Section 13(7) in The Integrated Goods and Services Tax Act, 2017
(7)Where the services referred to in sub-section (3) or sub-section (4) or sub-section (5) are supplied in more than one State or Union territory, the place of supply of such services shall be taken as being in each of the respective States or Union territories and the value of such supplies specific to each State or Union territory shall be in proportion to the value for services separately collected or determined in terms of the contract or agreement entered into in this regard or, in the absence of such contract or agreement, on such other basis as may be prescribed.
