How Do Balance Transfers Work?
A balance transfer moves debt from one credit card to another card that offers a lower introductory APR — often 0% for 12 to 21 months. The goal is to redirect what would have been interest into principal reduction.
Fees are the catch
Almost every balance transfer offer includes a transfer fee, usually 3% to 5% of the amount transferred, added to your new balance on day one. On a $5,000 transfer at 3%, that is $150 up front.
The intro period is the whole game
If you pay the transferred balance in full during the intro period, you may pay only the transfer fee in “interest.” If not, the post-introductory APR applies to whatever is left — usually a similar rate to your current card.
What the math needs to show
A transfer is worthwhile when the interest saved (versus staying with the current card) exceeds the transfer fee. Our balance transfer calculator shows both sides and explicitly reports when the transfer would cost more.
Common pitfalls
Using the new card for purchases can trigger interest on those charges from day one. Missing a payment can void the intro rate on some cards. And approval is not guaranteed — the credit limit assigned may be smaller than what you hope to transfer.
Frequently asked questions
- Can I transfer any card to any card?
- Usually you cannot transfer between cards from the same issuer. Confirm eligibility before applying.
- What happens if I do not pay off the balance in the intro period?
- Whatever remains is charged the post-introductory APR going forward. Most offers do not retroactively charge interest, but some “deferred interest” promotions do — read the terms.