This article presents the assessment of changes in the balance between revenues and expenditures of the social insurance budget. Given assessment of changes is based on the analysis of the consequences of demographic ageing, such as an irreversible factor of change in the age structure of the labour market and transformational changes in the pension system. To assess the financial stability of the social insurance budget for the coming period, a mechanism for assessing the expenditures of pension provision proposed by the authors was used. There is examined the issue of financial consequences of the reduction in the number of employees. Based on the research results, proposals for improving socioeconomic policies were developed, taking into account the use of modern innovative methods, approaches and forecast calculations to mitigate the impact of demographic factors.