The department on Friday issued an advisory asking taxpayers to furnish their latest information such as personal and secondary email and mobile phone numbers, address and bank account details.
These details will be verified and processed after the taxpayer is sent a One Time Password (OTP) over the email and through SMS over the phone.
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The updated information, a senior official said, is being sought to ensure that a communication sent to a taxpayer reaches him without fail and in good time.
"A taxpayer can do any business using their personal e- filing account only after updating the details," he said.
The taxpayers can access their personal e-filing account at https://incometaxindiaefiling.gov.in/.
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