Facts that change
Core about 5 min
| Fact | Value | As of | Source |
|---|---|---|---|
| Nifty 50 constituents used | 50 stocks incl. BSE, TMPV, JIOFIN, ETERNAL | 6 Nov 2026 | NSE ind_nifty50list.csv |
| Nifty option lot size | 65 units | 28 Oct–3 Nov 2026 | NSE F&O bhavcopy, NewBrdLotQty |
| TCS option lot size | 225 shares (175 in April 2026 and earlier) | 8 Oct 2026 | NSE F&O bhavcopy |
| Nifty weekly expiry day | Tuesday (previous trading day if a holiday) | 3 Nov 2026 | NSE F&O bhavcopy XpryDt; M09A · 9A.2 |
| STT: delivery / intraday / options sold / options exercised | 0.1% each side / 0.025% sell / 0.15% of premium / 0.15% of intrinsic value | from 1 Apr 2026 | Finance Act 2026 amendment to the Finance (No. 2) Act, 2004; M01 · 1.7 |
| Stamp duty: delivery / intraday / options (buy side) | 0.015% / 0.003% / 0.003% | 6 Nov 2026 | Indian Stamp Act as amended (2020); M01 · 1.7 |
| NSE transaction charges: equity / options | 0.00307% of turnover / 0.03553% of premium | 6 Nov 2026 | M01 · 1.7 |
| SEBI turnover fee; GST | ₹10 per crore; 18% | 6 Nov 2026 | SEBI; M01 · 1.7 |
| Brokerage used in examples | illustrative: ₹20 or 0.03% per order, whichever is lower | — | assumption; set your own |
| Extra exposure margin on short index options on expiry day | 2% of notional | from 20 Nov 2024 | SEBI circular of 1 Oct 2024 |
| Short-term capital gains tax on listed equity | 20% | transfers from 23 Jul 2024 | Finance (No. 2) Act 2024; M01 · 1.8 |
| Closing auction session for F&O stocks | live from 3 Aug 2026 | 6 Nov 2026 | SEBI circular of 16 Jan 2026; M01 · 1.2 |
| RBI repo rate (used as in 15.4) | 5.50% | 7 Oct 2026 | RBI; M09A · 9A.16.2 |
| Yahoo 5-minute history available | about 60 days (from 12 Aug 2026 on 6 Nov 2026) | 6 Nov 2026 | yfinance download |