(1) Where for any reason the whole or any part of the turnover of business of a dealer has escaped assessment to tax in any year or has been under assessed or has been assessed at a rate lower than the rate at which it is assessable or any deduction has been wrongly made there from, the assessing authority may, at any time within five years from the expiry of the year to which the tax relates, proceed to determine to the best of its judgement the turnover which has escaped assessment to tax or has been under assessed or has been assessed at a rate lower than the rate at which it is assessable or the deduction that has been wrongly made and assess the tax payable on such turnover after issuing a notice on the dealer and after making such enquiry as it may consider necessary:

Provided that before making an assessment under this sub-section the dealer shall be given a reasonable opportunity of being heard.

Provided further that the time limit mentioned in this sub-section shall not apply where the turnover which escaped assessment relates to by business done by such dealer as benamidar or through a benami or where it relates to dealer, who being liable to get himself registered under this Act and the rules made there under has failed to do so.

(2) In making an assessment under sub-section (1), the assessing authority may, if it is satisfied that the escape from assessment is due to willful non-disclosure of assessable turnover by the dealer, direct the dealer to pay, in addition to the tax assessed under sub-section (1) a penalty as provided in section 45A.

Provided that no such penalty shall be imposed unless the dealer affected has had a reasonable opportunity of showing cause against such imposition.

Explanation. - Notwithstanding anything contained in the Indian Evidence Act, 1872, the burden of proving that the escape from assessment was not due to willful non-disclosure of assessable turnover by the dealer shall be on the dealer.

(3) The powers under sub-section (1) may be exercised by the assessing authority even though the original order of assessment, if any, passed in the matter, has been the subject matter of an appeal or revision.

(4) In computing the period of limitation for the purposes of this section, the time during which the proceedings for assessment remained stayed under the orders of a Civil court or other competent authority shall be excluded.