Credit cards have a reputation for trapping people in debt. But the right card strategy can actually accelerate your escape from high-interest debt.

The key tool here is a balance transfer card. These cards offer a 0% introductory APR period, typically lasting 6 to 21 months, on balances you transfer from other cards. During this window, you pay no interest. Every dollar you put toward the balance reduces principal instead of enriching the card issuer.

Here's the math. Say you carry $5,000 on a card charging 22% APR. At that rate, you pay roughly $91 monthly just in interest alone. With a balance transfer card offering 0% for 12 months, that entire $91 becomes available to attack the principal. Over a year, you eliminate interest charges worth $1,092. That's real money.

The strategy only works if you meet three conditions. First, you must stop using the old card immediately. Adding fresh charges while transferring a balance defeats the entire purpose. Second, you need a concrete payoff timeline. Calculate how much you must pay monthly to clear the balance before the promotional period ends. Most balance transfer cards revert to standard APRs of 15% to 25% after the intro rate expires. Third, watch for transfer fees. Most cards charge 3% to 5% of the amount transferred. A $5,000 transfer might cost $150 to $250 upfront. The interest savings still beat this fee, but factor it into your payoff calculation.

Balance transfer cards work best for people with decent credit scores, typically 670 or higher. Card issuers like Chase Slate Edge and Citi Simplicity offer 0% periods ranging from 12 to 21 months. Some charge no transfer fee during their promotional window.

The discipline required separates