Read on to learn more about compound interest and how to calculate it using Excel. Let's say that you have an account with a deposit of $100 that earns a 10% annual compounded interest rate.

NerdWallet's credit card interest calculator can do the math for you. Start plugging in numbers, or read below for guidance on how to get the most accurate result. Whether you have a grace period ...

Related: What is a good APR for a credit card? Credit card interest typically accrues daily, so it's helpful to know how to calculate it based on whether you're charged daily or monthly ...