What is CSR-1 Registration? Understanding CSR in India Corporate Social Responsibility, or CSR, was made mandatory for certain companies under Section 135 of the Companies Act, 2013. Companies with a net worth of ₹500 crore or more, turnover of ₹1,000 crore or more, or net profit of ₹5 crore or more must spend 2% of their average net profits over the past 3 years on CSR activities. ... https://www.psrcompliance.com/csr-1-registration