NSE Option Lot Size Calculator

Select index (Nifty, Bank Nifty, etc.) to see standard lot size, contract value and capital needed for different quantities.

Calculator Inputs

Standard Lot Mode

Select Index / Contract

Or Custom Lot Size: Override standard lot

Qty

Available Capital (₹) Free Margin Balance

₹

Option Premium (₹) ⓘ

LTP per unit

₹

Capital Allocation & Lot Breakdown

Real-time allocation breakdown & contract sensitivity

Max Lots You Can Buy

13 Lots (325 Total Units)

Total Capital Required ₹48,750.00

Allocated Capital: ₹48,750.00 (97.5%) Idle Cushion: ₹1,250.00 (2.5%)

₹0 (0%) 50% Threshold ₹50,000 Total Capital

Contract Unit Cost ₹3,750.00 1 Lot Base Margin

Capital Utilization 97.5% High Efficiency

Break-even Premium +₹150.00 Move Required

1-Tick P&L Delta ±₹16.25 Per ₹0.05 move

Total Purchase Power Unlocked

325 Total Units across 13 standardized contracts

NSE Regulated

Primary Results

Max Lots You Can Buy

13 Lots

Total Qty: 325 Qty

Cost Per 1 Lot

₹3,750.00

Multiplier: 25 × ₹150.00

Total Capital Required

₹48,750.00

Execution Cost: 13 × ₹3,750

Leftover Capital

₹1,250.00

Unallocated Cushion: +2.50%

Derivatives Index Contract Specifications Matrix

SEBI normalized lot sizes, contract values, and tick delta comparison

Exchange Live Tier: NSE & BSE

Index / Underwriting	Exchange	Standard Lot Size	Min Premium Capital (1 Lot @ ₹150.00)	Max Lots You Can Buy	Tick Size	Approx Contract Value	Margin Treatment
Nifty 50	NSE	25 units	₹3,750.00	13 Lots (325 Units)	₹0.05	~₹5.75 Lakhs	100% Premium Paid
Bank Nifty	NSE	15 units	₹2,250.00	22 Lots (330 Units)	₹0.05	~₹7.30 Lakhs	100% Premium Paid
Fin Nifty (Nifty Financial Services)	NSE	40 units	₹6,000.00	8 Lots (320 Units)	₹0.05	~₹9.20 Lakhs	100% Premium Paid
Midcap Nifty (Nifty Midselect)	NSE	75 units	₹11,250.00	4 Lots (300 Units)	₹0.05	~₹9.80 Lakhs	100% Premium Paid
BSE Sensex	BSE	10 units	₹1,500.00	33 Lots (330 Units)	₹0.05	~₹8.05 Lakhs	100% Premium Paid
BSE Bankex	BSE	15 units	₹2,250.00	22 Lots (330 Units)	₹0.05	~₹8.25 Lakhs	100% Premium Paid

Indian F&O Lot Sizes & Exchange Contract Specifications

NSE and BSE periodically revise contract lot sizes for index derivatives (Nifty, Bank Nifty, FinNifty, Midcap Nifty, Sensex) and stock options to keep contract notional values within regulatory bands.

Current Index Lot Sizes

• Nifty 50: 25 units per lot
• Bank Nifty: 15 units per lot
• Fin Nifty: 40 units per lot
• Midcap Nifty: 75 units per lot
• Sensex (BSE): 10 units per lot
• Bankex (BSE): 15 units per lot

The Formula

Exact Algorithm

Cost per Lot = Premium Price × Lot Size
      Max Lots = Floor(Available Capital ÷ Cost per Lot)
      Total Quantity = Max Lots × Lot Size
      Total Capital Required = Max Lots × Cost per Lot
      Leftover Capital = Available Capital - Total Capital Required

Computed strictly via integer floor arithmetic to eliminate margin overshoot.

SEBI Regulated Platforms

Trade With SEBI-Registered Indian Stock & F&O Brokers

Execute index and stock option contracts with brokers offering multi-leg strategy builders, zero brokerage on account opening, and low slippage.

Market Leader

star 4.8

Zerodha

Pioneer Kite UI • Zero AMC for BSDA

Brokerage: ₹20 flat / trade

Delivery: ₹0 Brokerage

Intraday / F&O: Flat ₹20

Account Opening: ₹0 (Free)

Sensibull F&O: 100% Free Access

Code: CALCZERODHA Open Account

Superfast Scalping

star 4.8

Dhan

Direct TradingView Trading • Free Webhooks

Delivery: ₹0 Brokerage

Intraday / F&O: Flat ₹20

TV Direct Trade: Free tv.dhan.co

TradingView Webhooks: Free Unlimited

Trading APIs: Free Unlimited

TradingView: Free Native

Webhook Trading: Enabled Free

Code: CALCDHAN Open Account

Fastest Growing

star 4.7

Groww

Zero Account Opening • 0% MF Commission

Brokerage: ₹20 flat / trade

Delivery: ₹20 or 0.05%

Annual AMC: ₹0 Forever

Intraday / F&O: Flat ₹20

Account Opening: ₹0

Direct Mutual Funds: 0% Commission

Code: CALCGROWW Open Account

Full Service Tech

star 4.6

Angel One

SmartAPI Trading • ARQ Prime Robo Advisory

Promo: Zero Fee (30 Days)

Delivery: ₹0 Brokerage

Intraday / F&O: Flat ₹20

Intraday: ₹20 or 0.25%

SmartAPI: Free Lifetime

Code: CALCANGEL Open Account

Advanced Charting

star 4.6

Upstox

Upstox Pro • TradingView & ChartIQ

Brokerage: ₹20 flat / trade

Delivery: ₹20 or 2.5%

Margin Pledge: Instant e-DIS

Intraday / F&O: Flat ₹20

Stock Delivery: ₹20 or 0.05%

GTT Validity: 365 Days

Code: CALCUPSTOX Open Account

Verified

star 4.8

Bybit

Maker / Taker: 0.02% / 0.055%

Welcome Bonus: Up to $600

Grid Bots: Free Pre-Sets

Promo Code: BYBIT$600 Sign Up

info Transparency Disclosure: Some links above may be referral links. We may earn a commission if you open an account through these partner links at no additional cost to you. Platform terms apply.

Frequently Asked Questions — Index Lot Sizes & Capital

Everything you need to know about contract multipliers and margin allocation in India

Why did SEBI revise index derivative lot sizes recently?

▼

SEBI mandates that the minimum contract value of index futures and options contracts must generally range between ₹5 Lakhs and ₹15 Lakhs. As underlying indices like Nifty and BankNifty appreciate, exchanges adjust lot sizes downward (e.g., Nifty from 50 to 25, BankNifty to 15) to maintain the target contract value and prevent excessive margin exposure for retail participants.

Can I buy fractional lots or odd-lot option quantities in India?

▼

No. In Indian exchange-traded derivatives (NSE & BSE), orders can strictly only be placed in integer multiples of the standardized lot size. For instance, in Nifty 50, you can execute orders for 25, 50, 75, or 100 units, but not for 30 or 40 units.

What is the difference between buying options (premium capital) vs selling options (SPAN + Exposure)?

▼

This calculator is built for Option Buyers (Long Call/Put), where maximum loss is limited to the premium paid (Lot Size × Premium). For Option Sellers (Writers), brokers require Exchange SPAN + Exposure margin (typically ₹70,000 to ₹1,50,000 per lot depending on index volatility), which can be partially covered using pledged collateral.

What happens if I hold deep in-the-money (ITM) index options until weekly/monthly expiry?

▼

Indian Index options (Nifty, BankNifty, Sensex) are cash-settled against the official volume-weighted average price (VWAP) between 3:00 PM and 3:30 PM on expiry day. Unlike stock options, there is no physical delivery obligation for index contracts.

Companion Calculators & Workflow Tools

Traders executing with the Nifty & BankNifty Lot Size Calculator routinely pair these verified calculation engines to audit risk, transaction friction, and position expectancy.