There are two possible configurations for collecting installment payments with compound interest:

• Collection at the beginning of the period;
• Collection at the end of the period.

Collection at the beginning of the period is calculated as follows:

1. i = Interest rate
2. n = Number of installments
3. PV = Present Value (total amount of the purchase without interest)
4. Installment = 
   

Collection at the end of the period is calculated as follows:

1. i = Interest rate
2. n = Number of installments
3. PV = Present Value (total amount of the purchase without interest)
4. Cash Flow Multiplier =
   
5. Installment = PV x Cash Flow Multiplier

1. i = 1%
2. n = 12
3. PV = 1000
   

1. i = 1%
2. n = 12
3. PV = 1000
4.