Besides, contribution towards the Prime Minister's relief fund saw the maximum increase (418 per cent) to Rs 701 crore in the last financial year to Rs 168 crore in 2014-15, according to a report by Prime Database.
CSR law, which came into force in April 2014, mandates companies to invest two per cent of their net profit in CSR projects.
The report said a total of 920 companies listed on NSE spent a total of Rs 8,345 crore towards CSR activities in 2015-16, higher than 895 companies that collectively spent Rs 6,526 crore in the preceding fiscal.
Education received the maximum amount (Rs 2,042 crore) followed by healthcare (Rs 1,638 crore), and a huge Rs 1,782 crore was made under 'other matters'.
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In terms of absolute CSR spend, Reliance Industries emerged as the top company, having spent over Rs 651 crore, followed by state-owned NTPC (Rs 492 crore), ONGC (about Rs 409 crore, Tata Consultancy Services (over Rs 294 crore) and ITC (Rs 247.50 crore).
PSU spending climbed 41 per cent from the previous year. On an overall basis, 48 PSUs spent Rs 2,078 crore in 2014-15. This went up to Rs 2,936 crore by 47 PSUs in 2015-16, Prime Database MD Pranav Haldea said.
State-wise, the combined Andhra Pradesh and Telangana received funds to the tune of Rs 630 crore towards CSR, followed by Maharashtra (Rs 529.50 crore), Gujarat (Rs 494 crore), Rajasthan (Rs 467 crore) and Tamil Nadu (Rs 414 crore).