(1) Where any duty of excise has not been levied or paid or has been short-levied or short-paid or erroneously refunded, for any reason, other than the reason of fraud or collusion or any wilful mis-statement or suppression of facts or contravention of any of the provisions of this Act or of the rules made thereunder with intent to evade payment of duty,-

(a) the Central Excise Officer shall, within two years from the relevant date, serve notice on the person chargeable with the duty which has not been so levied or paid or which has been so short-levied or short-paid or to whom the refund has erroneously been made, requiring him to show cause why he should not pay the amount specified in the notice;

(b) the person chargeable with duty may, before service of notice under clause (a), pay on the basis of,

(i) his own ascertainment of such duty; or

(ii) the duty ascertained by the Central Excise Officer, the amount of duty along with interest payable thereon under section 11AA.

(2) The person who has paid the duty under clause (b) of sub-section (1), shall inform the Central Excise Officer of such payment in writing, who, on receipt of such information, shall not serve any notice under clause (a) of that sub-section in respect of the duty so paid or any penalty leviable under the provisions of this Act or the rules made thereunder.

(3) Where the Central Excise Officer is of the opinion that the amount paid under clause (b) of sub-section (1) falls short of the amount actually payable, then, he shall proceed to issue the notice as provided for in clause (a) of that sub-section in respect of such amount which falls short of the amount actually payable in the manner specified under that sub-section and the period of two years shall be computed from the date of receipt of information under sub-section (2).

(4) Where any duty of excise has not been levied or paid or has been short-levied or short-paid or erroneously refunded, by the reason of-

(a) fraud; or

(b) collusion; or

(c) any wilful mis-statement; or

(d) suppression of facts; or

(e) contravention of any of the provisions of this Act or of the rules made thereunder with intent to evade payment of duty, by any person chargeable with the duty, the Central Excise Officer shall, within five years from the relevant date, serve notice on such person requiring him to show cause why he should not pay the amount specified in the notice along with interest payable thereon under section 11AA and a penalty equivalent to the duty specified in the notice.

(7A) Notwithstanding anything contained in sub-section (1) or sub-section (3) or sub-section (4), the Central Excise Officer may, serve, subsequent to any notice or notices served under any of those sub-sections, as the case may be, a statement, containing the details of duty of central excise not levied or paid or short-levied or short-paid or erroneously refunded for the subsequent period, on the person chargeable to duty of central excise, then, service of such statement shall be deemed to be service of notice on such person under the aforesaid sub-section (1) or sub-section (3) or sub-section (4) or sub-section (5), subject to the condition that the grounds relied upon for the subsequent period are the same as are mentioned in the earlier notice or notices.

(8) Where the service of notice is stayed by an order of a court or tribunal, the period of such stay shall be excluded in computing the period of two years referred to in clause (a) of sub-section (1) or five years referred to in sub-section (4), as the case may be.

(9) Where any appellate authority or tribunal or court concludes that the notice issued under sub-section (4) is not sustainable for the reason that the charges of fraud or collusion or any wilful mis-statement or suppression of facts or contravention of any of the provisions of this Act or of the rules made thereunder with intent to evade payment of duty has not been established against the person to whom the notice was issued, the Central Excise Officer shall determine the duty of excise payable by such person for the period of two years, deeming as if the notice were issued under clause (a) of sub-section (1).

(10) The Central Excise Officer shall, after allowing the concerned person an opportunity of being heard, and after considering the representation, if any, made by such person, determine the amount of duty of excise due from such person not being in excess of the amount specified in the notice.

(11) The Central Excise Officer shall determine the amount of duty of excise under sub-section (10) -

(a) within six months from the date of notice where it is possible to do so, in respect of cases falling under sub-section (1);

(b) within two years from the date of notice, where it is possible to do so, in respect of cases falling under sub-section (4)

(12) Where the appellate authority or tribunal or court modifies the amount of duty of excise determined by the Central Excise Officer under sub-section (10), then the amount of penalties and interest under this section shall stand modified accordingly, taking into account the amount of duty of excise so modified.

(13) Where the amount as modified by the appellate authority or tribunal or court is more than the amount determined under subsection (10) by the Central Excise Officer, the time within which the interest or penalty is payable under this Act shall be counted from the date of the order of the appellate authority or tribunal or court in respect of such increased amount.

(14) Where an order determining the duty of excise is passed by the Central Excise Officer under this section, the person liable to pay the said duty of excise shall pay the amount so determined along with the interest due on such amount whether or not the amount of interest is specified separately.

(15) The provisions of sub-sections (1) to (14) shall apply, mutatis mutandis , to the recovery of interest where interest payable has not been paid or part paid or erroneously refunded.

(16) The provisions of this section shall not apply to a case where the liability of duty not paid or short-paid is self-assessed and declared as duty, payable by the assessee in the periodic returns filed by him, and in such case, recovery of non-payment or short-payment of duty shall be made in such manner as may be prescribed.

Explanation 1 . - For the purposes of this section and section 11AC,-

(a) "refund" includes rebate of duty of excise on excisable goods exported out of India or on excisable materials used in themanufacture of goods which are exported out of India;

(b) "relevant date" means,-

(i) in the case of excisable goods on which duty of excise has not been levied or paid or has been short-levied or short-paid, andno periodical return as required by the provisions of this Act has been filed, the last date on which such return is required to be filed under this Act and the rules made thereunder;

(ii) in the case of excisable goods on which duty of excise has not been levied or paid or has been short-levied or short-paid andthe return has been filed, the date on which such return has been filed;

(iii) in any other case, the date on which duty of excise is required to be paid under this Act or the rules made thereunder;

(iv) in a case where duty of excise is provisionally assessed under this Act or the rules made thereunder, the date of adjustmentof duty after the final assessment thereof;

(v) in the case of excisable goods on which duty of excise has been erroneously refunded, the date of such refund;

(vi) in the case where only interest is to be recovered, the date of payment of duty to which such interest relates.

Explanation 2 . - For the removal of doubts, it is hereby declared that any non-levy, short-levy, non-payment, short-payment or erroneous refund where no show cause notice has been issued before the date on which the Finance Bill, 2015 receives the assent of the President, shall be governed by the provisions of section 11A as amended by the Finance Act, 2015.