What is a SPAN Margin Calculator?
A SPAN Margin Calculator is a free online tool that helps you calculate span and exposure margin required for nifty, bank nifty, and stock f&o positions on nse. FinCalc Pro offers India's most accurate SPAN Margin Calculator with instant results, detailed charts, and step-by-step breakdowns — completely free with no login required.
SPAN Margin Calculator Formula
SPAN (Standard Portfolio Analysis of Risk) uses a scenario-based approach to calculate margin. Exposure margin is an additional safety margin. Combined, they represent the total margin required to initiate an F&O position.
How to Use SPAN Margin Calculator
- Select the underlying (Nifty, Bank Nifty, stock name)
- Select contract type (futures or options)
- For options: select call or put and strike price
- Enter number of lots
- Click Calculate to see approximate SPAN, exposure, and total margin required
SPAN Margin Calculator — Example
Nifty 22000 Futures | 1 lot (50 units) | Contract Value: ₹11L | SPAN: ~₹90,000 | Exposure: ~₹55,000 | Total Margin: ~₹1,45,000
Benefits of Using SPAN Margin Calculator
- Know margin requirement before placing F&O orders
- Plan capital allocation across multiple F&O positions
- Understand margin differences between futures and options selling
- Avoid margin call situations by pre-checking requirements
Frequently Asked Questions — SPAN Margin Calculator
What is SPAN margin?
SPAN (Standard Portfolio Analysis of Risk) is a risk-based margin calculation system used by exchanges worldwide. It calculates the maximum possible loss on a portfolio over a single trading day under worst-case scenarios across 16 price/volatility scenarios. NSE and BSE use VSPAN.
What is exposure margin?
Exposure margin is an additional margin levied over SPAN margin to account for mark-to-market losses and extreme market movements. For equity futures, NSE charges 3% of the contract value as exposure margin. For options, it varies by moneyness.
What happens if my account falls below margin?
If your account falls below the required margin, your broker sends a margin call — you must add funds or your positions will be squared off (auto-closed). Brokers like Zerodha auto-square off positions at 40-50% of margin utilization to protect against losses.