The original amount of money borrowed or loaned is called the ‘principal’. The ‘interest rate’ is the % of the principal that is added on over the course of one year as interest.

The U.S. has a massive budget and eye-popping debt precisely because Congress annually fleeces the rich. To believe otherwise is to believe in Santa Claus, ferociously dumb markets, or both. What&rsqu ...

Rising interest rates are changing the math for pension holders. If interest rates continue to increase, lump sums may not be worth as much as they are today. Now is a great time to evaluate your ...

Credit card interest rates, which can soar to 18% ... power of compounding long before financial calculators existed. The math behind it works because doubling is linked to how percentages ...

Interest rates are traded, too ... for 44% odds of that additional move. The math can get far more complicated because ...