Kherbachi, Sonia2023-09-172023-09-1720192352-99622572-0147http://hdl.handle.net/123456789/15965The influence of the value of deferred tax expense on firm performance is recognized giving the opportunity for managers to practice earning. The aim of this paper is to determine the negative impact of deferred ta on firm performance using a case study with a leader manufacturer in Algeria “General Emballage”. The income statement sheets over three years show that corporate income tax plays negatively the economic profitability of the firm.enDeferred taxFirm performanceEconomic profitabilityCorporate income taxArticle