Zerodha unique contact details shared mobile number KYC compliance demat account SEBI CDSL

Zerodha email: multiple accounts share the same mobile or email

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A Zerodha email stating that your registered mobile number or email ID is linked to more than one trading account is a KYC-compliance notice, not a fraud alert. SEBI requires each client to hold a unique mobile number and email ID against every trading and demat account , so that exchange and broker communications, order confirmations, and one-time passwords reach a single identifiable contact. When the same number or email sits on two or more accounts, Zerodha’s records breach that requirement, and the email asks you to make the contact details unique or to declare a permitted family relationship.

The email matters because the contact detail is the channel through which you receive trade SMS alerts , margin-shortfall notices, the contract note, and the consolidated account statement. SEBI’s design intent is that those messages reach the account holder alone, not a shared inbox or a recycled phone. This guide sets out the exact regulatory basis, the family exception and the declarations it needs, the separate route for HUF and corporate accounts, and the consequence of leaving the duplication in place.

Conflict-of-interest disclosure. This guide is published by the WebNotes Editorial Team for informational purposes and is written independently. WebNotes operates a Zerodha account-opening referral programme, disclosed on the pages that carry the referral link; this guide does not carry it and earns no referral commission from the procedure described here.

Why SEBI requires unique contact details

A trading and demat account is the regulated channel for securities ownership and order flow, and SEBI’s KYC framework treats the registered mobile number and email ID as the client’s verified contact of record. SEBI requires each client to have a unique mobile number and email ID so that confirmations and alerts reach the account holder and no one else. The same requirement flows through the depositories: under the KYC norms applied by CDSL and NSDL , separate mobile numbers and email addresses must be provided for beneficial-owner account holders. Zerodha, as a depository participant of CDSL and a stockbroker on the exchanges, has to keep those details unique per account in the records it files with the exchanges.

The duplication usually arises in three ways: a parent opens an account for a child on the parent’s number, spouses use one shared family email, or a person who runs a HUF or company account reuses the same individual contact on the entity account. None of these is fraudulent, but each leaves two regulated accounts pointing at one contact, which the system flags.

The family exception and its declarations

SEBI permits close family to share contact details, and Zerodha implements this through two declarations. The family scope is narrow: spouse, dependent children and dependent parents only. Friends, siblings, and independent adult relatives do not qualify; for them, each account must carry its own unique mobile and email.

To claim the exception, you submit a Shared contact details declaration, signed with the signature on your account-opening form, accompanied by your family member’s ID proof. Zerodha accepts a birth certificate, marriage certificate, passport, masked Aadhaar or PAN as the relationship proof. The family member whose account also carries the shared detail submits a separate Account contact details declaration. Both declarations together establish that the shared number or email is used within a permitted relationship rather than across unrelated clients.

You can submit the declarations two ways. Online, you print the relevant form, fill and sign it so the signature matches your account-opening signature, scan it, then eSign and submit it with the ID proof by raising a support ticket. Offline, you courier the completed form with the ID proof to Zerodha’s Customer Support Centre at 192A, 4th Floor, Kalyani Vista, 3rd Main Road, JP Nagar 4th Phase, Bengaluru 560076.

Non-individual accounts: HUF, corporate and partnership

When the same mobile or email links an individual account to a non-individual account, the route differs. Non-individual accounts (HUF, corporate or partnership) submit the non-individual account declaration offline. Each account must still carry a unique mobile number and email ID. The declaration runs from the holder of whichever account was opened first: that holder provides a declaration covering the relationship between the individual and the non-individual account, for example a director, major shareholder, partner or trustee confirming the link between the entity and the individual. The same family-scope limits do not apply here; the test is the documented relationship of the signatory to the entity.

This is also why Zerodha cannot resolve an individual-and-HUF overlap online: the entity declaration is a physical, signed document that goes through Zerodha’s support centre rather than a self-service edit in Console.

How to make the contact details unique

If you are not claiming an exception, the cleaner fix is to change the contact detail on one of the accounts. Log in to console.zerodha.com/account, click the edit icon next to the mobile number or email ID on the account you want to change, enter the new unique detail, and verify it by the OTP sent to that number or email. The change to an individual account’s email or mobile typically completes online; see How to change your registered mobile number on Zerodha and How to change your registered email on Zerodha for the full flows, including the cases where Zerodha routes the change offline.

A joint account, a non-individual account, or an account where the demat record cannot be edited online will return a message that the update cannot be processed online. In those cases the change runs through the declaration-and-ticket route above rather than the self-service Console edit.

Consequence of leaving it unresolved

The duplication has two effects. First, continued non-compliance with the unique-contact-detail requirement can lead to KYC-related restrictions on the trading account, because the account no longer meets the standard SEBI mandates for an active, compliant client record. Second, Zerodha’s own policy bars opening fresh accounts on already-shared details: you cannot register a new Zerodha account using a mobile number or email already attached to an existing Zerodha account. So even if your existing accounts keep working in the short term, the duplication blocks any future account opening on those details and leaves a standing compliance gap that a later re-KYC cycle will surface.

If the email reached you in error, that you genuinely hold only one Zerodha account and the contact details are already unique, raise a support ticket so Zerodha can reconcile its records; do not assume the notice is spam, because the sender address and the Console banner will match Zerodha’s official channels . Verify any link in the email resolves to a zerodha.com domain before acting on it.

See also

External references

References

  1. Zerodha support, Why did I receive an email asking me to update mobile number or Email ID as it is linked to multiple trading accounts? (as of 21 June 2026).
  2. Zerodha support, Why did Zerodha send an email stating multiple accounts have been created using the same mobile number or email ID? (Shared contact details declaration, Account contact details declaration, non-individual account declaration; as of 21 June 2026).
  3. SEBI circular SEBI/HO/MIRSD/DOP/CIR/P/2020/73, dated 24 April 2020, on the KYC process and use of technology for KYC (PAN and bank verification, unique-contact principle in the KYC record).
  4. SEBI and depository (CDSL, NSDL) KYC norms requiring separate mobile numbers and email addresses for beneficial-owner account holders.

WebNotes Editorial Team prepares factual reference material based on publicly available regulatory documents and broker disclosures. WebNotes is not affiliated with Zerodha Broking Limited. Procedures and forms are subject to change; verify current requirements at support.zerodha.com before acting.

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Frequently asked questions

Why did Zerodha email me that my mobile number or email is linked to multiple accounts?
SEBI requires each trading and demat account to carry a unique mobile number and email ID. Zerodha found your contact detail registered on more than one account and is asking you to make each account’s details unique, or to file a shared-contact-details declaration if the accounts belong to close family.
Can my spouse and I use the same email and mobile on our Zerodha accounts?
Only after you each submit the declarations. Shared contact details are permitted for spouse, dependent children and dependent parents. You file a Shared contact details declaration with the relative’s ID proof, and the relative files an Account contact details declaration. Without these, the contact details must be unique.
What counts as ID proof for the shared-contact declaration?
Zerodha accepts a birth certificate, marriage certificate, passport, masked Aadhaar or PAN of the family member to establish the relationship. The relationship must be spouse, dependent child or dependent parent; friends and extended family do not qualify for the exception.
What happens if I ignore the email?
Continued non-compliance can lead to KYC-related restrictions on the trading account. Zerodha also will not let you open a fresh account using contact details already registered on an existing Zerodha account, so the duplication blocks any new account opening on those details.
How do I make my contact details unique?
Log in to console.zerodha.com/account, edit the mobile number or email ID on the account that should change, and verify the new detail by OTP. If the account is a joint or non-individual account, the change runs offline through a declaration submitted on a support ticket.
My HUF and individual accounts share the same email. What do I do?
Non-individual accounts (HUF, corporate, partnership) submit a non-individual account declaration offline. The holder of whichever account was opened first provides a declaration covering the relationship between the individual and the non-individual account. Each account must still carry a unique mobile and email going forward.
Is sharing a number across two brokers a problem too?
The Zerodha rule governs accounts within Zerodha; you cannot register the same number on two Zerodha accounts. A different broker can register the same number, since the uniqueness check runs per depository participant and broker, not across the whole market.

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