“Compound interest is the eighth wonder of the world. He who understands it, earns it; he who doesn’t, pays it.” – Albert Einstein This quote is one many investors know well. It succinctly sums up the ...

Editor's Note: APYs listed in this article are up-to-date as of the time of publication. They may fluctuate (up or down) as the Fed rate changes. Select will update as changes are made public. Some ...

The most powerful force in the world of investing is compound interest. In fact, Albert Einstein once called compound interest the “eighth wonder of the world!” But what is compound interest? Why was ...

Simple interest calculates earnings or payments based solely on the initial principal, while compound interest grows by calculating interest on both the principal and the accumulated interest over ...

Compound interest is the interest earned on money that has already earned interest. Compound interest helps your money grow faster, with no additional investment on your part. Many or all of the ...

Capital at risk. The value of your investments can go up and down, and you may get back less than you invest. Compounding is a process where interest is credited, not only to the original ‘principal’ ...

Liliana Hall was a writer for CNET Money covering banking, credit cards and mortgages. Previously, she wrote about personal credit for Bankrate and CreditCards.com. David McMillin writes about credit ...