Compound interest is a favorable method of compensating lenders and depositors wherein interest is periodically credited to the principal, and subsequent interest is paid on the increasing balance.

The Rule of 72 is a shortcut or rule of thumb used to estimate the number of years required to double your money at a given annual rate of return and vice versa.

There is an often-told story that when Albert Einstein was once asked what mankind’s greatest invention was, he replied: “Compound interest.” There’s even one claim that Einstein called compound ...