(1) In any case in which an order of assessment or re-assessment or rejection of application for registration or order of penalty is passed exparte, the dealer may apply to the assessing authority within thirty days of the service of the order to set aside such order and re-open the case; and if such authority is satisfied that the applicant did not receive notice or was prevented by sufficient cause from appearing on the date fixed, it may set aside the order and reopen the case for hearing:

Provided that no such application for setting aside an exparte assessment order shall be entertained unless it is accompanied by satisfactory proof of the payment of the amount of tax to be due under this Act on the turnover of sales or purchases, or both, as the case may be, admitted by the dealer in the returns filed by him or at any stage in any proceeding under this Act, whichever is greater.

(2) Where an assessment order under sub-section (1) of section 25 is passed, exparte, the dealer may apply to the Assessing Authority within thirty days of the service of the order, to set aside such order and if such authority is satisfied that the dealer has filed the tax return and deposited the tax due according to the tax return within thirty days from the last day prescribed for filing such tax return, it may modify or set aside such order and also the demand notice, if any, issued thereunder.

(a) appeal under section 55 against such order has been dismissed as barred by time;

(b) in appeal before the Tribunal under section 57, order, passed by the Appellate Authority under section 55, has been confirmed; and

(c) Commissioner or Additional Commissioner designated by the Commissioner, after giving reasonable opportunity of being heard to the dealer, is satisfied that-

(i) dealer, at any stage during the period of assessment or reassessment proceedings, had no notice of initiation of such proceedings;

(ii) as a result of ex parte assessment or reassessment, without proper basis amount of tax has been levied;

(iii) undue hardship will be caused to the dealer if such assessed tax is realized from him; and

(iv) if, after giving reasonable opportunity of being heard to the dealer, tax is reassessed, demand created by earlier order of assessment or reassessment may stand reduced to a large extent, he may direct the assessing authority to set aside such ex parte order of assessment or reassessment and to make assessment or reassessment after affording reasonable opportunity to the dealer, if the dealer presents an application before the Commissioner within a period of sixty days from the date on which dealer receives the order passed by the Tribunal under section 57.