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# numpy.irr

`numpy.``irr`(values)

  Return the Internal Rate of Return (IRR).

  This is the rate of return that gives a net present value of 0.0.

  Parameters: | values : array_like, shape(N,) Input cash flows per time period. At least the first value would be negative to represent the investment in the project.
  Returns: | out : float Internal Rate of Return for periodic input values.

  Examples

      >>> np.irr([-100, 39, 59, 55, 20])
      0.2809484211599611

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