How balance transfers work, step by step.

01 / The Premise

The basic mechanic

When you carry a $5,000 balance on a credit card at around 22% APR, you pay roughly $92 per month in pure interest. That is over $1,100 a year going to the bank, not toward reducing your debt.

A balance transfer card at 0% intro APR removes that interest charge for the introductory period (typically 15 to 21 months). Every dollar you pay goes directly toward reducing the balance. If you pay $278 a month on a $5,000 balance over 18 months, you clear the entire debt before any interest starts.

02 / Process

The transfer in five steps

1. 01

   Apply for a balance transfer card

   Pick a card with a 0% intro APR on balance transfers and apply online. The application triggers a hard credit inquiry (typically a small temporary dent of around 5 to 10 FICO points). Most decisions arrive in minutes, though some issuers take a week or more. You must be approved before you can request a transfer.

2. 02

   Request the balance transfer

   After approval, log in to your new account or call the issuer to initiate the transfer. Provide your old card's account number and the amount you want to move. You can typically transfer most (but not all) of your new credit limit. Most issuers require you to request the transfer within 60 to 120 days of account opening to qualify for the 0% rate.

3. 03

   The new card pays your old card

   Your new card issuer sends a payment directly to your old card issuer. This step takes anywhere from about a week to roughly three weeks depending on the bank and method. Keep making minimum payments on the old card until you confirm the transfer completed and the old card balance shows zero for the transferred amount.

4. 04

   Transfer fee gets added to your new balance

   The transfer fee, typically 3% to 5% of the transferred amount, is added to your new card balance on the day the transfer processes. If you move $8,000 with a 5% fee, your opening balance is $8,400 at 0% APR. The fee is a one-time charge, not recurring.

5. 05

   Pay down the balance during the 0% window

   Divide your total new balance (including the fee) by the number of intro months to find the monthly payment that clears the debt before the rate resets. Set up autopay for at least the minimum payment to protect the 0% offer. Then pay the calculated amount on top each month.

03 / Timing

Processing windows by issuer

Most guides say "5 to 14 days" and leave it there. The honest version is that processing times cluster into two camps: faster (around 1 to 2 weeks) for most issuers, and slower (up to 3 weeks) for a couple of larger banks. Always confirm the current window with the issuer before you stop paying the old card.

The 0% intro period starts from your account opening date, not from the transfer date. Apply and request the transfer quickly to maximise the 0% window. Verify the current processing window directly with the issuer.

04 / Aftermath

What happens to the old card?

Your old card does not close when you transfer the balance off it. It becomes a card with a $0 balance and its full credit limit available. This is generally positive for your credit score because it lowers your overall utilization ratio.

05 / Restriction

Same-issuer restriction

You cannot transfer a balance between cards at the same bank. If your high-interest card is from Chase, the destination card must be from a different issuer. This matters because many cards share an issuing bank under different co-brand names.

06 / In-Flight

During the processing window

1. 01

   Keep paying the old card minimum.

   Do not assume the transfer went through until both issuers confirm. A missed payment during processing still counts against you.

2. 02

   Watch both accounts for a few days.

   Monitor the old card for the balance reduction and the new card for the balance addition. Discrepancies are easier to fix early.

3. 03

   Avoid new purchases on either card.

   New purchases on the BT card may not get the 0% rate. New purchases on the old card simply add to your debt.

4. 04

   Set up autopay on the new card immediately.

   Even before the transfer completes, autopay the minimum. This protects your promotional rate from day one.