Subsidiary Fund - the fund of the following fund holders of the BSU FL:
- Department of Information Service of the Educational Process;
- Department of Information Services for Scientific Research;
- Service Department of the Faculty of Law;
- Service Department of the Faculty of Chemistry;
- Service Department of Faculties of Philology and Economics;
- Service Department of the Faculties of Radiophysics and Computer Technologies, Biology and Social and Cultural Communications;
- Service Department of the Faculty of International Relations;
- Service Department for Faculties of Journalism and Philosophy and Social Sciences;
- Department of Humanitarian and Educational Work and Popularization of Unique Books;
- Scientific and Methodical Department;
- Information Resources Acquisition Department;
- Department of Information Resources Cataloguing and Support of the Reference and Search Service;
- Directorate;
- Libraries of Offices and Departments of BSU.