This article discusses the issues of effective use of financial instruments to reduce the share of the shadow economy in the country in recent years, as well as the implementation of measures to eliminate conditions and violations that contribute to the secret economy, through the use of tax administration tools developed by tax authorities. In addition, the article analyzes the timely disclosure of tax evasion schemes, develops tax scientific and practical conclusions and proposals to reduce costs associated with ineffective methods of administration, further optimize the structure of tax authorities by centralizing individual functions, increase the efficiency of tax administration, conduct field research research and eliminate contradictions in legislation.

This article analyzes the incentive and resource-mobilizing potential of tax instruments in financing ecological innovations. In the context of increasing climate change and environmental pollution, the development and implementation of “green” technologies require significant volumes of sustainable financial resources. The purpose of the study is to generalize international approaches to the use of tax mechanisms for supporting and financing ecological innovations, as well as to substantiate practical proposals for priority directions under the conditions of Uzbekistan. Along with the literature review, the study conducts a descriptive analysis based on indicators for the period 2021-2024, compares the volume of atmospheric pollutant emissions across regions, and evaluates the dynamics of electricity generation at solar and wind power plants. The results indicate variability in emission levels over the years and high concentration in certain regions; at the same time, a sharp increase in renewable energy production was recorded in 2024. These findings provide a basis for improving the design of tax policy to stimulate ecological innovations, taking into account regional and sectoral characteristics.

This scientific study is devoted to a comparative analysis of the economic efficiency of tax incentives and subsidy policies in the development of the hotel industry in Uzbekistan and South Korea. The work comprehensively studies the methods of financial stimulation of the hotel sector, their impact on investment attractiveness and regional economic 

growth based on the experience of the two countries. The main objective of the study is to determine the effectiveness of economic instruments that support the development of the hotel industry, in particular, through tax incentives and state subsidies. At the same time, the practical results of public-private partnership mechanisms are also evaluated based on empirical evidence. During the study, the relative advantages of the effectiveness of financial approaches used in Uzbekistan and South Korea are determined; The impact of tax and subsidy policies on reducing interregional disparities and increasing tourism potential is assessed; An incentive model adapted for Uzbekistan, based on international best practices, is developed. This study is of practical and theoretical importance for economists, analysts, tourism decision-makers, investment policymakers, as well as postgraduate researchers. The study not only highlights existing economic and institutional problems, but also puts forward scientifically based proposals for their solution. Therefore, this work serves as a reliable source for creating a sustainable tourism policy. The scientific novelty of the study is the first systematic comparative analysis of the practice of applying tax incentives and subsidies in the hotel industry of Uzbekistan and South Korea. This work identifies the impact of tax incentives on criteria such as investment activity, regional development, and service quality. In addition, an incentive model adapted to national conditions and focused on economic efficiency was developed, and practical recommendations were given for the development of tourism infrastructure based on public-private partnerships.

This article examined the issue of regulating the population's income using fiscal instruments. The study examined theoretical and empirical scientific literature on assessing the impact of taxes on reducing income inequality. The article also analyzes the structure of population income and the impact of fiscal instruments on income inequality. A regression analysis of factors influencing the uneven distribution of population income (Gini coefficient) was conducted. As a result of the research and analysis, conclusions were drawn about the regulation of population incomes by fiscal instruments.

In this article, the issues of effective use of financial instruments to reduce the share of the secret economy in our republic and the fact that the work of tax authorities to fight against the widespread practice of hiding the amount of income by taxpayers and using tax evasion schemes are discussed in a scattered and consistent manner, which leads to a decrease in tax discipline and the preservation of the scale of the secret economy. a study was conducted on the analysis and evaluation of the results of the deterioration of business conditions for honest entrepreneurs, and scientific and practical conclusions and proposals were developed for its application.

This article describes large-scale reforms aimed at creating favorable conditions for doing business in the tax and financial sectors, improving the investment climate and further strengthening the confidence of business circles in our republic in recent еars. At the same time, such areas as underground trade and public catering, road transport, housing construction and repair, the provision of personal services were studied, scientific and practical conclusions and proposals were formed on foreign experience and its application in our country.

The article highlights the methodological foundations of applying fiscal policy tools to legalize the shadow economy. It examines opportunities for transitioning from the informal to the formal sector through tax optimization, digitalization, and enhanced budget transparency. Based on international experience, recommendations tailored to Uzbekistan’s context are proposed.

This article analyzes the methodological foundations for applying Islamic financial instruments in Uzbekistan and proposes key directions for their improvement in line with international standards. A comparative evaluation of AAOIFI and IFSB guidelines, along with the experiences of leading Islamic finance markets such as Malaysia, the UAE, and Turkey, is conducted. The findings indicate that the development of Islamic finance in Uzbekistan requires enhancements in the legal framework, institutional structure, product design methodology, risk management practices, Shariah governance, and tax treatment. Addressing these methodological gaps is essential for ensuring the sustainable and effective growth of Islamic finance in the country.

The dissertation article explores the essence and highlights the structural elements of the informal sector of the economy, and reveals the content of the category of the informal economy from the point of view of taxation. Based on a review of theoretical literature, international practice and analysis of the situation in Uzbekistan, proposals and practical recommendations for the effective use of taxation mechanisms in containing and reducing the size of the shadow economy have been formed.