The Best (and Worst) Ways to Use a Credit Card
Quick Answer
A credit card can help you build credit, manage your money, earn rewards and benefit from consumer protections. But it could tempt you to make impulse purchases, live above your means and land you in a cycle of fees and debt.

Ideally, a credit card is a convenience. It allows you to avoid carrying cash and can buy you some time before you need to pay off your purchases.
A credit card can also help you manage your money, cover emergency expenses, build credit and earn rewards. But it could tempt you to buy on impulse, live above your means and land you in a cycle of fees and escalating penalty interest rates. Let's go over some of the best—and worst—ways to use a credit card.
The Best Ways to Use a Credit Card
Used responsibly, a credit card can help you manage your finances and improve your credit.
To Build Credit
There are a few ways you can use a credit card to build your credit:
- Become an authorized user. Becoming an authorized user means that a credit card holder has allowed you to make charges on their account. It's important that you and the primary user agree on whether you will actually use the card and, if so, how much you will spend. Authorized users are not responsible for paying credit card bills, but the card's payment history will be added to their credit reports.
- Get a secured credit card. Secured credit cards are cards that require a deposit, which is typically the same amount as the credit limit. They work just like traditional, unsecured credit cards, and some have a feature that allows you to "graduate" to an unsecured card after a certain number of on-time payments.
- Explore alternative credit cards. Some credit cards rely on data other than credit scores to issue credit cards without a deposit. Interest rates may be higher, and they may have fees, but cards that consider alternative credit data can offer a good starting point.
To Finance New Purchases
If your refrigerator stops working and you need a new one on short notice, or you're faced with another financial emergency, a credit card can save the day. It pays to know the interest rates of your credit cards and how it will affect your costs. If you are going to need to carry a balance, you'll want to use the card with the lowest interest rate.
To Pay Off Debt
If you have a good or excellent credit score, you may qualify for a credit card with a 0% intro APR on purchases or balance transfers. Using the card to pay off other debt can potentially save you money on interest. Take a look at the math to be sure you are saving money, and make a plan to pay off the balance before the intro period ends and your interest rate goes up. It's also smart to know if this could affect your credit score. (A credit score simulator can help you make an educated guess.)
To Earn Rewards
If you pay off your credit card bill in full every month, you can maximize the value of your rewards. (You will also earn rewards if you carry a balance, but the interest you pay can outweigh your rewards.) If you play your cards right, you might be traveling for free or buying holiday gifts with points or cash back.
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