The interest payable under this Act shall be deemed to be tax due under this Act.

Power to withhold refund in certain cases:

1. (1) Where an order giving rise to refund is the subject matter of an appeal or further proceeding or where any other proceeding in order this act is pending, and Commissioner is of the opinion that the grant of such refund is likely to adversely affect the revenue and that it may not be possible to recover the amount later, the Commissioner may, withhold the refund till such time as he may determine.
2. (2) Where the refund is withheld under sub-section (1), the dealer shall be entitled to interest as provided under sub-section(l) of Section 50 if, as a result of the appeal or further proceeding or any other proceeding, he becomes entitled to the refund.