Many issuers use your card’s average daily balance to calculate credit card interest. Getting your average daily balance involves adding up the balance on your card from each day in the billing period and dividing that sum by the number of days in the billing period. Interest calculations proceed from there.

From good vs. bad rates to avoiding common pitfalls, credit card APR can significantly impact your financial health.

Timing really is everything when it comes to credit cards – especially when a promotional 0% APR period ends. What happens when your credit card's 0% intro APR period concludes and what does it mean for credit cardholders?

Here are three purchases you should avoid putting on your credit card. Your monthly housing cost is likely your most significant monthly expense, and putting that payment on your card will likely result in a hefty transaction fee and rapidly accumulating interest.

Credit cards with 0% annual percentage rates provide the advantage of avoiding interest for a limited duration. Here's everything you need to know before applying for one of these cards.

It’s no surprise that credit card interest charges can add up. Some credit cards charge an APR, or annual percentage rate, that’s over 20 percent. However, 0 percent APR credit cards can offer a break from mounting interest charges by giving you the chance to pay down your balance without incurring interest for a certain period of time.

Whether you’re looking for your first credit card or you already have several, it’s not always easy to figure out how to choose the right credit card. With so many options available, it can be overwhelming to determine which credit card suits your needs.

It's helpful to know how interest is calculated so you can figure out how much you're paying in interest each month. Here's how credit card interest calculated.