India’s Department of Economic Affairs published the draft Climate Finance Taxonomy in May 2025 — covering power, mobility, buildings, agriculture, and for the first time, hard-to-abate sectors including iron, steel, aluminium, and cement as transition activities. The taxonomy creates a two-tier structure: Tier 1 for directly green activities (renewable energy, clean transport) and Tier 2 for activities that reduce emissions intensity in sectors where zero-carbon alternatives are not yet commercially viable. For industrial companies, taxonomy alignment unlocks access to green bonds, transition bonds, and sustainability-linked loans at financing cost savings of approximately 20 to 80 basis points versus conventional debt. On a Rs 500 crore project, 50 basis points of greenium over a 12-year project life equals approximately Rs 30 crore in cumulative interest saving. The taxonomy’s Technical Screening Criteria — which have not yet been finalised in sectoral annexures — will determine whether specific investments in EAF steelmaking, aluminium smelter RE transition, green ammonia, and waste heat recovery qualify for green or transition finance labelling. This article maps what is already clear, what remains open, and what industrial CFOs should be doing right now to position their CCTS-verified GEI data as taxonomy eligibility evidence.