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Selling to a customer in another Indian state does not automatically mean you need GST registration in that destination state. The correct treatment depends on your registered places of business, the statutory place-of-supply rule for the transaction, the customer’s status, and whether goods physically move. Use this checklist before accepting an order, issuing an invoice, dispatching goods, and filing returns.
GST rules, notifications and portal procedures change. The figures and workflows below should be checked against the current CGST Act, rules, CBIC notifications and GST Portal instructions for your entity and transaction date.
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1. Confirm your registration position before selling interstate
Start with the legal entity that will make the supply, not merely the state where the customer is located. Map every place of business, warehouse, branch, office and other establishment used by that entity. Then identify the nature of the supply and whether any special registration rule applies.
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Do not assume registration is required in every customer state
The available CBIC registration material does not establish a universal rule that a seller must register in every destination state. Whether another registration is needed depends on factors such as where the supplier is established, where taxable activity is carried on, the type of supply, applicable thresholds and compulsory-registration provisions. Check the current law and your facts before expanding the registration footprint.
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SEZ registrations are a specific case
The CBIC registration rules describe separate registration for an SEZ unit or developer as a business vertical distinct from units outside the SEZ. If your business operates an SEZ unit, treat that as a separate compliance analysis rather than assuming the registration of a non-SEZ unit covers it.
Keep a registration master
- Legal name, PAN and GSTIN of the supplying entity.
- State and address of each registered place of business.
- Warehouses, fulfilment locations and dispatch points used in interstate orders.
- SEZ, export, branch-transfer or other special status relevant to the supply.
- The person responsible for approving a new registration or change in place of business.
2. Classify the supply and determine the place of supply
Classify the actual transaction before choosing IGST, CGST and SGST, or a special treatment. GST Portal invoice guidance describes an operational interstate supply as one where the place of supply differs from the supplier’s state. That description is useful for workflow, but it is not a substitute for the statutory place-of-supply rules.
Use the rule for the type of supply
| Question | Why it matters | Action |
|---|---|---|
| Are you supplying goods or services? | Goods and services can have different place-of-supply rules. | Apply the rule that matches the transaction, rather than copying the treatment from another order type. |
| Where is the supplier located? | The supplier’s state is one side of the interstate/intrastate analysis. | Use the location of the entity or establishment making the supply. |
| Where is the statutory place of supply? | A different state generally drives the interstate workflow. | Record the state and code determined under the applicable rule. |
| Is the recipient registered or unregistered? | Invoice details and GSTR-1 reporting differ. | Capture the recipient’s GSTIN when applicable and classify consumer sales correctly. |
| Is this an export, SEZ supply, import, event, property-related service or reverse-charge transaction? | Special provisions can override the ordinary pattern. | Route the transaction to a specialist review before invoicing. |
Goods, services and special cases need separate checks
Goods that are shipped, services supplied to a registered business, services connected with property or events, imports, exports, SEZ supplies and reverse-charge transactions may each follow different statutory rules. Do not infer the place of supply from the customer’s billing address alone. Document the facts used to reach the conclusion, including delivery location, recipient status and the establishment that arranged the supply.
3. Issue an invoice that supports the interstate treatment
For every invoice, reconcile the commercial order, tax classification and dispatch information. CBIC invoice rules list core particulars such as taxable value, tax rate and amount, reverse-charge status, and supplier signature or digital signature. For an interstate supply, show the place of supply with the State name and code.
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Invoice-field checklist
- Supplier’s legal name, address and GSTIN.
- Recipient name, address and GSTIN where required; for an unregistered customer, capture the details required by the applicable invoice rules.
- A consecutive invoice number and invoice date.
- Description and other goods or service particulars applicable to the transaction.
- Taxable value, applicable tax rate and tax amount.
- Place of supply, including the State name and code, for an interstate supply.
- Delivery address when it differs from the place of supply and the invoice rules require it.
- Reverse-charge indication and any SEZ, export or other special-treatment indicator that applies.
- Supplier signature or digital signature where required.
Do not select a tax rate merely because the buyer is in a particular state. Classification, exemptions and rates depend on the goods or service and the current tax schedules. Have an exception process for invoices where the customer’s address, delivery address, place of supply or tax treatment conflicts.
4. Check e-way bill requirements before goods move
If goods will move, perform the e-way bill check before the vehicle starts. The CBIC e-way bill rules page describes a ₹50,000 consignment-value threshold for covered movements and says the prescribed information must be furnished before movement, subject to the rule’s detailed provisions and exceptions. The threshold is not a complete dispatch decision: confirm current amendments, the reason for movement, valuation and any exception that applies.
What to prepare
- Confirm the consignment value using the applicable valuation approach.
- Identify the reason for movement: supply, a movement for another business reason, or inward supply from an unregistered person.
- Gather invoice, bill of supply or delivery challan details as applicable.
- Enter the required consignment and transport information in the authorised e-way bill workflow.
- Decide whether the registered person or the transporter will generate the document under the applicable rule.
- Give the person in charge of the conveyance the invoice, bill of supply or delivery challan and the e-way bill number or document.
Retain the e-way bill with the related invoice and dispatch record. If the route, vehicle, transporter or consignment changes, follow the current procedure for updating or cancelling the document rather than allowing the movement record to diverge from the shipment.
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Prepare the return from the same transaction-level data used for invoicing and dispatch. The GST Portal GSTR-1 guide covers B2B invoices, supplies attracting reverse charge, SEZ supplies, deemed exports, exports, credit and debit notes, and interstate supplies to unregistered consumers.
B2C Large threshold and its effective date
The guide states that, from the August 2024 return period, an interstate taxable outward supply to an unregistered consumer is reported as B2C Large when the invoice value is above ₹1 lakh. It also states that the earlier threshold was above ₹2.5 lakh through the July 2024 return period. Preserve the relevant return period when applying these figures; do not treat either threshold as timeless or as a complete list of all reporting limits.
| Return period | Threshold stated in the GST Portal guide | Use |
|---|---|---|
| Through July 2024 | Above ₹2.5 lakh | Apply only to the periods for which that earlier rule was in force. |
| August 2024 onward | Above ₹1 lakh | Use for the B2C Large interstate consumer classification stated in the guide, subject to current instructions. |
Reconcile before filing
- Export or freeze the sales ledger for the return period.
- Match each interstate invoice to the customer’s registration status and place-of-supply decision.
- Check credit notes, debit notes, amendments, cancellations and advances against the original invoice.
- Reconcile e-invoice data received from the Invoice Registration Portal and e-way bill records where relevant.
- Enter or import the records into the correct GSTR-1 tables.
- Generate and review the return summary, investigating differences before submission.
- File only after the authorised reviewer approves the final totals and classifications.
The GST Portal workflow allows records to be added or amended and then summarised for review. It warns that records cannot be edited or deleted after filing, so retain an approval log and a copy of the submitted data. Filing deadlines and taxpayer-frequency rules are not covered by the material used here; obtain the current calendar from the GST Portal rather than relying on a remembered date.
6. Determine whether e-invoicing applies
When a taxpayer is within the current e-invoicing mandate, invoice data received from the Invoice Registration Portal can populate GSTR-1, reducing duplicate entry. The applicable turnover threshold, effective dates, exclusions and transaction coverage must be checked against current notifications and the taxpayer’s status; they are not established by the material summarized here.
Operational controls for mandated taxpayers
- Confirm that the invoice is generated through the approved process before dispatch or reporting, as required for the transaction.
- Store the IRP acknowledgement and identifier with the accounting invoice.
- Prevent duplicate upload when the data has already flowed into GSTR-1.
- Investigate rejected, cancelled or amended e-invoices before the return is filed.
- Keep a manual fallback and escalation path for portal outages, following the current official procedure.
7. Maintain a complete audit trail
CBIC account-record rules require a registered person to maintain true and correct accounts and relevant documents. The listed records include invoices, bills of supply, delivery challans, credit and debit notes, payment vouchers, refund vouchers and e-way bills.
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- Customer order, contract and delivery instructions.
- Place-of-supply analysis and tax-rate approval.
- Final invoice and any e-invoice acknowledgement.
- Delivery challan, transporter details and e-way bill.
- Proof of delivery and payment, where relevant.
- Credit or debit notes, amendments and correspondence explaining corrections.
- GSTR-1 extract, reconciliation and filing acknowledgement.
The cited rules do not settle a single retention period for every business or sector. Confirm the applicable period and any additional books or records required for your activity, then apply a documented retention and access policy.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.8. A practical order-to-return checklist
Use this sequence for each new interstate sales channel, product line or fulfilment arrangement:
- Map the seller: select the legal entity and registered establishment making the supply.
- Classify the transaction: goods or services, recipient status, special status and reason for movement.
- Determine place of supply: apply the specific statutory rule and record the State name and code.
- Confirm registration: check whether the existing registration covers the activity and whether an SEZ or other separate registration rule applies.
- Approve tax treatment: verify the current rate, exemption, reverse-charge status and any export or SEZ condition.
- Generate the invoice: complete all required particulars and run an address/GSTIN consistency check.
- Run the e-invoice check: obtain IRP data when the current mandate applies.
- Run the e-way bill check: before goods move, test the ₹50,000 rule, exceptions and transport data against current requirements.
- Dispatch and retain documents: give the conveyance operator the required documents and link them to the order.
- Reconcile and report: map the invoice to the correct GSTR-1 table, include amendments and notes, review the summary and file.
9. Common failure points and fixes
Using the customer’s state as the only test
Symptom: The invoice applies interstate tax solely because the billing address is outside the seller’s state. Fix: Reperform the statutory place-of-supply analysis using the actual goods or service and delivery facts.
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Symptom: The vehicle leaves with an invoice but no valid e-way bill where one is required. Fix: Make the e-way bill check a dispatch-blocking control and verify the consignment value, reason for movement, transporter and document number.
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Reporting consumer sales under the wrong period threshold
Symptom: A B2C Large decision uses ₹2.5 lakh for a return period beginning August 2024, or applies ₹1 lakh to an earlier period. Fix: Store the return period beside the rule used and confirm the current portal instructions.
Filing before reconciliation
Symptom: GSTR-1 totals differ from sales, IRP or dispatch data, but the return is filed anyway. Fix: require a pre-filing exception report and remember that filed records cannot be edited or deleted through the ordinary workflow.
Assuming e-invoice coverage from memory
Symptom: A business applies an outdated turnover threshold or overlooks an exclusion. Fix: check the latest notification and taxpayer facts for each financial year and transaction type.
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