Who benefits most from composition scheme: Small retailers, kirana shops, small restaurants, local manufacturers, where most customers are B2C (end consumers). Since composition taxpayer cannot issue tax invoices, your B2B corporate clients cannot claim ITC, so if you primarily serve corporates, composition is not ideal. Tax payment under composition: No monthly tax computation on invoice-by-invoice basis. Just pay a fixed % of quarterly turnover. Pay via CMP-08 quarterly (by 18th of month after quarter). Annual return GSTR-4 by April 30. Much simpler than monthly GSTR-1 + GSTR-3B + quarterly GSTR-9. What composition taxpayer cannot do: Cannot collect GST from customer (tax comes from your own pocket on your turnover). Cannot issue a GST tax invoice, only "bill of supply" without GST. Cannot make inter-state sales. Cannot supply exempt goods without exiting.