Companies' CSR rules updated: definitions, implementing entity registration, 5% admin cap, surplus treatment and detailed reporting. The rules amend CSR governance by defining key terms, capping administrative overheads at five percent of CSR spend, mandating registration of implementing entities via Form CSR 1, permitting engagement of specified implementing agencies and international organisations, requiring Board certification and monitoring of projects (including ongoing projects), prescribing treatment of CSR surpluses and set off of excess spends, restricting holding of CSR funded capital assets to permitted entities or beneficiaries, and mandating detailed annual CSR reporting through Annexure II plus website disclosure and impact assessment thresholds.