(1) (a) No person who is not a dealer registered under this Act, shall in respect of any sale or purchase made by or through him, realize from any person any amount by way of tax on sale or purchase of goods or any amount in lieu of tax on sale or purchase of goods by giving it different name or colour and no dealer registered under this Act, shall in respect of any sale or purchase made by or through him, realize from any person, other than a person to whom goods are sold by him, any amount by way of tax on sale or purchase of goods, or any amount in lieu of tax on sale or purchase of goods by giving it different name or colour;
(b) Where tax is payable on sale or purchase of goods on any turnover by a dealer including a commission agent or any person mentioned in clause (h) of section 2 registered under this Act, such dealer may recover an amount, equivalent to the amount of tax on sale or purchase of goods payable, from the person to whom any such goods is sold by him, whether on his own account or on behalf of his principal.
(2) Where –
(i) the amount of tax charged in tax invoice or sale invoice, as the case may be, exceeds the amount of tax payable; or
(ii) the amount of tax payable in respect of a sale exceeds the amount of tax charged in a tax invoice or a sale invoice, as the case may be, or
(iii) a tax invoice or sale invoice has been issued by the selling dealer to the purchasing dealer in respect of any goods but such goods or any part of such goods is returned or rejected by such purchasing dealer,
debit note and credit note, of the amount of tax involved in each case, shall be issued in accordance with provisions of sub-sections (14), (15) and (16) of section 21.
(3) Except as provided in section 34, no person shall deduct any amount as tax from the amount payable to the person selling the goods.
(4) No dealer shall include the amount of tax already paid on the purchase of goods in the sale price of such goods resold or goods manufactured by using such goods.