Abstract CSR and a company's financial performance are linked with a phenomenon that investigated with number of research projects actuality undertaken throughout the globe. According to these study reports, a favourable association exists between a company's CSR practices and its financial success. To study this association, the researchers performed a regression analysis, which was preceded by the presentation of numerous measurements that they are employed key financial performance criteria. The paper uses Secondary data from 6 public and 6 private sector company’s annual reports with government data from csr.gov.in. The period of study i.e., the data from the research work is done is for the period of 5 years from 2016-17 to 2020-21. The data collected were analysed using the statistical tools ANOVA and correlations. The results revealed a significant difference in the CSR expenditure of public and private companies with the public sector companies are spending much more rather than the Private sector and significant relation in the corporate social responsibility spending as a percentage of profit after tax of the Indian companies.