¹[184B.²[(1) Every assessee or any person who applies manually or electronically for a Taxpayer’s Identification Number will be issued a certificate containing twelve-digit Taxpayer’s Identification Number and such other particulars in such manner as may be prescribed:

Provided that twelve-digit Tax-payer’s Identification Number may be issued without any application where any income tax authority has found a person having taxable income during the year and possesses such necessary information of that person for issuance of twelve-digit Tax-payer’s Identification Number.]

(2) Board may, by general or special order in writing, direct any person or classes of persons who already hold a Tax-payer's Identification Number to furnish such information or documents for the purpose of re-registration and thereafter issue ³[twelve-digit] a new Taxpayer's Identification Number.]

⁴[(3) Every existing assessee having ten-digit Tax-payer’s Identification Number or a Temporary Registration Number (TRN) shall have to obtain twelve-digit Tax-payer’s Identification Number (TIN) before the last date of submission of return of income as required under section 75.]