Purpose of the study: The purpose of this article is to examine the influence that tax authorities have had on the growth and progress of local governments in Poland. Through an analysis of the financial autonomy, degree of decentralisation, and local tax policy of Polish municipalities, this research endeavours to illuminate the correlation between tax authorities and the growth of local governments in Poland.
 Methodology: This article conducts a comprehensive literature review on the subject of local tax competition studies in Poland. In addition, empirical experiments conducted on Polish data to determine the concept's applicability throughout the region are included.
 Main findings: Based on the analysis, Poland holds a considerable level of financial autonomy, which is attributed to its authority in determining local tax rates and its freedom to finance investment initiatives. Moreover, research has revealed that the fiscal policies implemented by neighboring municipalities in Poland exert a substantial influence on the choices made by local legislators. This suggests that competition and local tax policy have a significant impact on the evolution of local administrations across the nation.
 Application of the study: The findings of this study have significant implications for policymakers and local authorities in Poland. Understanding the impact of tax authorities on the development of local governments can help in formulating effective fiscal policies and strategies for sustainable development. By recognising the influence of tax regulations and revenue diversification on fiscal sustainability, policymakers can make informed decisions regarding local tax policies and financial autonomy.
 Originality/Novelty of the study: In the article, the author emphasised the examination of the impact of tax authorities on the development of local governments in Poland, particularly in the context of the limited tax autonomy of Polish local authorities. The study delves into the unique challenges and opportunities that arise from this restricted tax autonomy and how it influences the fiscal sustainability and development of local governments in the country. Additionally, the analysis of the effects of municipal tax policy, including the influence of neighbouring municipalities' tax rates on local politicians' decisions, provides valuable insights into the dynamics of tax competition and its implications for local governance in Poland.