Abstract
The article discusses tax instruments for regulating the stock market in the framework of modern scientific research. The relevance of the topic is due to the growing role of tax policy in ensuring the stability of financial markets in the context of globalization and increasing macroeconomic instability. The purpose of the study is to systematize and analyze modern scientific approaches to assessing the impact of tax instruments on the stock market. The methodological basis of the study is content analysis, comparative analysis and a systematic approach applied to scientific publications indexed in the Scopus database. The study identified the main areas of influence of tax regulation, including the impact on investment activity, the value of companies, stock market volatility, corporate behavior and the level of financial risks. The results of the study show that tax instruments have a direct and indirect impact on the stock market. Direct impact is associated with changes in investment and financial performance of companies, and indirect mechanisms are implemented through the formation of Corporate Social Responsibility, increasing transparency and improving corporate governance. It was found that the effectiveness of tax regulation depends on the institutional environment, macro-financial conditions and external factors. The scientific novelty of the study is the systematization of modern scientific results and the development of an author's integrated model of tax regulation of the stock market. The practical significance of the work consists in the possibility of using the conclusions obtained when forming a balanced tax policy aimed at improving the stability and efficiency of stock markets.