What is the maximum voting weightage that can be held by a member of the Goods and Services Tax Council?
The maximum voting weightage that can be held by a member of the Goods and Services Tax Council is not explicitly mentioned in the given context. However, it is mentioned that every decision of the Goods and Services Tax Council shall be taken at a meeting, by a majority of not less than three-fourths of the weighted votes of the members present and voting, in accordance with the following principles:

(a) the vote of the Central Government shall have a weightage of one-third of the total votes cast, and

(b) the votes of all the State Governments taken together shall have a weightage of two-thirds of the total votes cast.