What Is TPIN in a Demat Account and How to Generate One

• Summary
• TPIN (Transaction Personal Identification Number) is a six-digit security code used to authorise eligible securities debits from a demat account through CDSL’s e-DIS facility in India.
• TPIN is generally required to authorise the sale of shares held in a CDSL demat account through e-DIS.
• Investors can generate or change their TPIN through CDSL’s official online portal.
• A valid DDPI or Power of Attorney (POA) may remove the need for separate TPIN authorisation for covered transactions.

What Is TPIN?

TPIN stands for Transaction Personal Identification Number. It is a security code generated by the depository, such as the Central Depository Services Limited (CDSL), to authorise eligible transactions that debit securities from a demat account. For example, investors may need to enter their TPIN and complete OTP verification to authorise the sale of shares held in their CDSL demat account.

TPIN helps verify that the account holder has approved the transaction, adding a layer of security to the transfer of securities. It is different from a trading account password, ATM PIN or mobile banking PIN, as it is used specifically for eligible demat account authorisations.

How Did TPIN Come Into the Picture?

Earlier, investors commonly authorised brokers to debit securities from their demat accounts through a Power of Attorney (POA). On 1 June 2020, brokers using CDSL began implementing a revised TPIN-based e-DIS authorisation process in line with SEBI’s mandate. This enabled investors to authenticate eligible securities debits through the depository’s system rather than relying solely on a standing authorisation given to their broker.

When Do You Need a TPIN (and When You Don’t)

A TPIN is used to authorise eligible securities debits from a demat account through CDSL’s electronic Delivery Instruction Slip (e-DIS) facility. Whether you need to enter it depends on your transaction and the authorisation method linked to your account.

• Selling shares from your holdings: If you use CDSL’s TPIN-based e-DIS facility, you generally need to authorise the securities debit using your TPIN and complete any required verification.
• Is TPIN required for intraday trading? Generally, no. Intraday trades squared off on the same day do not ordinarily involve delivering shares from your demat account. If a trade results in a delivery obligation, additional authorisation may be required.
• When DDPI or POA is active: You may not need a separate TPIN authorisation for transactions covered by a valid Demat Debit and Pledge Instruction (DDPI) or Power of Attorney (POA).
• When buying shares: TPIN-based e-DIS authorisation generally applies to securities debits, not routine share purchases.

The exact process depends on your depository, broker and account arrangements. Check your broker’s instructions if you are unsure whether a transaction requires TPIN.

How to Generate a TPIN

Follow these simple steps to learn how to generate TPIN through CDSL’s official website:

Step 1: Visit https://edis.cdslindia.com/Home/GeneratePin to access the ‘Generate e-DIS TPIN’ option to begin the process.

Step 2: Provide your 16-digit Beneficial Owner Identification, also commonly referred to as BO ID, which identifies your demat account.

Step 3: Once you’ve done that, enter your Permanent Account Number (PAN), complete the captcha, and click the ‘Next’ button.

Step 4: Upon registration, a One-Time Password (OTP) will be sent to the email and mobile number you have submitted. You are required to input the OTP into the specified field to confirm your identity.

Once the verification is successful, your newly generated TPIN will be sent to your registered contact details.

The online process allows you to authorise eligible securities transactions electronically, without relying solely on physical instructions. Keep your TPIN confidential and avoid using predictable number combinations.

How to Change or Reset Your TPIN

CDSL provides TPIN services that allow investors to generate a new TPIN, change or reset an existing one, or retrieve it if forgotten. These services are available through CDSL’s website and may also be accessible directly through a broker’s online trading platform.

You can change TPIN online through CDSL’s official portal by following these steps:

Step 1: Visit https://edis.cdslindia.com/home/changepin to begin the change TPIN process.

Step 2:  Provide your 16-digit Beneficial Owner Identification (BO) ID, PAN, captcha, and click ‘Next’. 

Step 3: CDSL will send an OTP to verify your request. Enter the OTP received and proceed. The OTP is valid for 15 minutes, so request a fresh one if it expires.

Step 4: After successful verification of the OTP, you will be asked to input a new TPIN number.

Please note that the new TPIN may take a few minutes to become active and ready for use.

Once the change is completed, follow the portal’s confirmation and use your new TPIN for eligible e-DIS transactions. You can also check whether your broker’s platform offers a direct link to CDSL’s TPIN service.

DDPI vs TPIN: How to Avoid Entering a TPIN Every Time

DDPI and TPIN differ in how they authorise securities debits, as follows:

Feature	TPIN-based authorisation	DDPI
Meaning	A security code used to authenticate eligible e-DIS transactions	Demat Debit and Pledge Instruction, an authorisation arrangement
How it works	The investor authenticates each applicable e-DIS instruction	The broker can debit securities for specified permitted purposes covered by the authorisation
Repeated authorisation	Required for each e-DIS transaction using the TPIN-based mechanism	Can remove the separate TPIN step for covered transactions
Is it mandatory?	Depends on the transaction and authorisation method	No, DDPI is optional
Investor control	The investor authenticates the applicable instruction	The investor gives explicit consent and can revoke the authorisation

A POA is an older authorisation arrangement that may also allow a broker to debit securities for specified purposes. Like DDPI, a valid POA can remove the need for separate TPIN authorisation for transactions covered by its terms. DDPI provides a standardised alternative, but investors are not required to opt for it. Both arrangements remain subject to applicable rules and the scope of the authorisation provided.

TPIN vs MPIN

TPIN and MPIN serve different authentication purposes, as follows:

Feature	TPIN	MPIN
Full form	Transaction Personal Identification Number	Mobile Personal Identification Number
Main purpose	Authorises eligible securities debit instructions	Authenticates access to or transactions through a supported mobile service
Where it is used	Depository authorisation, such as CDSL’s e-DIS facility	Mobile banking or other supported financial applications
Issuance or setup	Generated through the depository’s process	Set up or issued according to the service provider’s process
What it protects	Authorisation of securities transfers from a demat account	Access to or actions within the relevant mobile service

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