A Client ID in a Demat account is a unique number used to identify an investor’s account with a depository participant (DP). It is an important part of your demat account details and may be required when applying for an IPO, transferring securities, registering for depository services or providing account information.
However, the meaning and format can differ slightly between CDSL and NSDL.
In CDSL, the Client ID is generally the last 8 digits of the 16-digit BO ID (Beneficial Owner ID). In NSDL, the Client ID is also an 8-character/8-digit identifier, and it is combined with the DP ID to form the complete demat account number.
What Is a Client ID?
A Client ID is an identification number assigned to your demat account by the depository system through your Depository Participant.
A simple way to understand it is:
DP ID identifies the Depository Participant + Client ID identifies your account with that DP
Together, they identify your demat account.
For example, in a CDSL account:
DP ID: 12010000
Client ID: 12345678
BO ID: 1201000012345678
CDSL confirms that its 16-digit demat account number, known as the BO ID, consists of an 8-digit DP ID followed by an 8-digit Client ID.
Client ID vs Demat Account Number
These terms are often confused.
A Client ID is only one part of the complete demat account number.
| Term | Meaning |
| DP ID | Identifies the Depository Participant |
| Client ID | Identifies the investor’s account with the DP |
| BO ID | Complete CDSL demat account number |
| Demat Account Number | Complete account identifier used by the relevant depository |
For CDSL:
DP ID + Client ID = BO ID/Demat Account Number
For NSDL:
DP ID + Client ID = Complete NSDL demat account number
NSDL states that its DP ID is an 8-character code and the Client ID is an 8-digit code; together they form the unique account number in the NSDL system.
What Is a Client ID in CDSL?
CDSL uses a 16-digit BO ID as the demat account number.
It is divided into two parts:
First 8 digits = DP ID
Last 8 digits = Client ID
Example
Suppose your CDSL demat account number is:
1201000012345678
Then:
| Particular | Number |
| DP ID | 12010000 |
| Client ID | 12345678 |
| BO ID | 1201000012345678 |
CDSL’s investor information specifically describes the BO ID as a 16-digit number consisting of 8 digits for the DP ID and 8 digits for the Client ID.
What Is a Client ID in NSDL?
NSDL also uses a DP ID and Client ID structure.
According to NSDL’s guide for demat account holders:
- DP ID: 8-character code
- Client ID: 8-digit code
- DP ID + Client ID: Complete demat account number
For example, an NSDL account may look conceptually like:
DP ID: IN3XXXXX
Client ID: 12345678
The complete account identification is therefore made up of both components.
One important difference is that NSDL DP IDs can contain letters, whereas CDSL’s DP ID is represented as an 8-digit component of the BO ID.
Where Can You Find Your Client ID?
You usually do not need to contact the depository separately to find your Client ID.
You can normally find it in:
- Demat Account Statement
Check your demat statement or holding statement.
Look for terms such as:
- Client ID
- BO ID
- Demat Account Number
- DP ID
- Beneficiary ID
If the statement gives the complete CDSL BO ID, the last 8 digits are the Client ID.
- Client Master Report
Your Client Master Report (CMR) or client master details contain important demat account information.
NSDL’s investor guide states that after opening a demat account, the DP provides the investor with the DP ID, Client ID and Client Master Report.
Your broker/DP may provide the CMR through its website or app.
- Broker App or Website
Log in to your broker account and look under sections such as:
- Profile
- Account details
- Demat details
- My account
- Linked accounts
- Holdings
- Demat information
The exact location differs between brokers.
- Account Opening Documents
Your original demat account-opening documents may contain:
- DP ID
- Client ID
- BO ID
- Demat account number
If you still have your account-opening confirmation or client master document, check there.
- CDSL or NSDL Services
If your account is with CDSL, CDSL’s services may ask for the BO ID or other account information. CDSL’s Easiest registration page, for example, asks users to enter their DP ID and Client ID.
How to Find Client ID From CDSL Demat Account Number
This is one of the easiest cases.
Suppose your CDSL BO ID is:
1208160012345678
Separate it into two groups:
12081600 | 12345678
Therefore:
- DP ID = 12081600
- Client ID = 12345678
So, if a form specifically asks for your Client ID, you generally enter the last 8 digits.
CDSL’s official information confirms this 8-digit + 8-digit structure.
How to Find Client ID From NSDL Demat Account Number
NSDL accounts use a different format.
Your NSDL demat account details contain:
DP ID + Client ID
For example:
IN3XXXXX + 12345678
Here, the Client ID is the 8-digit portion.
NSDL’s official investor guide specifically explains that the Client ID is an 8-digit code and that it combines with the DP ID to form the unique account number.
If you are unsure where the separation occurs in your particular statement, check the Client Master Report or ask your DP rather than guessing.
Is Client ID the Same as Customer ID?
Not always.
A broker may use terms such as:
- Customer ID
- Client ID
- User ID
- Trading ID
- Client Code
These can refer to different identifiers.
For example, your trading account client code may be different from your demat Client ID.
Therefore, if a form specifically asks for the Demat Client ID, use the identifier provided in your depository account details rather than automatically entering your broker login ID or trading client code.
Is Client ID the Same as BO ID?
No, not in the CDSL system.
The CDSL BO ID is the complete 16-digit demat account number, while the Client ID is the last 8-digit portion.
For example:
BO ID: 1201000012345678
DP ID: 12010000
Client ID: 12345678
CDSL itself describes the BO ID as the 16-digit demat account number and identifies its two 8-digit components.
Is Client ID the Same as DP ID?
No.
They identify different things.
DP ID = Depository Participant
Client ID = Your account with that DP
For example:
DP ID: 12010000
Client ID: 12345678
The DP ID may be shared by many customers of the same DP, while the Client ID distinguishes the individual account.
Why Is the Client ID Required?
You may need your Client ID for several activities involving your demat account.
Common examples include:
- IPO applications
- Demat account registration
- Depository services
- Securities transfers
- Account verification
- Client Master Report requests
- Certain corporate-action processes
- Providing demat details to another authorized institution
For example, CDSL’s Easiest registration process specifically asks for the DP ID and Client ID.
Client ID for IPO Applications
When applying for an IPO, you may be asked to provide your demat account details so that allotted shares can be credited to the correct account.
The required fields can differ between application interfaces.
You may see:
- DP ID
- Client ID
- Depository
- Demat Account Number
If the form asks separately for DP ID and Client ID, do not enter the entire BO ID in the Client ID field.
For a CDSL account:
DP ID = first 8 digits
Client ID = last 8 digits
If the form asks for the complete demat account number, enter the entire BO ID.
Client ID for Share Transfer
A Client ID may also be relevant when transferring securities through depository mechanisms.
For example, the receiving account may need to be identified using its appropriate DP ID and Client ID or complete demat account number, depending on the transfer process.
Be extremely careful when entering these details because an incorrect account identifier can cause transaction problems.
How to Check Whether Your Demat Account Is CDSL or NSDL
Your account documents or broker app usually show the depository.
You can also look at the format of your account number.
CDSL
Generally:
16-digit BO ID
Example:
1201000012345678
NSDL
Generally:
8-character DP ID + 8-digit Client ID
Example:
IN3XXXXX12345678
However, account presentation can vary across brokers, so the best approach is to confirm the depository from your account statement or Client Master Report.
What If You Cannot Find Your Client ID?
If you cannot locate your Client ID, try these steps:
- Open your latest demat statement.
- Check your broker’s account details.
- Look for your Client Master Report.
- Identify whether the account is with CDSL or NSDL.
- Check your original account-opening documents.
- Contact your DP/broker through its official support channel.
For CDSL accounts, CDSL’s investor guidance says that if a beneficial owner does not know their BO ID, they should approach their DP to obtain the demat account number.
Does Client ID Change If You Change Brokers?
It depends on what exactly is being changed.
If you transfer securities from one demat account to another and open a new demat account with another DP, the new demat account will have its own account identification details.
Therefore, do not assume that the Client ID from your old demat account will remain the same with a new DP.
Your trading account/client code and demat account identification are also separate concepts.
Can You Have More Than One Client ID?
Yes.
An investor can have multiple demat accounts with different DPs. Each demat account has its own identifying details.
For example, if you maintain:
- One CDSL demat account with Broker A
- Another demat account with Broker B
the two accounts can have different DP IDs and Client IDs.
CDSL’s Easi FAQ also provides for grouping multiple accounts belonging to a beneficial owner under the same PAN in applicable circumstances.
Client ID vs Other Demat Details
| Detail | What It Identifies |
| PAN | Investor’s tax/KYC identity |
| DP ID | Depository Participant |
| Client ID | Investor’s demat account with the DP |
| BO ID | Complete CDSL demat account number |
| Demat Account Number | Complete account identifier |
| Trading Client ID | Trading/brokerage relationship |
| Bank Account Number | Linked bank account |
These numbers should not be confused with one another.
Common Mistakes to Avoid
Entering the Full BO ID as Client ID
If a form separately asks for DP ID and Client ID, don’t enter all 16 digits into the Client ID field for a CDSL account.
Confusing Trading Client ID With Demat Client ID
Your broker’s trading client code may not be your depository Client ID.
Confusing DP ID With Client ID
The DP ID identifies the depository participant; the Client ID identifies your account.
Copying the Wrong Account
If you have multiple demat accounts, verify which account is intended for the transaction.
Sharing Account Details Carelessly
A Client ID is routinely used for legitimate investment and settlement purposes, but you should still avoid sharing complete account credentials, passwords, TPINs or OTPs with anyone.
Frequently Asked Questions
What is a Client ID in a Demat account?
A Client ID is an identifier used to identify an investor’s demat account with a Depository Participant. It forms part of the complete demat account number.
How many digits is a Client ID?
In the standard CDSL and NSDL structures, the Client ID is generally 8 digits. CDSL uses the last 8 digits of its 16-digit BO ID as the Client ID, while NSDL describes its Client ID as an 8-digit code.
Where can I find my Client ID?
You can usually find it in your demat statement, Client Master Report, account-opening documents or broker account details.
What is the Client ID in CDSL?
In CDSL, the Client ID is the last 8 digits of the 16-digit BO ID.
What is the Client ID in NSDL?
In NSDL, the Client ID is an 8-digit identifier that combines with the DP ID to form the complete demat account number.
Is Client ID the same as BO ID?
No. In CDSL, the BO ID is the complete 16-digit demat account number, while the Client ID is the last 8 digits.
Is Client ID the same as DP ID?
No. DP ID identifies the Depository Participant, whereas Client ID identifies your account with that DP.
Is Client ID the same as trading client ID?
Not necessarily. A broker’s trading client code and the depository Client ID can be different identifiers.
Can I find my Client ID using my PAN?
PAN can help your broker or depository identify your account, but it does not itself represent your Client ID. CDSL’s services may use PAN along with other information for account-related verification.
Conclusion
A Client ID is an important part of your Demat account identification. For CDSL, it is the last 8 digits of the 16-digit BO ID, while NSDL uses an 8-digit Client ID alongside its DP ID.
The easiest way to find it is to check your demat statement, Client Master Report or broker account details.
Remember the basic structure:
CDSL: DP ID + Client ID = 16-digit BO ID
NSDL: DP ID + Client ID = Complete demat account number
Before entering the details for an IPO, securities transfer or other transaction, check whether the form is asking for the DP ID, Client ID or complete demat account number, because these are not interchangeable.
