The five inputs 1. Present value/Future value - The amount of money being invested/received today/ in future. 2. Rate - The rate at which the money is compounded. 3. Term - Total term for which the money is invested. 4. PMT - The periodic payment that will be made/received. 5. Annuity due/Ordinary annuity - The type of payment, whether it is made at the beginning of the period or end of the period.
(What are some of the trade offs involved with these inputs? Is there sometimes a cost that follows a benefit?)