  6. 6eCFR: 12 CFR 1026.53, Allocation of payments (Regulation Z)
  7. 7eCFR: 12 CFR 1026.55, Limitations on increasing annual percentage rates, fees, and charges (Regulation Z)
  8. 8eCFR: 12 CFR 1026.60, Credit and charge card applications and solicitations (Regulation Z)
  9. 9MyCreditUnion.gov (NCUA): Debt Consolidation Options
  10. 10FTC: How To Get Out of Debt

By DebtCheckUSA Editorial Team. First published October 26, 2026. Advertiser disclosure

Keep reading