Finance.Nper Method

FinanceNper Method

Returns the number of periods for an investment for which periodic, and constant payments are made and the interest rate is constant.

Namespace: Imsl.Finance
Assembly: ImslCS (in ImslCS.dll) Version: 6.5.2.0

Syntax

C++

Copy

public static double Nper(
	double rate,
	double pmt,
	double pv,
	double fv,
	FinancePeriod period
)

Public Shared Function Nper ( 
	rate As Double,
	pmt As Double,
	pv As Double,
	fv As Double,
	period As FinancePeriod
) As Double

public:
static double Nper(
	double rate, 
	double pmt, 
	double pv, 
	double fv, 
	FinancePeriod period
)

static member Nper : 
        rate : float * 
        pmt : float * 
        pv : float * 
        fv : float * 
        period : FinancePeriod -> float

Parameters

rate: Type: SystemDouble
A double which specifies the interest rate.
pmt: Type: SystemDouble
A double which specifies the payment.
pv: Type: SystemDouble
A double which specifies the present value.
fv: Type: SystemDouble
A double which specifies the future value.
period: Type: Imsl.FinanceFinancePeriod
A int which specifies the time in each period when the payment is made (either AtEnd or AtBeginning).

Return Value

Type: Double
A int which specifies the number of periods for an investment.

Remarks

It can be found by solving the following:

If ,

${\it pv} + {\it pmt} \times {\it nper} + {\it fv} = 0$

If $rate \ne 0$ ,

${\it pv} (1 + {\it rate})^{\it nper} + {\it pmt} \left[ {1 + {\it rate} \left( {\it period} \right)} \right] {{(1 + {\it rate})^{\it nper} - 1} \over {\it rate}} + {\it fv} = 0$

Reference

Finance Class

Imsl.Finance Namespace

Other Resources

Example