Annuity calculators are used to compute the time value of money. The calculation is normally performed at a given interest rate, over a specified period of time. Standard calculations include present value, and future value. Annuity calculators may also calculate a perpetuity, which is an infinite and constant stream of identical cash flows. More information and examples of annuity
. calculators may be found at http://www.moneychimp.com/calculator/annuity_calculator.htm
