In the pursuit of sustainable development, it is crucial to examine whether technological innovation (TI) creates equitable economic distribution or widens income inequality (II). The study aims to investigate TI’s impact on II in BRICS-T and BRICS PLUS-T countries within the context of the technological Kuznets curve (TKC). Along with TI, financial development is a driving force for economic development, and the research explores FD’s influence on II. To analyze these relationships while accounting for globalization (G), the method of moments quantile regression (MMQR) is used. The study’s findings validate the U-shaped TKC, suggesting that TI, in the initial stage, reduces II. However, beyond a certain threshold, TI² significantly widens II in both country groups. We found that the impact of TI on II was more pronounced in BRICS-T countries than in BRICS-PLUS-T countries, and the inclusion of newly added countries did not significantly affect the U-shaped relationship. Additionally, by enhancing financial inclusion, FD had a substantial and negative effect on II. In contrast, G, which concentrates wealth, was associated with higher II in both groups. This study offers a significant contribution by introducing the TKC in the context of BRICS-T and BRICS PLUS-T countries. Furthermore, the research contributes to the literature by evaluating the influence of FD and G within the context of TKC and applying novel MMQR. The study highlights a pathway to achieving the Sustainable Development Goals (SDGs 1, 7, and 10) and provides a policy framework for strategically allocating funds to technological advancements to reduce II.

Objective: The purpose of this study is to investigate the effects of Tax Competition for Turkey, as well as the aspects of basic taxes like Personal Income Tax and Corporation Tax and evaluate the results. In this context, the impact of foreign direct investments on economic growth in Turkey is investigated. Theoretical Framework: Theoretically, it is accepted that foreign direct investment will positively affect economic growth. This study investigates the practical implications of this theory for Turkey. Method: International Comparative Analysis and various tables and graphics were used in this study to analyse the variance of Personal Income Tax and Corporation Tax by years. In addition study applies regression analysis on direct foreign inflow and economic growth in Turkey for 1974-2019 period. Results and Discussion: Regression analysis was performed on the time series of foreign capital investments and economic growth. However, it is concluded that foreign capital investments do not positively affect economic growth over the 1974-2019 period since foreign capital investments in Turkey reached their usual level only after 2002. Research Implications: This study concludes that foreign direct investment (FDI) does not always positively affect economic growth for all countries. Originality/Value: The study is original in that it shows that a generally accepted theory may have different results in practice for some countries.