Finance.Irr Method (Double[], Double)

FinanceIrr Method (Double, Double)

Returns the internal rate of return for a schedule of cash flows.

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

Syntax

public static double Irr(
	double[] pmt,
	double guess
)

Public Shared Function Irr ( 
	pmt As Double(),
	guess As Double
) As Double

public:
static double Irr(
	array<double>^ pmt, 
	double guess
)

static member Irr : 
        pmt : float[] * 
        guess : float -> float

pmt: Type: SystemDouble
A double array which contains cash flow values which occur at regular intervals.
guess: Type: SystemDouble
A double value which represents an initial guess at the return value from this function.

Type: Double
A double which specifies the internal rate of return.

Remarks

It is found by solving the following:

$0 = \sum\limits_{i = 1}^{\it count} {{{\it value}_i } \over {\left( {1 + {\it rate}} \right)^i }}$

where ${\it value}_i$ = the cash flow, ${\it rate}$ is the internal rate of return.