¹[11DD.  Interest on the amounts collected in excess of the duty.-- (1)  Where an amount has been collected in excess of the duty assessed or determined and paid on any excisable goods under this Act or the rules made thereunder from the ²[buyer of such goods or from any person or where a person has collected any amount as representing duty of excise on any excisable goods which are wholly exempt or are chargeable to nil rate of duty, the person who is liable to pay such amount as determined under sub-section (3) of Section 11-D, shall, in addition to the amount, be liable to pay interest at such rate not below ten per cent, and not exceeding thirty-six percent per annum, as is for the time being fixed by the Central Government, by notification in the Official Gazette, from the first day of the month succeeding the month in which the amount ought to have been paid under this Act, but for the provisions contained in sub-section (3) of Section 11-D, till the date of payment of such amount:

   Provided that in such cases where the amount becomes payable consequent to issue of an order, instruction or direction by the Board under Section 37B, and such amount payable is voluntarily paid in full, without reserving any right to appeal against such payment at any subsequent stage, within forty-five days from the date of issue of such order, instruction or direction, as the case may be, no interest shall be payable and in other cases the interest shall be payable on the whole amount, including the amount already paid.

   (2)  The provisions of sub-section (1) shall not apply to cases where the amount had become payable or ought to have been paid before the day on which the Finance Bill, 2003 receives the assent of the President.

   Explanation 1.-- Where the amount determined under sub-section (3) of Section 11-D is reduced by the Commissioner (Appeals), the Appellate Tribunal or, as the case may be, the court, the interest payable thereon under sub-section (1) shall be on such reduced amount.

   Explanation 2.--Where the amount determined under sub-section (3) of Section 11-D is increased by the Commissioner (Appeals), the Appellate Tribunal or, as the case may be, the court, the interest payable thereon under sub-section (1) shall be on such increased amount.]