composition scheme

To opt for composition scheme, watch this video https://www.gst.gov.in/help/video/optcomposition

Keep in mind the following:

1. You must not be a service provider (except restaurant service).
2. You cant make interstate sales.
3. You cant take input credit on purchases.
4. You cant issue tax invoice. Instead you have to issue Bill of Supply (refer to Rule 49 of CGST rules).
5. You cant collect tax from your customers. Payment of composition tax is from your own pocket.
6. Provisions of reverse charge mechanism i.e sec 9(3), 9(4) is still applicable on you and for such input supplies, you will have to issue a tax invoice yourself. See section 31(3)(f) of CGST Act and proviso to Rule 49 of CGST rules.
7. You are only exempted from maintaining detailed record of inventory (Rule 56(2)) and details of tax payable, credit notes, debit notes, delivery challans (Rule 56(4)). 
8. You must maintain a record of purchases, sales, advance received/paid/adjusted, names and complete address of suppliers and customers, address of premises where goods are stored.