GST registration can be obtained voluntarily by any person or entity irrespective of turnover. GST registration becomes mandatory if a person or entity sells goods or services beyond a certain turnover.

Service Providers: Any person or entity who provides service of more than Rs.20 lakhs in aggregate turnover in a year is required to obtain GST registration. In special category states, the GST turnover limit for service providers has been fixed at Rs.10 lakhs.

Goods Suppliers: As per notification No.10/2019 any person who is engaged in the exclusive supply of goods whose aggregate turnover crosses Rs.40 lakhs in a year is required to obtain GST registration. To be eligible for the Rs.40 lakhs turnover limit, the supplier must satisfy the following conditions:

• Should not be providing any services.
• The supplier should not be engaged in making intra-state (supplying goods within the same state) supplies in the States of Arunachal Pradesh, Manipur, Meghalaya, Mizoram, Nagaland, Puducherry, Sikkim, Telangana, Tripur and Uttarakhand.
• Should not be involved in the supply of ice cream, pan masala or tobacco.

If the above conditions are not met, the supplier of goods would be required to obtain GST registration when the turnover crosses Rs.20 lakhs and Rs.10 lakhs in special category states.

Special Category States: Under GST, the following are listed as special category states – Arunachal Pradesh, Assam, Jammu and Kashmir, Manipur, Meghalaya, Mizoram, Nagaland, Sikkim, Tripura, Himachal Pradesh and Uttarakhand. 

Aggregate Turnover: Aggregate turnover = (Taxable supplies + Exempt Supplies + Exports + Inter-State Supplies) – (Taxes + Value of Inward Supplies + Value of Supplies Taxable under Reverse Charge + Value of Non-Taxable Supplies). 

Aggregate turnover is calculated based on the PAN. Hence, even if one person has multiple places of business, it must be summed to arrive at the aggregate turnover.