This article reflects the impact of regulatory decisions of the Republic of Latvia on the food retail sector and sustainable product supply provided by food retail chains, as well as on operational trends. Attention has been drawn to the law of the Republic of Latvia on the key characteristics of foodstuffs and sales on the market. The research covers development of classification of the main instruments characterizing the products subject to the national regulation, as well as development of a scheme of the impact of the Latvian authorities on the operation of food retail chains. To implement the goal and tasks of the research, the authors have applied quantitative and qualitative research methods of economics, i.e., comparison, grouping, graphical, assessment and analytical methods. The research is based on the results of the previous research conducted by the authors so far, the law of the Republic of Latvia, scientific works published by other scientists, general and special literature and periodicals. The authors have summarized the findings and conducted comparative analysis of the regulatory decisions of the Republic of Latvia as well as presented a market survey within the research.