Learn what compound interest is, how it’s calculated—from annual rates to continuous compounding—and why it’s powerful for savings (and dangerous for debt).

As someone new to investing, what is one fundamental concept I should understand to build long-term financial success?

CNBC Select defines compound interest, how it works and ways to take advantage of it if you're looking for a new credit card or somewhere to stash your cash.

If you have a savings account, you might want to know how much you'll earn in interest for parking your cash there. Fortunately, calculating interest on a savings account is not as tough as you ...

Simple interest works in your favor when you borrow money, while compound interest is better for you as an investor.

When you borrow money, you’ll also pay interest on top of the amount you borrowed.. Interest is the money the lender gets for loaning you the money. Read Next: 5 Subtly Genius Moves All Wealthy People ...