The Central Goods and Services Act, 2017 (CGST Act)
Section 23 – Persons not liable for registration.
(1) The following persons shall not be liable to registration namely:––
(a) any person engaged exclusively in the business of supplying goods or services or both that are not liable to tax or wholly exempt from tax under this Act or under the Integrated Goods and Services Tax Act.
(b) an agriculturist, to the extent of supply of produce out of cultivation of land.
(2) The Government may on the recommendations of the Council by notification specify the category of persons who may be exempted from obtaining registration under this Act.