Related imageEvery person who has been allotted permanent account number as on the 1st day of July, 2017 and who in accordance with the provisions of sub-section (2) of section 139AA is required to intimate his Aadhaar number, shall intimate his Aadhaar number to the Principal Director General of Income-tax (Systems) or Director- General of Income-tax (Systems) or the person authorised by the said authorities.

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Source – Department of Income Tax | www.incometax.gov.in