One of the unique features of CMI in the Indian context is that its funding comes from multiple, diverse sources, both public and private. This has given the Institute the freedom to organize its activities in a manner that is best suited to achieving its goal of excellence in research and teaching.
The Institute receives substantial support for its activities from the Department of Atomic Energy (DAE), through the National Board for Higher Mathematics (NBHM). In addition, the Institute has received a major grant for the period 2006--2009 from the Board of Research in Nuclear Sciences (BRNS) and the Department of Science and Technology (DST). This grant is for computational equipment, library expenses and support for academic visitors. In the past, the Indian Space Research Organization (ISRO) has also been an important source of funding.
The Institute also receives generous contributions from the private sector. During the formative years of the Institute, the Southern Petrochemical Industries Corporation (SPIC) has been a major source of funding and infrastructural support for CMI. Currently, the Shriram Group Companies, Chennai play a crucial role in providing and organizing private funding for the Institute.
The land for the new Institute campus at Siruseri was acquired through a grant from the Shriram Group Companies. Major financial contributions towards building up the new campus have come from Matrix Laboratories, Hyderabad, the Chennai Willingdon Corporate Foundation, Take Solutions, Chennai, the Infosys Foundation, Bangalore and Tata Consultancy Services.
In addition to grants from government and private sources, CMI also receives funding for research projects from government agencies such as Department of Science and Technology (DST) and Defence Research Development Organization (DRDO) as well as from private organizations.