The BRSR is the full report; BRSR Core is the numeric part of it that a third party must check, and from FY 2026-27 that applies to all top 1,000 listed companies. A side-by-side comparison, then each of the nine Core attributes: what it measures, how the intensity ratios work and who owns the number.
From FY 2026-27 the assessment-or-assurance requirement on BRSR Core reaches the top 1,000 listed entities, doubling the population in one step. The FY 2025-26 filing season now closing shows what the first 500 got right and wrong. Here is what a reporting team in the 501-to-1,000 band needs to have in place before April, with the circular references.
For FY 2026-27, the BRSR and the BRSR Core check apply to the same top 1,000 listed companies for the first time. Value chain disclosure stays voluntary. A layer-by-layer applicability test, with the LODR regulation and the SEBI master circular paragraphs to cite in a board note.
Between 1 and 18 September 2026 at least six large listed entities filed stock exchange intimations about ESG ratings they never commissioned. What Regulation 30 requires, how to draft the one-page intimation, and what to tell the board before the AGM.
