When you open your Demat account a BO ID or Beneficiary Owner Identification number is assigned to your Demat account.
BO ID is a 16-digit unique identification number issued by your stockbroker or Depository Participant (DP) like Zerodha to identify your Demat account. BO ID serves as an essential record of your stock holdings and enables you to buy and sell stocks in the stock market.
BO ID with CDSL and NSDL
National Securities Depositories Ltd (NSDL) and Central Securities Depositories Ltd (CDSL) are two security depositories in India. Both the depositories hold your financial securities, like shares and bonds, and facilitate trading in stock exchanges.
Your stockbroker or DP is either registered with CDSL or NSDL like Zerodha is registered with CDSL.
If your stockbroker is a member of NSDL then your 16-digit BO ID will start with IN, whereas in the case of CDSL your, BO ID will be a 16-digit number.
For example –
- BO ID with NSDL – IN11223398765432
- BO ID with CDSL – 1122334455667788
The first 8 numbers are your Depository Participant’s DP ID and the last 8 digits are your Demat account number.

You can also go through our article on how to apply for IPO through netbanking. We used HDFC bank as an example but the process is similar for other banks also.
How to Find BO ID
You can find your BO ID under the profile section in your Demat account. I am using Zerodha to show you a step-by-step process to find BO ID –
Step 1 – Log in to your kite Zerodha account using your username and password.

Step 2 – Click on your User Id icon

Step 3 – Choose a profile from the drop-down menu. You will find your BO ID under ‘Demat (BO)”.

You would find your BO ID with any stockbroker following the same process. In case, you couldn’t find the BO ID, contact your Depository Participants (DPs) customer support. To contact Zerodha’s customer support, you require a 4 digit code called “Support code”. We have made a separate guide on what is support code in Zerodha and how to get it to connect with customer support.
You can also read our list of best free demat account with no annual charges.
FAQs
No, an investor cannot transfer their BO ID to another investor. The BO ID remains with the investor for a lifetime.
No, an investor cannot get a BO ID without a PAN card. A PAN card is mandatory to open a Demat account.
BO ID is linked with the stock market as it serves as a unique identification number that enables investors to buy and sell stocks in the stock market.
To link your trading account with your Demat account using BO ID, you need to submit a request to your Depository Participant and complete the necessary formalities.
No, BO ID is not mandatory for investing in mutual funds. However, it is necessary for investing in the stock market.
Yes, an NRI can get a BO ID by opening a Demat account with a Depository Participant in India.
BO ID is a unique identification number assigned to an investor in the Indian stock market, while a PAN card is a unique identification number assigned by the government of India for tax purposes.
Yes, an investor can use their BO ID number for trading with different brokers, provided they have linked their Demat account with the respective brokers.
To update your BO ID details, you need to contact your Depository Participant and submit the necessary documents.
A BO ID number is valid for a lifetime and remains the same, even if an investor changes their Depository Participant.
The format of a BO ID number is 16 digit numeric number. The first 8 number donates the DP ID and last 8 digit is your Demat account number.
BO ID in the unique identification number of your Groww account.
To find your BO ID number in Groww, log in to your account and navigate to the ‘Profile’ section. Here, you will find all the details of your Demat account, including your BO ID number.
BO ID in the unique identification number of your Angel broking account. You can find the BO ID number by logging into your Angel Broking account and navigating to the ‘My Profile’ section.
No, you cannot change your BO ID once it has been assigned to you. It is a unique identification number that remains constant throughout an investor’s trading journey.
No, you cannot open a Demat account without a BO ID. It is a mandatory requirement for opening a Demat account in India.
No, BO ID is not the same as a trading account number. BO ID is a unique identification number assigned to an investor in the Indian stock market, while a trading account number is a unique identification number assigned to an investor’s trading account.
No, an investor can only have one BO ID. It is a unique identification number assigned to an investor when they open a Demat account with a Depository Participant (DP).
BO ID is necessary for investing in the stock market as it serves as a unique identification number that links an investor’s Demat account to their trading account.
Without a BO ID, an investor cannot trade in the stock market or hold shares in Demat form.