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This guide explains the eligibility test, the two refund routes, and the records relevant to a claim. GST rules can change, so check the law and portal requirements applicable to the transaction and refund period before filing. The legal sources summarized here were checked on October 7, 2026; they do not establish a guaranteed refund amount or processing date for an individual claim.
When does a clinical research service count as an export?
Under the IGST Act, a service is an “export of services” only when all five conditions are met for the supply:
- The supplier of the service is located in India.
- The recipient of the service is located outside India.
- The place of supply is outside India.
- Payment is received in convertible foreign exchange, or in Indian rupees where the Reserve Bank of India permits it.
- The supplier and recipient are not merely establishments of a distinct person under the Act’s explanation to the definition.
Services meeting the statutory definition are zero-rated under section 16 of the IGST Act. “Zero-rated” is the relevant GST treatment; it does not mean that every transaction invoiced to a foreign entity automatically qualifies, or that every purchase-related tax is refundable.
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Identify the real recipient and service
For a clinical research organization (CRO), start with the contract, statement of work, amendments, and deliverables. Identify who contracted for the work and receives it, who directs or benefits from it, and whether an Indian affiliate is involved in the supply. Consider the actual service being delivered—such as trial management, monitoring, data work, laboratory services, pharmacovigilance, or other research support—rather than relying on the study’s international character or the customer’s billing address.
The official materials summarized for this guide do not classify every clinical-research service category as an export. The applicable place-of-supply and recipient analysis must be made for the particular supply; the category name alone does not settle it.
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Check related-company arrangements carefully
A corporate relationship by itself should not be treated as an automatic bar. CBIC Circular 161/17/2021-GST clarifies the distinct-person condition for certain supplies by Indian subsidiaries, sister concerns, or group concerns to a foreign company. The entities’ legal relationship and the particular contract still need to be examined against the statutory test.
Choose between the two refund routes
For an eligible zero-rated service, the broad routes are export without payment of IGST under an LUT or bond, or export on payment of IGST followed by a refund claim. Neither route is universally better; the suitable option depends on the transaction, applicable restrictions, eligible credits, and the exporter’s ability to fund tax while awaiting a refund.
| Route | How it works | What to assess |
|---|---|---|
| LUT or bond, without payment of IGST | Make the eligible zero-rated supply without paying IGST upfront, then claim refund of eligible unutilized ITC. The amount is determined under the applicable Rule 89 formula and restrictions. | Cash flow; eligible accumulated ITC; purchase and invoice records; and the rule’s service-turnover calculation. |
| Pay IGST on the zero-rated supply | Pay IGST on the eligible supply and claim refund of the IGST paid, subject to the conditions and safeguards applicable to the transaction. | Capacity to fund the IGST pending refund; eligibility and restrictions for this method; and reconciliation of tax paid with export invoices and returns. |
Assess the route against the law applicable to the transaction period, not just a preferred cash-flow outcome. The available official guidance establishes both broad routes but does not support a fixed current refund-processing promise for a particular service exporter.
How a service-export refund claim is made
The refund rules direct claims through the common GST portal in FORM GST RFD-01. For service-export claims, the rules identify export invoice numbers and dates and relevant Bank Realisation Certificate (BRC) or Foreign Inward Remittance Certificate (FIRC) details as supporting information. CBIC Circular 125/44/2019-GST describes the electronic refund process and remittance-evidence requirement for service exports. Confirm the current portal instructions and documentary requirements for the claim period before submission.
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Service exporters should follow the applicable RFD-01 process and current GST portal instructions. Do not substitute a goods-export workflow based on shipping bills for the service-export claim process.
How the unutilized-ITC refund is calculated
A refund under the LUT or bond route is not simply reimbursement of every tax amount paid on purchases. For a claim of unutilized ITC on zero-rated exports without payment of tax, Rule 89’s formula applies, along with its eligibility and turnover conditions.
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Among the calculation details, the rule’s definition of zero-rated service turnover takes account of payments received during the relevant period and completed services for which payment was received in advance. It reduces that amount by advances for services not completed during the period. The eligible “Net ITC,” adjusted total turnover, and other rule conditions also affect the result. Accordingly, the invoice value alone is not enough to determine a refund, and the amount should be calculated for the relevant period using the applicable rule.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Records to reconcile before filing
Build the claim from a consistent set of transaction, return, credit, and payment records. In particular, reconcile:
- The contract, statement of work, amendments, and evidence of the service and its deliverables.
- Export invoices and their reporting in the relevant GST returns.
- BRC/FIRC details or other remittance evidence relevant to the service-export claim.
- Eligible input and input-service credit records and the period’s turnover figures used in the Rule 89 calculation.
- The refund period and the route used for the zero-rated supply.
Keep supporting records and match the claim figures to the underlying records. A mismatch among the contract, invoice, return reporting, remittance evidence, or ITC calculation can complicate substantiation of the claim.
Practical eligibility and filing checklist
- Confirm the Indian supplier’s GST registration and identify the rules applicable to the transaction period.
- Review the contract, statement of work, amendments, and deliverables to determine the actual service and recipient.
- Test each export condition: supplier location, recipient location, place of supply, qualifying payment, and the distinct-person condition.
- Select the LUT/bond route without IGST or the payment-of-IGST route after checking applicable law, restrictions, eligible ITC, and cash-flow needs.
- Reconcile export invoices and return reporting with BRC/FIRC evidence and eligible ITC records.
- Prepare the appropriate electronic refund application and retain the supporting records.
- For an uncertain clinical research contract or disputed classification, consult an Indian GST professional familiar with cross-border services.
No general refund date should be assumed from an older FAQ or a broad statement about processing times. The actual claim’s facts and current requirements govern.
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