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Profitability determinants of Portuguese knowledge-intensive business services: empirical evidence using panel data models


  • Paulo Maçãs Nunes
  • Zélia Serrasqueiro


This article studies the profitability determinants of knowledge-intensive business services (KIBS). To do so, we consider a sample of 187 Portuguese KIBS for the period 2002 to 2009, using dynamic panel estimators as estimation method. The results indicate that size, age, liquidity, long-term debt and R&D expenditure are determinants stimulating the profitability of Portuguese KIBS, with risk being a restrictive determinant. In addition, profitability is found to be persistent over time. The empirical evidence lets us make important suggestions for political decision-makers and the owners/managers of Portuguese KIBS.

Suggested Citation

  • Paulo Maçãs Nunes & Zélia Serrasqueiro, 2015. "Profitability determinants of Portuguese knowledge-intensive business services: empirical evidence using panel data models," Applied Economics Letters, Taylor & Francis Journals, vol. 22(1), pages 51-56, January.
  • Handle: RePEc:taf:apeclt:v:22:y:2015:i:1:p:51-56 DOI: 10.1080/13504851.2014.925041

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    References listed on IDEAS

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