GST invoice checklist for Indian MSMEs and small businesses
Know when to issue a GST tax invoice or bill of supply, which Rule 46 details to check, and how to keep invoice numbering and records consistent.
In this guide
First decide which document your GST status requires
A GST tax invoice is for a registered supplier making a taxable supply when GST law requires that invoice. A supplier who is not registered must not describe a document as a GST tax invoice or collect GST as tax. A registered composition taxpayer or a supplier of exempt goods or services may need a bill of supply instead. Confirm your registration, supply type and current exceptions with CBIC or a qualified tax professional before using a template.
Do not add GST to a commercial invoice unless you are entitled to charge it
A quotation, receipt or commercial invoice can record a sale, but it does not itself make you registered or authorise you to collect tax. If you are not registered, issue a business document that accurately states the amount due without showing GST as tax. If registration or liability is unclear, pause the template change and get advice.
Distinguish a tax invoice from a bill of supply
For a taxable supply, a registered supplier generally uses a tax invoice with the applicable tax details. A bill of supply is used in specified situations such as exempt supplies and composition levy. Mixed supplies, exports, reverse charge and special categories can have additional rules, so do not apply one template to every transaction without checking.
Check e-invoice applicability separately
E-invoicing rules apply only to notified classes of registered persons and depend on current thresholds, exclusions and notifications. Do not rely on an old turnover figure from a blog or software screen. Check the current CBIC notification and official e-invoice portal for your entity and transaction before deciding whether an IRN or signed QR code is required.
Use a Rule 46 review before issuing each tax invoice
CBIC's Rule 46 checklist includes supplier identity, a unique invoice number and date, recipient details where required, a clear supply description, value and tax information. Build these checks into your billing software or spreadsheet and review the first invoice for each new customer, product and supply route.
Confirm supplier and invoice identity
Check the supplier's legal name, address and GSTIN; use a consecutive serial number unique for the financial year and the issue date. Define who creates invoice numbers and how voided or corrected documents are recorded so numbers are not silently reused.
Describe what was supplied and how it is measured
Include the recipient's name, address and GSTIN or UIN where applicable, the delivery address where required, a plain description, quantity and unit for goods, and the relevant HSN or SAC details. A description such as “services” may be too vague to reconcile with an order or support a later query.
Check taxable value, rate, tax amount and supply location
Show the taxable value and the applicable tax rate and amount, with the correct tax components for the transaction. For an interstate supply, Rule 46 requires the place of supply and state name. Confirm discounts, freight, advances, currency and rounding are treated consistently with the applicable GST rules.
Add transaction-specific disclosures only when they apply
Check reverse-charge wording, export or special-supply details, delivery address, signature or digital signature, and any e-invoice reference required for your case. Rules can differ by goods, services, recipient and transaction type; ask an accountant to configure a reusable template rather than copying a competitor's invoice.
| Field | Checked | Evidence or follow-up |
|---|---|---|
| Correct supplier GSTIN and invoice series | ||
| Customer name, address and GSTIN if applicable | ||
| Description, quantity, HSN/SAC and delivery details | ||
| Taxable value, rate, tax split and total | ||
| Place of supply, reverse charge or e-invoice fields |
Keep invoices aligned with orders, books and returns
Use one controlled invoice series and correction process
Keep draft, issued, cancelled, credit-note and debit-note records linked to the original sale. If an issued document contains a material error, ask your tax adviser whether a credit note, debit note, amendment or other correction is required; do not silently overwrite an invoice already sent to a customer.
Reconcile sales documents with GST and accounting records
Match invoices to purchase orders, delivery or service evidence, payments, refunds, credit notes and the relevant return data. Keep accounting records and supporting documents in a searchable, access-controlled folder. CBIC's recordkeeping rules describe books and accounts obligations for registered persons; the records needed depend on your business and transactions.
Protect customer and tax information
Restrict access to GST credentials, customer tax identifiers, invoices and e-invoice credentials. Use separate staff permissions, multi-factor authentication where available and backups. Share an invoice through the expected business channel and verify any request to change a customer's GSTIN, delivery address or payment account.
GST invoice questions
Can an unregistered business issue a GST tax invoice?
No. An unregistered person must not issue a document represented as a GST tax invoice or collect GST as tax. Use a commercial invoice or receipt that accurately records the sale without a GST tax charge, and check whether registration is required for your business.
What is the difference between a tax invoice and a bill of supply?
A tax invoice records a taxable supply by a registered supplier and shows the applicable tax details. A bill of supply is used in specified cases such as exempt supplies or the composition scheme and does not collect GST as tax. Confirm the treatment for your transaction with current CBIC rules.
Is there one mandatory GST invoice design?
The required particulars matter more than a universal visual layout. Your format should include the details required for your supply and any applicable e-invoice fields. A clean, readable template helps customers and bookkeepers, but visual design cannot replace the legal particulars.
Where can I confirm the current e-invoice threshold?
Check the latest CBIC notification and official e-invoice portal for the class of taxpayer and transaction involved. Thresholds and exclusions can change, so confirm them for the period in which you issue the invoice rather than relying on a static article.
Related practical guides
Related issue guides
Sources and publication record
Draft prepared 26 September 2026; project-team editorial review pending · Sources checked .
- GST tax invoice, credit and debit note rulesCentral Board of Indirect Taxes and Customs, Government of India
- Central GST Rules, Rule 56: maintenance of accounts by registered personsCentral Board of Indirect Taxes and Customs, Government of India