Aditya Birla Sun Life AMC Limited

What is a BO ID in a Demat Account?

Aug 30, 2025
10 min
0 Rating

Anyone who has experience investing in shares or mutual funds in India must have a Demat account. A person who has a demat account also has their ID, and that is a BO ID. What does BO ID mean? If you are about to start investing, need to gain some knowledge, or have already invested, read on.

We will cover the BO ID full form, its meaning and importance and everything you need to know.

What is a BO ID?

BO ID expands as Beneficial Owner Identification Number. You get this unique number when you open a Demat account. It will help the organisation or bank to identify you as the rightful owner of the securities, whether it's an equity fund, a debt fund, or individual shares, within your account.

In simple terms, your BO ID is your identity in the world of Demat accounts.

You see, it is just like your mobile number, which helps people reach you. Stock exchanges, brokers, or depositories are able to recognise your holdings via your BO ID.

Without this number, you would not be able to buy, sell, or hold shares in electronic format.

How is BO ID Structured?

The structure will depend on whether your Demat account is with Central Depository Services Limited or National Securities Depository Limited.

Here’s how the structure works:

BO ID under CDSL:

  • It is a 16-digit number.

  • First 8 digits: DP ID (Depository Participant ID)

  • Last 8 digits: Client ID

  • Example: If your DP ID is 12049200 and your Client ID is 01830421, then your BO ID is: 1204920001830421

BO ID under NSDL:

  • It starts with ‘IN’ followed by 14 digits.

  • Example: IN12345678901234

  • This format is entirely numeric after the ‘IN’ prefix.

The comparison between the two is as follows:

Depository

BO ID Format

Example

CDSL

16-digit numeric

1204920001830421

NSDL

IN + 14-digit numeric

IN12345678901234

BO ID vs DP ID

Many new investors often get confused between BO ID and DP ID. Although both are related to your Demat account, they serve different purposes.

DP ID (Depository Participant ID):

  • This is the unique ID given to the broker or depository participant (like a bank or investment firm) by the depository (CDSL or NSDL).

  • It helps identify who is managing your Demat account.

  • For example, if you're using CDSL, the first 8 digits of your 16-digit BO ID are your DP ID.

BO ID (Beneficial Owner ID):

  • This identifies you, the actual owner of the securities.

  • It includes your DP ID and your unique client ID (in CDSL) or is provided in a specific format in NSDL.

Term

Full Form

Identifies

Example

DP ID

Depository Participant ID

Your broker or DP

12049200

BO ID

Beneficial Owner ID

You (the investor)

1204920001830421 (CDSL) or
IN12345678901234 (NSDL)

Importance of BO ID

Your BO ID is of great importance, and you must know it.

  1. Unique Identity: Your BO ID acts like your digital identity in the securities market. It ensures that your shares are safely recorded under your name.

  2. Essential for Transactions: You can’t buy or sell shares without a valid BO ID. It’s used every time you place an order through your broker.

  3. Tracking Holdings: Your BO ID allows you to view your portfolio and track all your investments in one place.

  4. Regulatory Compliance: For fair trading, market regulators use the BO ID to track whether you are the owner or not.

  5. Receiving Dividends and Bonuses: You receive benefits like dividends, bonuses, or rights issues from your investments, including those made via a SIP, directly through this ID.

How to Find Your BO ID

‘How to check the Demat account number’ or BO ID is a common question that any beginner would like to ask. The most common and easiest ways are as follows:

1.Welcome Letter or Email

  • You get a welcome kit from the depository participant when you open a Demat account.

  • It contains your BO ID and other account details.

2.Demat Account Statement

  • Your regular account statement shows your BO ID.

  • You can receive this by email or access it through your DP’s website.

3.Online Trading Platform

  • Log in to your broker’s website or mobile app.

  • Go to “My Profile” or “Account Details”.

  • You’ll find the BO ID listed there.

4.Email or SMS Alerts

  • When you make transactions, you get email/SMS alerts with your BO ID mentioned in them.

5.Contact Customer Support

  • If all else fails, you can contact your DP or broker’s support team.

  • You may also be required to clear the identity verification before sharing your BO ID.

Common Issues and Troubleshooting

While dealing with BO IDs, here are a few common issues that investors face – and how you can solve them.

1. Forgotten BO ID

  • Check your email, trading app, or account statement.

  • You can also call your DP or broker.

2. Entered Wrong BO ID During Transactions

  • Your transaction may fail or go to the wrong account.

  • Always double-check your BO ID before entering it anywhere.

3. System Errors or Server Downtime

  • Temporary inability to view your BO ID or perform trades.

  • Wait for the system to come back online or call customer care.

4. Mismatch in Records

  • If your PAN or name does not match across accounts, it can lead to issues.

  • Make sure your details are updated and correct in all documents.

Why You Should Keep Your BO ID Safe

While your BO ID is not a secret like your password, it’s still sensitive financial information. Here’s why you should handle it with care:

1. Prevent Misuse

  • If someone gets access to your BO ID and other personal details, they might attempt unauthorised actions through social engineering.

2. Secure Your Portfolio

  • Even though transactions need OTPs and other verifications, keeping your BO ID secure adds an extra layer of protection.

3. Avoid Fraudulent Links or Emails

  • Never share your BO ID through suspicious emails or calls. No legitimate broker will ask for it along with your password or OTP.

Conclusion

So, now you have an idea about your BO ID. It greatly helps you in accessing, managing, and safeguarding your investments digitally. Your BO ID makes sure that everything goes to the right account. You can do anything without doubt, including –

  • Checking your holdings

  • Receiving dividends

  • Executing a trade

After all that you have learned so far, now you can manage your investments more confidently. So, remember, to always –

  • Keep your BO ID handy

  • Double-check before making transactions

  • Regularly monitor your account

Investing is simpler when you understand the basics, like your BO ID.

The information herein is meant only for general reading purposes and the views being expressed only constitute opinions and therefore cannot be considered as guidelines, recommendations or as a professional guide for the readers. The document has been prepared on the basis of publicly available information, internally developed data and other sources believed to be reliable. Recipients of this information are advised to rely on their own analysis, interpretations & investigations. Readers are also advised to seek independent professional advice in order to arrive at an informed investment decision.

Mutual Fund investments are subject to market risks, read all scheme related documents carefully.