The discount rate refers to the interest rate used when calculating the net present value (NPV) of an investment. It represents the time value of money, which is the concept that a sum of money today ...

It certainly feels like everything is on sale all the time these days. But not all sales are created equal. It’s especially important to recognize this during the holidays, when shopping holidays ...

When you apply for a mortgage, your lender will probably quote you an interest rate -- say, 4.5%. The problem with the interest rate is that is doesn't usually reflect the true cost of borrowing money ...