The paper is devoted to considering the methodology of economic analysis for managing regional development based on financial modeling and estimates obtained using both statistical observations and financial reporting data of Russian companies. Particular attention is paid to comparing estimates of gross value added (GVA) within the framework of the Statistics National Accounts methodology and based on financial reporting data, which may be of interest for expanding the information base for the analysis of regional authorities. The article formulates proposals on possible directions for using GVA estimates by state/regional authorities for a retrospective analysis of the state and dynamics of the regional economy, issues of regional economic policy, and the development of investment programs for the regional economy. They are illustrated using the example of the Krasnoyarsk Territory.