Calcutta HC Graphite India Ruling (April 21, 2026): Section 80-IA Captive Power Must Include Electricity Duty and Sales Tax Remission is Capital

Calcutta HC ruling of April 21, 2026 in M/s Graphite India Ltd (ITA 407 of 2008): Section 80-IA deduction uses full State Board tariff with electricity duty; West Bengal sales tax remission is capital receipt. Practical guide for CAs.