The Income Tax Department has announced that Aadhaar-based OTP authentication is now mandatory for updating mobile numbers or email IDs on the income tax e-filing portal. This change, effective immediately, aims to prevent unauthorized modifications and ensure that only the rightful taxpayer can alter sensitive contact details.
Additionally, from July 1, 2025, furnishing and verifying an Aadhaar number has become mandatory for anyone applying for a new PAN (Permanent Account Number). This change was introduced through a new rule issued by the Central Board of Direct Taxes (CBDT) and is part of the government's larger initiative to strengthen the digital ecosystem and minimize identity-related fraud.

Why the Aadhaar OTP Mandate?
The Aadhaar OTP requirement for updating contact information is being viewed as a proactive measure against account hijacking and fraudulent communication. Until now, taxpayers could modify contact details with minimal verification. But with this change, Aadhaar-linked OTP verification adds a layer of authentication to secure taxpayer profiles.
PAN Application Now Requires Aadhaar Verification
According to the updated CBDT rule, a PAN application is considered valid only when the Aadhaar number is provided and authenticated online. Previously, a PAN could be obtained using any accepted identity and address proof, such as a voter ID or birth certificate. Now, without Aadhaar verification, a new PAN will not be issued.
The online e-filing portal has been equipped to facilitate the Aadhaar-PAN linking and OTP authentication process, making it accessible and efficient for users.
For Existing PAN Holders: Deadline & Penalty
For those who already have a PAN card but haven't yet linked it with their Aadhaar, the deadline has been extended to December 31, 2025. However, failing to link Aadhaar by this date will render the PAN "inoperative," and a penalty of Rs 1,000 may be levied for delayed linkage.
Why This Change Matters
This initiative is part of the government's broader push toward e-governance, transparency, and digital KYC (Know Your Customer) compliance. It is designed to eliminate duplicate or fake PAN cards, curb tax evasion, and accelerate refunds by ensuring that each PAN is uniquely linked to an Aadhaar-verified individual.
A senior CBDT official remarked, "Verification of Aadhaar-related information will ensure that a person has only one valid PAN in his name."
Conclusion
With Aadhaar now playing a central role in both PAN issuance and contact detail updates, taxpayers are urged to ensure their Aadhaar is active, updated, and accessible. This move is expected to enhance the integrity of India's tax system and promote secure, efficient digital transactions under the Digital India framework.