<program> <version>: Financial Calculations

This dialog computes various properties of annuities. The user types in four known values and presses a button to compute the unknown value:

PV = Present Value
FV = Future Value
NP = Number of Periods
PMT = Payment Amount
IR = Interest Rate per Period (%)

To solve the default example, press "FV". The result should be 23003.87 if the "Payment at End" option has been selected, and 23233.91 if "Payment at Beginning" has been selected.

Remember that negative numbers represent owed balances and payments into the account, positive values represent balances in your favor or payments out of the account.

All computations are deterministic except interest rate (IR), which is an iterative algorithm that may in some cases produce multiple results, only one of which is meaningful. If this happens, enter an estimate of the expected interest rate and press "IR" again. Also, interest rates are entered as percentages -- an 18% annual interest rate with 12 payments per year would be entered as 1.5.

For more on this topic, visit http://arachnoid.com/lutusp/finance.html.
