IRR Function [VBA]

Calculates the internal rate of return for an investment.


This constant, function or object is enabled with the statement Option VBASupport 1 placed before the executable program code in a module.


IRR(ValueArray as Double , [Guess as Variant]) As Double

Return value:



ValueArray: The array of values of the cash-flow. The values represent cash flow values at regular intervals, at least one value must be negative (payments), and at least one value must be positive (income).

Guess: An initial estimate at what the IRR will be.

Error codes:

5 Neplatné volanie procedúry


REM ***** BASIC *****
Option VBASupport 1
Sub ExampleIRR
 Dim cashFlow(0 to 3) As Double
 cashFlow(0) = -10000
 cashFlow(1) = 3500
 cashFlow(2) = 7600
 cashFlow(3) = 1000
 irrValue = IRR(cashFlow) * 100
 Print irrValue ' returns 11.3321028236252 . The internal rate of return of the cash flow.
End Sub

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