Nifty lot size is 65, Bank Nifty lot size is 30 and Sensex lot size is 20 (last checked 11 Nov 2026). This page lists the F&O lot size of every NSE and BSE index with the circular behind it, the full lot size history, and a calculator for the value of one lot.
Index and price
Result
- Lot size (units)
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- Value of one lot (₹)
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- Lots your capital covers
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- Units in those lots
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- Capital left over (₹)
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Quick Answers
- How do you work out the value of one Nifty option lot?
- Value of one lot = option premium × lot size. With a premium of 100 and a lot of 65 units, one lot costs 6,500, before charges.
- Where are index lot sizes announced?
- NSE announces lot size changes for its indices by F&O circular, and BSE does the same for Sensex by notice. The last NSE revision, circular of 3 Oct 2025, moved the Nifty lot from 75 to 65.
Nifty, Bank Nifty and Sensex Lot Size Today
Nifty 50 lot size is 65, Bank Nifty lot size is 30 and Sensex lot size is 20. Fin Nifty is 60, Nifty Midcap Select is 120 and Nifty Next 50 is 25. The same lot size applies to the futures and the options of an index.
| Index | Exchange | Lot size | Since |
|---|---|---|---|
| Nifty 50 | NSE | 65 | Weekly contracts from 6 Jan 2026, monthly from 27 Jan 2026 (NSE circular NSE/FAOP/70616, 3 Oct 2025) |
| Bank Nifty | NSE | 30 | Monthly contracts from 27 Jan 2026 (NSE circular NSE/FAOP/70616, 3 Oct 2025) |
| Sensex | BSE | 20 | Since the revision of November 2024 (BSE notice 20241021-13) |
| Nifty Financial Services (Fin Nifty) | NSE | 60 | Monthly contracts from 27 Jan 2026 (NSE circular NSE/FAOP/70616, 3 Oct 2025) |
| Nifty Midcap Select | NSE | 120 | Monthly contracts from 27 Jan 2026 (NSE circular NSE/FAOP/70616, 3 Oct 2025) |
| Nifty Next 50 | NSE | 25 | Unchanged since the revision of November 2024 (NSE circular NSE/FAOP/64625, 18 Oct 2024) |
Announced Lot Size Change
Sensex: lot size 20 → 25, January 2027 expiry onwards; November and December 2026 expiries stay at 20 (BSE notice 20260930-58 (30 Sep 2026)).
Lot Size History
Exchanges revise index lot sizes so that one contract stays within the contract value band set by SEBI. The changes since November 2024 are listed below, newest first, each with the NSE circular that announced it.
| Index | Old lot | New lot | Circular | Applies from |
|---|---|---|---|---|
| Nifty 50 | 75 | 65 | NSE/FAOP/70616 (3 Oct 2025) | Weekly from 6 Jan 2026, monthly from 27 Jan 2026 |
| Bank Nifty | 35 | 30 | NSE/FAOP/70616 (3 Oct 2025) | Monthly from 27 Jan 2026 |
| Fin Nifty | 65 | 60 | NSE/FAOP/70616 (3 Oct 2025) | Monthly from 27 Jan 2026 |
| Nifty Midcap Select | 140 | 120 | NSE/FAOP/70616 (3 Oct 2025) | Monthly from 27 Jan 2026 |
| Bank Nifty | 30 | 35 | NSE/FAOP/67372 (28 Mar 2025) | Monthly contracts from 31 Jul 2025 |
| Nifty Midcap Select | 120 | 140 | NSE/FAOP/67372 (28 Mar 2025) | Monthly contracts from 31 Jul 2025 |
| Nifty 50 | 25 | 75 | NSE/FAOP/64625 (18 Oct 2024) | New contracts from 20 Nov 2024 |
| Bank Nifty | 15 | 30 | NSE/FAOP/64625 (18 Oct 2024) | New contracts from 20 Nov 2024 |
| Fin Nifty | 25 | 65 | NSE/FAOP/64625 (18 Oct 2024) | New contracts from 20 Nov 2024 |
| Nifty Midcap Select | 50 | 120 | NSE/FAOP/64625 (18 Oct 2024) | New contracts from 20 Nov 2024 |
| Nifty Next 50 | 10 | 25 | NSE/FAOP/64625 (18 Oct 2024) | New contracts from 20 Nov 2024 |
How Many Lots Can I Buy?
For option buying, value of one lot = premium × lot size, and the lots your capital covers = FLOOR(capital ÷ value of one lot). For futures, contract value of one lot = futures price × lot size; the margin the exchange asks for is a separate, smaller number and is not on this page.
Example, only to show the arithmetic: a premium of ₹120 on a Nifty option with a lot of 65 costs 120 × 65 = ₹7,800.00 per lot, so ₹50,000 covers FLOOR(50,000 ÷ 7,800.00) = 6 lots.
Where These Numbers Come From
Source: NSE circulars NSE/FAOP/64625, NSE/FAOP/67372 and NSE/FAOP/70616, and BSE notices for Sensex. Last checked 11 Nov 2026. Lot sizes change by circular; check the circular for the contract month you trade.
This page states contract facts and arithmetic only. It is not investment advice of any kind.
Related pages
Frequently Asked Questions
What is the Nifty lot size now?
65 units, for both Nifty futures and Nifty options, as of 11 Nov 2026. It changed from 75 to 65 with the NSE circular of 3 Oct 2025, for weekly contracts from 6 Jan 2026 and monthly contracts from 27 Jan 2026.
What is the Bank Nifty lot size now?
30 units, as of 11 Nov 2026. It moved from 35 back to 30 with the same NSE circular of 3 Oct 2025, for monthly contracts from 27 Jan 2026.
What is the Sensex lot size?
20 units for the November and December 2026 expiries. BSE notice 20260930-58 announced a change to 25 from the January 2027 expiry.
Why do lot sizes change?
SEBI sets a band for the value of one index derivative contract. When index levels move, the exchanges revise lot sizes so that one lot stays inside that band. NSE reviews lot sizes periodically and announces every change by circular.
Is the lot size the same for futures and options?
Yes. For an index, the futures and the options trade in the same lot size.
Are the numbers I enter sent anywhere?
No. The arithmetic happens in your browser. No number goes to any server and nothing is saved.