Article.246. Subject-matter of laws made by Parliament and by the Legislatures of States.-

(1) Notwithstanding anything in clauses (2) and (3), Parliament has exclusive power to make laws with respect to any of the matters enumerated in List I in the Seventh Schedule (in this Constitution referred to as the "Union List").

(2) Notwithstanding anything in clause (3), Parliament, and, subject to clause (1), the Legislature of any State also, have power to make laws with respect to any of the matters enumerated in List III in the Seventh Schedule (in this Constitution referred to as the "Concurrent List").

(3) Subject to clauses (1) and (2), the Legislature of any State has exclusive power to make laws for such State or any part thereof with respect to any of the matters enumerated in List II in the Seventh Schedule (in this Constitution referred to as the "State List").

(4) Parliament has power to make laws with respect to any matter for any part of the territory of India not included in a State notwithstanding that such matter is a matter enumerated in the State List. 

Article.265. Taxes not to be imposed save by authority of law.-

No tax shall be levied or collected except by authority of law. 

Schedule 7 - Union List (Entries Related to Taxes and Duties)

83. Duties of customs including export duties.

84. Duties of excise on tobacco and other goods manufactured or produced in India except-

       (a) alcoholic liquors for human consumption.

      (b) opium, Indian hemp and other narcotic drugs and narcotics,

      but including medicinal and toilet preparations containing alcohol or any substance included in sub-paragraph (b) of this entry.

85. Corporation tax.

86. Taxes on the capital value of the assets, exclusive of agricultural land, of individuals and companies; taxes on the capital of companies.

87. Estate duty in respect of property other than agricultural land.

88. Duties in respect of succession to property other than agricultural land.

89. Terminal taxes on goods or passengers, carried by railway, sea or air; taxes on railway fares and freights.

90. Taxes other than stamp duties on transactions in stock exchanges and futures markets.

91. Rates of stamp duty in respect of bills of exchange, cheques, promissory notes, bills of lading, letters of credit, policies of insurance, transfer of shares, debentures, proxies and receipts.

92. Taxes on the sale or purchase of newspapers and on advertisements published therein.

92A. Taxes on the sale or purchase of goods other than newspapers, where such sale or purchase takes place in the course of inter-State trade or commerce.

92B. Taxes on the consignment of goods (whether the consignment is to the person making it or to any other person), where such consignment takes place in the course of inter-State trade or commerce.

92C. Taxes on services.

 Schedule 7 - State List (Entries Related to Taxes and Duties)

46. Taxes on agricultural income.

47. Duties in respect of succession to agricultural land.

48. Estate duty in respect of agricultural land.

49. Taxes on lands and buildings.

50. Taxes on mineral rights subject to any limitations imposed by Parliament by law relating to mineral development.

51. Duties of excise on the following goods manufactured or produced in the State and countervailing duties at the same or lower rates on similar goods manufactured or produced elsewhere in India:-

        (a) alcoholic liquors for human consumption;

        (b) opium, Indian hemp and other narcotic drugs and narcotics,

       but not including medicinal and toilet preparations containing alcohol or any substance included in sub-paragraph (b) of this entry.

52. Taxes on the entry of goods into a local area for consumption, use or sale therein.

53. Taxes on the consumption or sale of electricity.

54. Taxes on the sale or purchase of goods other than newspapers, subject to the provisions of entry 92A of List I.

55. Taxes on advertisements other than advertisements published in the newspapers and advertisements broadcast by radio or television.

56. Taxes on goods and passengers carried by road or on inland waterways.

57. Taxes on vehicles, whether mechanically propelled or not, suitable for use on roads, including tramcars subject to the provisions of entry 35 of List III.

58. Taxes on animals and boats.

59. Tolls.

60. Taxes on professions, trades, callings and employments.

61. Capitation taxes.

62. Taxes on luxuries, including taxes on entertainments, amusements, betting and gambling 

Article.368. Power of Parliament to amend the Constitution and procedure therefor.-

(1) Notwithstanding anything in this Constitution, Parliament may in exercise of its constituent power amend by way of addition, variation or repeal any provision of this Constitution in accordance with the procedure laid down in this article.

 (2) An amendment of this Constitution may be initiated only by the introduction of a Bill for the purpose in either House of Parliament, and when the Bill is passed in each House by a majority of the total membership of that House and by a majority of not less than two-thirds of the members of that House present and voting, it, shall be presented to the President who shall give his assent to the Bill and thereupon the Constitution shall stand amended in accordance with the terms of the Bill:

Provided that if such amendment seeks to make any change in-

(a) article 54, article 55, article 73, article 162 or article 241, or

(b) Chapter IV of Part V, Chapter V of Part VI, or Chapter I of Part XI, or

(c) any of the Lists in the Seventh Schedule, or

(d) the representation of States in Parliament, or

(e) the provisions of this article,

the amendment shall also require to be ratified by the Legislatures of not less than one-half of the States by resolutions to that effect passed by those Legislatures before the Bill making provision for such amendment is presented to the President for assent.

(3) Nothing in article 13 shall apply to any amendment made under this article.

(4) No amendment of this Constitution (including the provisions of Part III) made or purporting to have been made under this article [whether before or after the commencement of section 55 of the Constitution (Forty-second Amendment) Act, 1976 shall be called in question in any court on any ground.

(5) For the removal of doubts, it is hereby declared that there shall be no limitation whatever on the constituent power of Parliament to amend by way of addition, variation or repeal the provisions of this Constitution under this article.