STT Hike on Futures - The cost per lot of BankNifty futures has increased from “₹312 to ₹780 per lot” but what does this really mean? Many people saw headlines saying: 👉 Bank Nifty futures cost per lot jumps from ₹312 to ~₹780 👉 That’s a ~150% rise in transaction cost Let’s break this down simply👇 🔍 What is STT in futures trading? - STT (Securities Transaction Tax) is a tax charged by the government on trading in derivatives. - In futures, it is applied on the sell side based on the contract value. - So whenever you exit a futures position, you pay STT - irrespective of profit or loss. 📈Why did Bank Nifty cost per lot rise so sharply? Because: - 1️⃣The STT rate on futures was increased. - 2️⃣Bank Nifty contracts are large-value contracts → even a small % hike in tax translates into big rupee numbers per lot. Earlier, roughly: - ➡️ STT per Bank Nifty lot ≈ ₹312 After the hike: - ➡️ STT per lot ≈ ₹780 That’s an increase of about ₹468 per trade on exit. 🧮How is this a 150% jump? Increase = ₹780 − ₹312 = ₹468 ₹468 ÷ ₹312 ≈ 150% So traders now pay 2.5x the earlier STT for the same Bank Nifty futures trade. ⚖️Why does NSE worry about this? Higher trading cost can mean: - Less intraday & short-term trading - Lower liquidity - Wider bid-ask spreads - Reduced participation from retail & prop desks That’s why NSE has reportedly asked the government to review the hike. 🎯 Big Picture - Higher STT can discourage excessive speculation. - But too much cost can hurt market depth and efficiency - especially in heavily traded contracts like Bank Nifty.