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What is Client ID in Demat Account?

  • Calender12 Dec 2025
  • user By: BlinkX Research Team
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  • The Client ID is a unique number assigned by the Depository Participant (DP). It is a crucial component of a Demat account, ensuring easier account management and accurate tracking of transactions. Understanding the function of Client ID is crucial for managing and safeguarding Demat account efficiently. In this blog, we will explore everything about what is client ID in Demat account. 

    Key Characteristics of a Client ID 

    A client ID means a unique code that identifies an investor’s Demat account in the depository system. Here are some of the key characteristics of a client ID. 

    • Format: The client ID is an eight-digit numeric code. It works alongside the DP ID (Depository Participant ID), which is also an eight-digit number. The DP ID identifies the broker or bank, whilst the client ID identifies the specific investor within that broker's system. Together, these two codes form the complete Demat account number. 
    • Purpose: The client ID uniquely identifies an investor's Demat account in the depository system. It ensures that all holdings and transactions are correctly attributed to the specific account holder. 
    • Assignment: The DP (broker or bank) assigns the client ID using its internal system. Each depository participant maintains its own numbering structure for client identification. 
    • Part of the Demat Number: The client ID forms the last eight digits of the 16-digit Demat account number. For example, if the Demat account number is 1234567890123456, the Client ID is 90123456 and the DP ID is 12345678. 
    • Functionality: The client ID helps investors track their portfolio efficiently. It enables them to log in to trading platforms and place or monitor trades. The system uses this identifier to maintain accurate records of all investment activities. 

    Table of Content

    1. Key Characteristics of a Client ID 
    2. How to Find Client ID in Demat Account 
    3. Difference Between a Client ID and a DP ID in a Demat Account 
    4. Why Client ID is Important for Investors 
    5. Common Mistakes While Checking Client ID 
    6. Conclusion 

    How to Find Client ID in Demat Account 

    Investors can locate their client ID through multiple sources. 

    • Broker App: Most broker applications display the client ID in the account details or profile section. Investors need to log in and navigate to the account information page. The client ID appears alongside other account credentials. 
    • CAS Statement: The Consolidated Account Statement (CAS) contains the client ID at the top of the document. NSDL or CDSL sends this statement periodically to investors. The statement lists all holdings and transactions linked to the Demat account. 
    • Welcome Email: When an investor opens a Demat account, the broker sends a welcome email or letter. This communication includes the Demat account details, including the client ID. Investors should retain this document for future reference. 
    • Physical Statements (if applicable): Physical Demat account statements also display the client ID prominently. These statements arrive periodically from the depository. Investors can refer to any recent statement to find their identifier. 
    • Demat Account Number: The client ID forms the last eight digits of the 16-digit Demat account number. Investors can extract their client ID by noting these final eight digits from their complete account number. 

    Difference Between a Client ID and a DP ID in a Demat Account 

    There are several differences between a client ID and a DP ID. The following table highlights the key ones based on different parameters. 

    Parameter 

    DP ID 

    Client ID 

    Definition Special identification number for each Depository Participant (DP). Special identification code for a person or business with a Demat account. 
    Purpose Helps locate the DP associated with the investor's Demat account. Facilitates identification of the owner of a Demat account and links it to their trading account. 
    Holder Assigned to Depository Participants (DPs) who act as intermediaries between investors and the depository. Assigned to individuals or businesses with a Demat account under a DP. 
    Function Identifies the specific DP where the investor holds their Demat account. Identifies the owner of a Demat account and associates it with their trading activities. 
    Usage Associated with a particular investor's Demat account. Used during buying or selling securities. 
    Significance Critical for communication between the investors and their DP. Essential for maintaining a clear record of a Demat account holder's transactions. 
    For Example If the Demat account number is 1234567890123456, then the DP is 12345678 (starting digits of Demat account) If the Demat account number is 1234567890123456, then the client ID is 90123456 (the last digits of Demat account)  

     

    Why Client ID is Important for Investors 

    The client ID plays a vital role in investment management. 

    • Essential for Transactions: The client ID is required for executing all buy and sell orders. It ensures that securities are correctly credited or debited from the appropriate Demat account. Every transaction gets linked to this unique identifier. 
    • Verification Purposes: Brokers and depositories use the client ID for account verification. It helps authenticate the investor's identity during various processes. This identifier serves as a primary reference point in all communications. 
    • Reconciling Holdings: The client ID enables accurate reconciliation of investment holdings. It allows investors to track their stocks, mutual funds, bonds, and other securities. The depository system maintains precise records using this identifier. 
    • Resolving Issues with Support: When investors contact customer support, the client ID helps expedite issue resolution. Support teams can quickly locate the specific account and transaction history. This identifier streamlines the problem-solving process. 

    Common Mistakes While Checking Client ID 

    Investors sometimes make errors when locating their client ID in Demat account. 

    • Confusing It with the DP ID: Many investors mistake the DP ID for the client ID. The DP ID represents the first eight digits of the Demat account number, whilst the Client ID forms the last eight digits. Both identifiers serve different purposes in the depository system. 
    • Using the Trading ID Instead: Some investors confuse their trading ID with the client ID. The trading ID is used for executing trades on the exchange. The client ID, however, relates specifically to the Demat account holdings. These are distinct identifiers with separate functions. 
    • Checking Only the Last Eight Digits Incorrectly: Investors may note down the wrong sequence of digits from their Demat account number. The client ID must be extracted precisely from the last eight positions. Any error in this extraction leads to incorrect identification. 

    Conclusion 

    The client ID serves as a fundamental component of Demat account management. It enables investors to execute transactions, verify their identity, and track holdings accurately. Understanding how to locate and use the client ID ensures smooth investment operations. Investors can access this identifier through broker apps, statements, or account numbers. With the correct knowledge, managing securities through a stock market trading app becomes more efficient. Keeping the client ID secure remains essential for protecting investment accounts.