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A balance transfer credit card lets you move debt from a high-APR card to a 0% intro APR card, typically with a 3-5% transfer fee. Can save thousands in interest if used correctly.
Balance transfer cards are a tool for accelerating debt payoff: by moving high-APR debt to a 0% APR card during the intro period, the borrower pauses interest accrual and channels every payment toward principal. The math works only if the borrower can pay off the full balance during the intro period — otherwise the regular APR (typically 18-25%+) kicks in on the remaining balance.
A borrower with $10,000 at 22% APR transfers to an 18-month 0% APR card with a 3% transfer fee. Cost: $300 fee. Benefit: ~$3,000 in interest avoided over 18 months. Net savings: ~$2,700 if the balance is paid off within the intro period.
Compared to debt consolidation loans: Personal loans give a fixed APR (often 8-15%) and a fixed payoff timeline; balance transfers give 0% but require self-discipline to pay off in the window. Risks: If you keep using the original card AND the balance transfer card, you can double your debt; new purchases on balance transfer cards often don't get the 0% rate.