(1) The tax payable by a dealer shall be calculated according to the following formula:
T- A -B
Where-
T means the tax payable by the dealer,
A means the output tax under this Act, and
B means the total amount of input tax credit allowable to the dealer under section 16 or section 17:
Provided that the tax payable by a dealer to whom the provisions of clause (cc) of sub-section (1) of Section 35 apply, shall be calculated at the rate of ten per centum of the taxable turnover