A bill of supply is the document a registered person issues instead of a tax invoice when no tax is charged on the sale. Two groups use it: composition dealers, who pay tax on their turnover at a flat rate and are not allowed to collect GST from buyers, and businesses selling exempt or nil-rated goods or services, such as fresh vegetables, unbranded loose grain or school education.
Because no tax is charged, the buyer cannot claim input tax credit on it. That is the main practical difference from a tax invoice.
A bill of supply still has to be numbered in a consecutive series, dated and signed, and it still goes into your returns: composition dealers report turnover in CMP-08 and GSTR-4, and regular taxpayers report exempt and nil-rated sales in GSTR-1 and GSTR-3B. Keeping the HSN on every line also makes the yearly HSN summary easy.
When to use it
- You are registered under the composition scheme (section 10) and make any sale.
- You are a regular taxpayer selling only exempt goods or services to a buyer.
- You sell a mix of taxable and exempt items to an unregistered buyer: you may then issue one invoice-cum-bill of supply for both (Rule 46A).
- Below ₹200 a separate bill of supply is not needed, on the same conditions as for tax invoices.