What Is a Bill of Supply?
In GST, not every sale document looks the same.
When a business charges GST on a taxable supply, it issues a tax invoice. But that changes in certain situations. When a seller does not charge GST on the outward supply, the correct document to issue is generally a bill of supply instead.
A bill of supply is used by a registered person supplying exempt goods or services, and also by a person paying tax under the composition scheme. In both cases, the seller does not issue a normal tax invoice for that outward supply.
A tax invoice shows tax charged. A bill of supply does not, and that distinction matters for both compliance and record-keeping.
When Is a Bill of Supply Issued?
Businesses issue a bill of supply in two main situations.
| Situation | Why a bill of supply is used |
| Exempt supply | GST does not apply to that outward supply |
| Composition scheme | The supplier cannot issue a tax invoice or collect tax in the normal way |
The CGST Act links bill of supply issuance directly to exempt supplies and composition taxpayers. GST portal guidance for composition taxpayers also specifies that they must issue a bill of supply in the prescribed manner. Therefore, if a business falls under either of those categories, a bill of supply is the correct document, not a tax invoice.
What Details Does a Bill of Supply Contain?
Rule 49 of the CGST Rules prescribes the required particulars. A bill of supply generally includes:
- Supplier name, address, and GSTIN
- A consecutive serial number
- Date of issue
- Recipient name, address, and GSTIN or UIN, if registered
- HSN code for goods or accounting code for services, where applicable
- Description of goods or services
- Value of supply after discount or abatement, if any
- Signature or digital signature of the supplier or authorised representative
The document still records the sale completely, even though it does not follow the tax invoice format.
A Simple Example
Consider a small business under the composition scheme supplying goods worth ₹12,000.
| Field | Example |
| Document type | Bill of Supply |
| Supplier | ABC Traders |
| GSTIN | 24ABCDE1234F1Z5 |
| Date | 09 March 2026 |
| Goods supplied | Kitchen storage containers |
| Value of supply | ₹12,000 |
In a normal tax invoice, the amount would show a GST breakup. In a bill of supply, the supplier does not show GST charged on the outward supply in the same way. The total value reflects the supply amount without a separate tax line, because the GST treatment of that supply does not require one.
Bill of Supply vs Tax Invoice
Many businesses confuse these two documents. The table below keeps the difference direct.
| Basis | Bill of Supply | Tax Invoice |
| Used for | Exempt supply or composition scheme cases | Taxable supply |
| GST shown separately | Generally no | Yes |
| Input tax credit flow | Not applicable in the same way | Relevant for normal taxable invoicing |
| Legal basis | Section 31(3)(c), Rule 49 | Section 31, Rule 46 |
The legal distinction matters because the document type depends on the nature of supply and the supplier’s GST registration status. Using the wrong document creates confusion in accounting, customer communication, and GST records.
Why Businesses Should Get It Right
Issuing the wrong document is not just a formatting problem, it has compliance consequences.
If a supplier who should issue a bill of supply raises a tax invoice instead, the billing trail becomes inconsistent and harder to reconcile during return filing. Conversely, if a supplier issuing taxable supplies uses a bill of supply, the buyer cannot claim Input Tax Credit on that transaction.
For these reasons, businesses align their invoicing software with their GST category and the nature of each supply. When the system generates the right document from the start, GST billing stays accurate and records stay easier to manage.
Key Takeaways
A bill of supply is the GST document used when a normal tax invoice does not apply. In practice, that means exempt outward supplies or supplies made by a composition taxpayer. The document still records the transaction properly, but it follows Rule 49 of the CGST Rules rather than the tax invoice format under Rule 46.
The main point for businesses is straightforward, the document type must match the GST treatment of the supply. When businesses handle this correctly, billing stays compliant and GST records remain clean for filing and audit.