What is the Role of Passbook in Linking Bank Account with Demat & Trading Account?

When opening a Demat or trading account in India, linking a bank account is not optional, it is a regulatory requirement. The bank account serves as the channel through which funds move in and out of the trading account, and every SEBI-registered broker must verify that the bank account belongs to the applicant before activating any transaction capability. The bank passbook plays a specific and well-defined role in this verification process. This article explains the role of the passbook in bank account linking demat account procedures, what information it provides, how it is used alongside other documents, and what alternatives exist.

Why is Bank Account Linking Demat Account Mandatory?

SEBI regulations require every investor opening a Demat or trading account to link an active bank account. This requirement exists for several reasons:
 

• All funds for purchasing securities must come from a verified bank account in the investor’s name.
• Proceeds from selling securities are credited directly to the linked bank account.
• The bank linkage creates a clear audit trail connecting every market transaction to an identified individual.
• It prevents the use of third-party funds, reducing the risk of fraudulent or unauthorised transactions in securities markets.

Linking bank account to broker account is therefore not a formality. It is a foundational compliance step that brokers and depositories are required to complete before granting transaction access to any investor.

What Information Does a Passbook Contain for Verification?

A bank passbook is a physical booklet issued by the bank that serves as an official record of account activity. It is governed by Reserve Bank of India regulations and contains specific details that make it useful as a verification document for bank account linking demat account purposes.
 

The first page of a passbook typically contains:

The name match between the passbook, PAN card, and other KYC documents is particularly important. A mismatch as minor as “Suresh Kumar” on one document and “S. Kumar” on another can result in the application being rejected and the process needing to restart.
 

Also Read: How to Transfer Money From Demat account to Bank Account

How is the Passbook Used in the KYC Process for Demat Accounts?

KYC, which stands for Know Your Customer, is a regulatory requirement made compulsory by SEBI which every investor has to go through before they can have his Demat account opened. KYC is carried out to ensure that the identification and address of the individual applying for the Demat account are genuine.

For the bank account verification step within KYC, the applicant is required to submit one of the following:
 

• A photograph of the first page of their bank passbook
• A cancelled cheque from the linked bank account
• A recent bank account statement (typically not older than three months)

The first page of the passbook is a commonly submitted document for this purpose. It provides the broker or Depository Participant (DP) with the account number, IFSC code, and name of the account holder in a single, clearly structured document. This information is then used to verify and activate the bank account linking demat account connection.
 

In terms of eKYC based on Aadhaar, the whole process is relatively quick. In case your Aadhaar is associated with your registered mobile number, then you can verify your identification and address through the use of one-time password (OTP). However, the proof of your bank account like canceled cheque, passbook, and bank statement is needed for the bank linking step.

What is the Role of Passbook When Linking Bank Account to Broker Account?

When an investor opens a trading account with a SEBI-registered broker alongside their Demat account, the same bank verification process applies. Linking bank account to broker account is essential because:
 

• The trading account holds no funds of its own, all buy orders are funded directly from the linked bank account via ASBA or fund transfer mechanisms.
• It is necessary for the broker to ensure that the account from which money will be withdrawn is verified, operational, and belongs to the investor.
• As per SEBI guidelines, brokers are required to keep a record of bank accounts of their clients.
   

The passbook supports this process in the same way it does for the Demat account. The broker’s onboarding team verifies the account number, IFSC, and name from the passbook photograph submitted during account opening. Once verified, the bank account is activated for fund transfers to and from the trading account.

How to Link Bank Account to Demat Account?

Here is the standard process for how to link bank account to demat account during the account opening procedure:

Conclusion

The bank passbook plays a clear and important role in the bank account linking demat account process. Its first page contains exactly the information that brokers and Depository Participants need to verify that the bank account is active, belongs to the applicant, and is correctly identified through its account number and IFSC code. No matter whether it is KYC that is physical or electronic Aadhaar-based, the passport photo of the first page of your passbook is always one of the accepted documents to get your bank account verified. It is essential for you to be aware of how to link bank account to demat account, the documents that need to be submitted in both cases, and so on.
 

Disclaimer: The information contained in this article is intended solely for educational and informational purposes.