SPAN and Exposure Margins: An Introduction

    Summary:


    SPAN margin as well as Exposure margin act as safety margins for the various stock exchanges around the world. This helps to curb the risks associated with trading. SPAN margin helps measure the loss that can be incurred due to market movements. An Exposure margin is another margin added to handle abrupt market variations.

    SPAN and Exposure margins are safety deposits collected by stock exchanges. They protect the market from losses when traders take positions in futures and options contracts.

    The SPAN margin is determined through risk models. The metric indicates the possible trade loss in a particular market scenario. The SPAN margin is essential in managing abrupt market prices.

    Exposure margin is an extra margin over the SPAN margin. It is in addition to the SPAN margin and helps offset risks associated with Commex businesses. SPAN and Exposures ensure that the risk of fluctuations in the marketplace is minimised.

    What is SPAN Margin?

    SPAN margin is the basic margin collected by stock exchanges for futures and options trading. It is designed to cover the possible loss from price changes in the market. It is calculated using a risk-based model.

    This margin checks how a position may perform under different market situations, including price rise, fall, or volatility changes. It changes daily based on market conditions. Higher risk means higher SPAN margin and helps ensure traders keep enough funds to manage possible losses.

    What is Exposure Margin?

    Exposure margin is an extra margin charged in addition to SPAN margin. It acts as a safety buffer to protect against sudden and extreme market movements. This margin is usually a fixed percentage of the trade value.

    It helps cover risks that SPAN margin may not fully capture during sharp price swings. Exposure margin ensures traders maintain additional funds. It strengthens market safety and protects exchanges and investors during highly volatile trading sessions.

    SPAN Margin vs Exposure Margin: Key Differences

    Factor

    SPAN Margin

    Exposure Margin

    Purpose

    Covers potential loss from normal market movements.

    Covers extra risk from sudden or extreme price changes.

    Calculation Method

    Calculated using a risk-based model.

    Calculated as a fixed percentage of trade value.

    Risk Coverage

    Handles expected market volatility.

    Handles unexpected or sharp market moves.

    Nature

    Variable and changes with market conditions.

    Mostly fixed and added on top of SPAN margin.

    Applicability

    Mandatory for futures and options trades.

    Mandatory along with SPAN margin for extra safety.

    Goal

    Manages regular trading risk.

    Provides additional market protection.

    How to Calculate SPAN and Exposure Margins

    SPAN and Exposure margins are calculated to manage risk in futures and options trading. SPAN margin is calculated by stock exchanges using a risk-based model.

    It checks the possible loss of a position under different market conditions, such as price rise, fall, or volatility change. Traders do not calculate SPAN margin manually. It is shown by the trading platform.

    Exposure margin is easier to understand. It is calculated as a fixed percentage of the total contract value. In simple terms, exposure margin equals a set percentage multiplied by the lot size and the current market price of the contract.

    This extra margin acts as a safety buffer against sudden market movements and sharp price changes.

    Exposure Margin = % x Lot Size x Market Price of the contract

    You can use online margin calculators to get an estimated margin requirement. However, remember that margin requirements may change if SEBI or exchanges revise the percentages or calculation methodology. Keeping track of your SPAN and exposure margin can help you avoid penalties and forced square-offs due to insufficient funds.

    Share this article: 

    Frequently Ask Questions

    Published Date : 31 May 2025

    Disclaimer :

    Investments in the securities market are subject to market risk, read all related documents carefully before investing. This content is for educational purposes only. Securities quoted are exemplary and not recommendatory.


    The information on this website is provided on "AS IS" basis. Bajaj Broking (BFSL) does not warrant the accuracy of the information given herein, either expressly or impliedly, for any particular purpose and expressly disclaims any warranties of merchantability or suitability for any particular purpose. While BFSL strives to ensure accuracy, it does not guarantee the completeness, reliability, or timeliness of the information. Users are advised to independently verify details and stay updated with any changes. The securities are quoted as an example and not as a recommendation. Past performance is not necessarily a guide to future performance.

    The information provided on this website is for general informational purposes only and is subject to change without prior notice. BFSL shall not be responsible for any consequences arising from reliance on the information provided herein and shall not be held responsible for all or any actions that may subsequently result in any loss, damage and or liability. Interest rates, fees, and charges etc., are revised from time to time, for the latest details please refer to our Pricing page.

    Neither the information, nor any opinion contained in this website constitutes a solicitation or offer by BFSL or its affiliates to buy or sell any securities, futures, options or other financial instruments or provide any investment advice or service.

    BFSL is acting as distributor for non-broking products/ services such as IPO, Mutual Fund, Insurance, PMS, and NPS. These are not Exchange Traded Products. For more details on risk factors, terms and conditions please read the sales brochure carefully before investing.



    Content Partner - Dalal Street Investment Journal Wealth Advisory Private Limited



    This article is for educational purposes only and should not be considered investment advice. Market investments are subject to risks. DSIJ Wealth Advisory Private Limited is a SEBI-registered Research Analyst (Reg. No: INH000006396) and Investment Adviser (Reg. No: INA000001142). Please consult your financial adviser before investing. 

    For more disclaimer, check here : https://www.bajajbroking.in/disclaimer

    Read More Blogs

    Our Secure Trading Platforms

    Level up your stock market experience: Download the Bajaj Broking App for effortless investing and trading

    QR code to download Bajaj Broking App

    9 lakh+ Users

    icon-with-text

    4.9 App Rating

    icon-with-text

    4 Languages

    icon-with-text

    ₹7,300 Cr+ MTF Book

    icon-with-text
    banner-icon

    Open Your Free Demat Account

    Enjoy low brokerage on delivery trades

    +91

    |

    Open Your Free Demat Account

    Enjoy low brokerage on delivery trades

    +91

    |