NumberOfPeriods function

Declaration

function NumberOfPeriods(ARate: Float; APayment: Float; 
 APresentValue: Float; AFutureValue: Float; 
 APaymentTime: TPaymentTime): Float

Description

NumberOfPeriods calculates the number of periods ( n) needed to obtain future value of an investment in the cash flow formula (see CashFlowFunctions). The function result is the number of periods a payment APayment ( PMT) must be paid in order to obtain a future value AFutureValue for an investment of a start value APresentValue ( PV), where APayment ( PMT) is invested at a rate ARate ( q).

The APaymentTime parameter determines whether the investment (payment) is an ordinary annuity or an annuity due: ptEndOfPeriod NumberOfPeriods must be used if payments are at the end of each period. If the payments are at the beginning of the periode, ptStartOfPeriod must be used.

See also

• FutureValue
• InterestRate
• Payment
• PresentValue
• TPaymentTime
• CashFlowFunctions