Credit cards are often seen as tools for convenience or emergencies. But used strategically, they can actually help you save — and even make — serious money. One of the most underrated and effective tactics? Using a 0% APR balance transfer credit card to eliminate high-interest debt. This credit card hack has helped many people save hundreds or even thousands of dollars in interest, and it’s easier to use than you might think.
If you're carrying a balance on a credit card with a high interest rate (often 20% or more), you're paying more than you should. A 0% APR balance transfer card gives you a set period — usually 12 to 21 months — where you pay no interest at all on the balance you move over. This means every dollar you pay goes toward the principal, not interest.
Let’s say you have $8,000 in credit card debt at 22% APR. If you’re making minimum payments, most of that money goes to interest. Transferring that balance to a 0% card and paying it down aggressively during the promo period can save you well over $1,000 — possibly more.
Here are a few strong balance transfer cards available now. All offer 0% APR for a generous window and have solid reputations.
This is one of the most extended 0% intro periods currently on the market. If you're looking for Breathing room and plan to chip away gradually, this card is ideal.

Citi has long been a go-to for balance transfers. The Diamond Preferred card consistently ranks high for its generous transfer window and its no-annual-fee feature.
If you want to mix debt payoff with some rewards, Discover offers a rare balance of savings and perks. Plus, Discover’s customer service gets strong reviews.
Even with these strong offers, there are things to be careful about:
Most cards charge 3% to 5% of the amount you transfer. On an $8,000 transfer, that’s $240–$400 upfront. Still, this is often far less than what you’d pay in interest over time.
Some cards require you to complete the transfer within 60 or 90 days to qualify for 0%. Miss that window, and you could lose the benefit.
Once the 0% period ends, the regular APR kicks in, which could be as high as the APR on the card you left. Be disciplined about paying off as much as possible during the no-interest window.
This tactic works best for people who:
If you're juggling multiple high-interest cards, a single 0% APR card can consolidate your debt and streamline payments. It doesn't erase the debt, but it gives you a much more affordable way to pay it off.

Most 0% APR cards require good credit. You can check your score for free through many banking apps or services like Credit Karma or NerdWallet.
If you need more than 18 months, go with a card like Wells Fargo Reflect or Citi Diamond Preferred. If you want to pair rewards with your transfer, Discover is a good pick.
Once approved, you’ll be given instructions on how to initiate the balance transfer. Some issuers let you transfer balances during the application process; others require you to wait until the card arrives.
Just paying the minimum won’t get you debt-free before the 0% window ends. Use a calculator to divide your total balance by the number of months in your promo period, and aim to pay that amount monthly.
Many cards charge interest on new purchases even during a 0% transfer window, unless the card also offers a 0% purchase APR. Focus on the transfer balance only.
If your credit score isn’t high enough for a top-tier 0% APR card, here are some alternatives:
Credit card companies make billions in interest charges every year. A 0% APR balance transfer card lets you stop contributing to that and start actually digging out of debt.
If you owe several thousand dollars and are currently stuck in a high-interest cycle, this hack alone can save you $800, $1,200 — even over $2,000 depending on your balance and how fast you pay it down.
It's not a trick or a loophole. It's an innovative use of a tool that the banks themselves offer, and many people don't take advantage of it simply because they don't know how it works.
Ready to cut your interest costs? Check your credit score, then pick a 0% APR balance transfer card that fits your goal. Need more time? Go with Wells Fargo Reflect®. Want a long window and no annual fee? Choose Citi® Diamond Preferred®. Prefer rewards too? Try Discover it® Balance Transfer. Apply, transfer your balance, and focus on paying it off before the promo period ends to save big.