This entry explores the concept of national income, a pivotal performance indicator of modern economies, from the perspective of Islamic economics. The study underscores the limitations of conventional metrics, such as Gross Domestic Product, in capturing critical aspects including social welfare, income distribution, equity, and environmental sustainability. In the initial phase, the historical evolution of national income accounting and conventional calculation methods is examined, with a focus on quantitative production value. Subsequent analysis reveals that the alternative model proffered by Islamic economics is predicated on the objective of falah (holistic welfare) and does not perceive national income as merely a material measure. As outlined in Islamic economics, the significance of incorporating moral and social tenets, such as the differentiation between halal and haram, the deduction of negative externalities (e.g., environmental degradation), the incorporation of distribution mechanisms (e.g., zakat), and the mitigation of waste, is emphasized. In summary, the results of this study demonstrate that Islamic economics offers a more comprehensive and humanistic indicator of well-being by integrating economic activity with social justice and ecological balance.