Extract of rate notification
[(iii) Services of goods transport agency (GTA) in relation to transportation of goods (including used household goods for personal use). Explanation.- ―goods transport agency‖ means any person who provides service in relation to transport of goods by road and issues consignment note, by whatever name called. 2.5 Provided that credit of input tax charged on goods and services used in supplying the service has not been taken [Please refer to Explanation no. (iv)] or 6 Provided that the goods transport agency opting to pay central tax @ 6% under this entry shall, thenceforth, be liable to pay central tax @ 6% on all the services of GTA supplied by it.]
Extract of RCM notification
In exercise of the powers conferred by sub-section (3) of section 9 of the Central Goods and Services Tax Act, 2017 (12 of 2017), the Central Government on the recommendations of the Council hereby notifies that on categories of supply of services mentioned in column (2) of the Table below, supplied by a person as specified in column (3) of the said Table, the whole of central tax leviable under section 9 of the said Central Goods and Services Tax Act, shall be paid on reverse charge basis by the recipient of the such services as specified in column (4) of the said Table:-
Therefore only either supplier or receiver is liable to pay tax.