(1) Subject to the provisions of this Act, every dealer-

(a) who is an importer of goods; or

(b) who is a manufacturer of goods and whose annual turnover exceeds rupees five lacs; or

(c) whose annual turnover exceeds rupees ten lacs,

shall be liable to pay tax under this Act.

(2) Notwithstanding anything contained in sub-section (1) a dealer other than those specified in clause (a) of sub-section (1) or the dealer or class of dealers as may be notified by the State Government, who purchases goods from a registered dealer of the State and sells, such goods or goods manufactured from such goods within the State, may opt for payment of tax on his turnover excluding the turnover of the goods specified in Schedule I, at the rate as may be notified under sub-section (3) of section 4, subject to the condition that annual turnover of such dealer does not exceed-

(i) rupees fifty lacs, in case of a dealer specified in clause (b) of sub-section (1); and

(ii) rupees seventy five lacs, in case of other dealers.

(3) Notwithstanding anything contained in sub-sections (1) and (2) every casual trader shall be liable to pay tax under this Act.

(4) Notwithstanding anything contained in sub-sections (1) and (2) every person, other than a causal trader or a registered dealer, who carries on business temporarily for a period not exceeding one hundred twenty days in a year, shall be liable to pay tax under this Act in the manner as may be prescribed.

(5) A dealer registered under the Central Sales Tax Act, 1956 (Central Act No. 74 of 1956) who is not liable to pay tax under sub-sections (1) to (4), shall nevertheless be liable to pay tax in accordance with the provisions of this Act.

(6) Notwithstanding anything contained in this Act, a dealer registered under this Act shall so long as his certificate of registration remains in force, be liable to pay tax, irrespective of his turnover.