The article discusses the goals and principles of the State System of Scientific and Technical Information (SSSTI) of the Republic of Belarus as an integral part of the national innovation sphere, which accumulates, stores and processes data created in the country in the field of science and technology, their inclusion in the global information space and access of Belarusian users to its resources. The author provides a methodology for assessing and determining the optimal volume of expenditures for the SSSTI, its functioning and development.