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The Internal-Rate-of-Return approach and the AIRR paradigm: A refutation and a corroboration


  • Carlo Alberto Magni



This paper shows that the Internal-Rate-of-Return (IRR) approach is unreliable, and that the recently introduced Average-Internal-Rate-of-Return (AIRR) model constitutes the basis for an alternative theoretical paradigm of rate of return. To this end, we divide the paper into two parts: a pars destruens and a pars construens. In the "destructive" part, we present a compendium of eighteen flaws associated with the IRR approach. In the "constructive" part, we construct the alternative approach from four (independent) economic intuitions and put the paradigm to the test by showing that it does not suffer from any of the flaws previouslyinvestigated. We also show how the IRR, as a rate of return, is absorbed into the new approach.

Suggested Citation

  • Carlo Alberto Magni, 2012. "The Internal-Rate-of-Return approach and the AIRR paradigm: A refutation and a corroboration," PROYECCIONES FINANCIERAS Y VALORACION 010084, MASTER CONSULTORES.
  • Handle: RePEc:col:000463:010084

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    Cited by:

    1. Cuthbert, James R. & Magni, Carlo Alberto, 2016. "Measuring the inadequacy of IRR in PFI schemes using profitability index and AIRR," International Journal of Production Economics, Elsevier, vol. 179(C), pages 130-140.
    2. Magni, Carlo Alberto, 2015. "Investment, financing and the role of ROA and WACC in value creation," European Journal of Operational Research, Elsevier, vol. 244(3), pages 855-866.
    3. Carlo Alberto Magni, 2015. "Investment, financing and the role of ROA and WACC in value creation," Department of Economics 0050, University of Modena and Reggio E., Faculty of Economics "Marco Biagi".
    4. Dean Altshuler & Carlo Alberto Magni, 2015. "Introducing Aggregate Return on Investment as a Solution to the Contradiction Between Some PME Metrics and IRR," Centro Studi di Banca e Finanza (CEFIN) (Center for Studies in Banking and Finance) 15209, Universita di Modena e Reggio Emilia, Dipartimento di Economia "Marco Biagi".
    5. Giuseppe Bonazzi & Mattia Iotti, 2016. "Evaluation of Investment in Renovation to Increase the Quality of Buildings: A Specific Discounted Cash Flow ( DCF ) Approach of Appraisal," Sustainability, MDPI, Open Access Journal, vol. 8(3), pages 1-17, March.
    6. Andrea Marchiioni & Carlo Alberto Magni, 2016. "Sensitivity analysis and investment decisions: NPV-consistency of rates of return," Department of Economics 0089, University of Modena and Reggio E., Faculty of Economics "Marco Biagi".
    7. Carlo Alberto Magni & Ken V. Peasnell, 2015. "The Term Structure of Capital Values:An accounting-based framework for measuring economic profitability," Department of Economics 0060, University of Modena and Reggio E., Faculty of Economics "Marco Biagi".
    8. repec:nos:bedcdu:nc11 is not listed on IDEAS

    More about this item


    Internal rate of return; capital; average; net present value;

    JEL classification:

    • G30 - Financial Economics - - Corporate Finance and Governance - - - General
    • G31 - Financial Economics - - Corporate Finance and Governance - - - Capital Budgeting; Fixed Investment and Inventory Studies
    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • G00 - Financial Economics - - General - - - General
    • M41 - Business Administration and Business Economics; Marketing; Accounting; Personnel Economics - - Accounting - - - Accounting

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