Every registered person (other than a registered person availing the benefit of composition or a registered person supplying exempted goods or services) supplying goods or services or both is required to issue ‘tax invoice’. Invoice should be issued in triplicate in case of supply of goods. The original copy is meant for buyer, duplicate for transporter and triplicate copy for record of the seller. A registered person under composition scheme or supplying exempted goods or services shall issue a bill of supply instead of a tax invoice.
(FAQ 24: MSME)