The article is devoted to the neoclassical theory of the investment process. The article discusses why neoclassical theorists were less critical of the importance of trade in making a profit. They believed that it could be mutually beneficial, but not equivalent in the traditional sense of the word, suggesting that the parties involved in the transaction could benefit by giving each other a higher subjective value for the goods received.

The article provides a profound analysis of scientific schools, various theoretical perspectives on economic development, and their impact on economic growth. In particular, within the framework of classical, neoclassical, and modern endogenous growth theories, the sources of economic growth, capital accumulation, labor productivity, innovation, and the role of human capital development are substantiated. At the same time, the main factors ensuring economic growth in the conditions of Uzbekistan are analyzed: increasing the level of industrialization, improving the investment climate, expanding export potential, developing the digital economy, and supporting small business and private entrepreneurship. The study develops forecast indicators for 2026–2030 through macroeconomic models used to assess economic growth, including a model of production functions and factors influencing GDP dynamics. Additionally, the goals and objectives defined within the framework of the “Uzbekistan – 2030” strategy improving public welfare, ensuring sustainable economic growth, increasing the share of high-value-added products, and ensuring the balanced development of regions have been scientifically substantiated

This scientific article discusses the theoretical foundations of resource taxation, its economic essence and role in ensuring the stability of the state budget. The study analyzes theoretical approaches to the taxation of natural, financial and human resources, their impact on economic efficiency and their significance in fiscal policy. It also examines the stages of development of the resource tax system, the principles of their establishment and the scientific basis from the point of view of economic theories - classical, neoclassical and institutional approaches. The results of the study show the possibilities of financing state socio-economic development programs, rational use of natural resources and ensuring environmental sustainability through resource taxes.

Ensuring sustainable and inclusive development of regional economies stands as a central challenge for contemporary economic policy and regional planning. This paper develops the theoretical foundations for econometric modeling of regional development, aiming to provide a rigorous methodological framework for quantifying growth drivers and producing reliable forecasts of regional economic performance. The primary objective is to specify and justify econometric models that capture both the long-run relationships and short-run dynamics among core regional indicators (GRDP, industrial output, retail turnover, investment inflows, employment and income levels, and institutional variables). The theoretical discussion integrates perspectives from neoclassical growth theory, endogenous growth models, institutional economics and evolutionary economics to frame the empirical strategy

This article examines the "Other Canon" economic schools, which present alternative views to the dominant neoclassical theory, and their approaches to regional economic development in Uzbekistan. It analyzes how institutionalism, structuralism, and Marxism explain regional inequalities, center–periphery dynamics, and the significance of state intervention. Based on the theoretical foundations of these heterodox schools, the author proposes practical recommendations for revising regional development policies in the context of Uzbekistan.