GST & Tax
How to Claim GST Refund as an Exporter: RFD-01 Step-by-Step
ITC refund via RFD-01 and IGST auto-refund. Rule 89(4) formula, documents needed, portal filing steps, common rejections, deficiency memo trap, and Section 56 interest.
By Aaryan Kakani · · 10 min read
Key takeaways
Every rupee of GST paid on inputs used for exports is recoverable. The law is clear on this. Zero-rated supplies (exports) should not bear any embedded tax. But the refund process involves multiple forms, strict timelines, and a formula that trips up even experienced exporters. The result: refunds worth lakhs sit pending for months, creating a cash-flow drag that hits small and mid-size exporters the hardest.
This guide covers both refund routes available to Indian exporters in 2026. The ITC refund under LUT via Form GST RFD-01, and the automatic IGST refund through shipping bill matching. We walk through the eligibility, the calculation formula, the documents, the filing steps, and the most common reasons refunds get stuck or rejected. If you are an exporter who has filed an LUT for zero-rated exports or paid IGST on your shipments, this is your complete playbook.
Two Refund Routes for Exporters
Indian exporters can recover GST through one of two routes. You must choose one per shipment. You cannot claim both on the same consignment.
Route A
ITC Refund Under LUT
You export without paying IGST by filing a Letter of Undertaking. The GST you paid on domestic purchases (inputs, input services, capital goods) accumulates as Input Tax Credit. You claim this accumulated ITC back via Form GST RFD-01.
Best for: Exporters with significant domestic procurement and regular export volumes.
Route B
IGST Refund on Exports
You pay IGST on exports at the time of shipment. The refund is processed automatically by matching your shipping bill (from Customs/ICEGATE) with your GSTR-3B declaration. No separate refund application is needed.
Best for: Exporters who want automatic processing and have the working capital to pay IGST upfront.
ITC Refund via RFD-01: Step-by-Step
Eligibility
To claim ITC refund on exports, you must satisfy all of the following conditions:
- You have filed a valid LUT (Letter of Undertaking) for the financial year under Rule 96A of the CGST Rules.
- You exported goods or services without payment of IGST during the refund period.
- You have accumulated ITC from GST paid on domestic inputs (raw materials, input services, capital goods) used for making zero-rated supplies.
- You have filed all GSTR-1 and GSTR-3B returns for the refund period and all preceding periods.
Calculate Your Refund Amount: Rule 89(4)
The refund is not a straight claim of all your ITC. It is proportional to your export turnover. The formula under Rule 89(4) of the CGST Rules is:
Refund Amount = Turnover of zero-rated supply × Net ITC ÷ Adjusted Total Turnover
| Term | Definition |
|---|---|
| Turnover of zero-rated supply | Value of exports (goods + services) made without IGST payment during the refund period |
| Net ITC | Total ITC availed during the period, minus ITC on capital goods and any ITC reversed under Rules 42/43 |
| Adjusted Total Turnover | Total turnover during the period, minus the value of exempt supplies (other than zero-rated supplies) |
For example, if your zero-rated turnover for the month is Rs 40 lakh, your Net ITC is Rs 6 lakh, and your Adjusted Total Turnover is Rs 60 lakh, the refund amount = 40,00,000 × 6,00,000 ÷ 60,00,000 = Rs 4,00,000 .
Documents Needed
- Statement 3: Invoice-wise details of all export invoices for the refund period (invoice number, date, IGST amount if any, shipping bill number, port code).
- Statement 3A: Computation sheet showing the Rule 89(4) calculation for the refund amount.
- CA/CMA certificate: Mandatory if the refund claim exceeds Rs 2 lakh. The certificate must confirm the ITC claimed has not been carried forward in the next period's return.
- Bank Realisation Certificate (BRC): Copies of BRCs or FIRCs for all export invoices included in the claim. If BRC is not yet available, a self-declaration on company letterhead will suffice for provisional refund.
- Shipping bill copies: All shipping bills corresponding to the export invoices in Statement 3.
- Bank statement: Showing receipt of export proceeds (matching the BRC/FIRC amounts).
Filing on the GST Portal
Log in to the GST portal
Go to gst.gov.in and log in with your GSTIN credentials.
Navigate to Refunds
Go to Services → Refunds → Application for Refund . Select the relevant tax period (month or quarter).
Select refund type
Choose Refund of ITC on export of goods/services without payment of tax . This is the LUT-based ITC refund option.
Fill Statement 3
Enter invoice-wise details of all export invoices for the period: invoice number, invoice date, shipping bill number, shipping bill date, port code, and FOB value in INR. For services exports, enter the invoice details and BRC/FIRC number instead of shipping bill.
Fill Statement 3A
The system auto-populates some fields from your GSTR-1 and GSTR-3B. Verify the turnover of zero-rated supply, Net ITC, and Adjusted Total Turnover. The refund amount is computed automatically using the Rule 89(4) formula. Cross-check the calculated amount against your own workings.
Upload supporting documents
Attach the CA/CMA certificate (if refund exceeds Rs 2 lakh), bank statements, BRC copies, and any other supporting documents. Maximum file size is typically 2 MB per attachment.
Submit and note ARN
Submit the application using DSC or EVC. An Acknowledgement Reference Number (ARN) is generated. Save this. You will need it to track refund status.
Refund Timeline
| Stage | Timeline | What happens |
|---|---|---|
| Provisional refund | Within 15 days | 90% of the claimed amount is disbursed directly to your bank account (Section 54(6) of CGST Act) |
| Final processing | Within 60 days | The GST officer verifies documents, checks ITC eligibility, and releases the remaining 10% |
| Interest liability | After 60 days | If the refund is delayed beyond 60 days from application date, you are entitled to 6% interest under Section 56 |
IGST Refund on Exports
If you export by paying IGST (Route B), the refund is processed automatically. No RFD-01 filing is required. The system works by matching data from two sources:
- GSTR-1 Table 6A: Your export invoice details (invoice number, shipping bill number, port code, IGST amount) as declared in your monthly/quarterly GSTR-1 return.
- ICEGATE shipping bill data: The shipping bill details transmitted by Customs to the GST system after goods clear the port.
When GSTR-1 Table 6A data matches the ICEGATE shipping bill data and the corresponding IGST liability has been discharged in GSTR-3B, the system generates a "scroll". A payment instruction to credit the refund to your bank account. Check the scroll status on ICEGATE under Track Scroll Status.
Common Blockers for IGST Refund
| Blocker | Why it happens | How to fix |
|---|---|---|
| GSTR-1 Table 6A errors | Shipping bill number, port code, or invoice value entered incorrectly in GSTR-1 | File an amendment in the next GSTR-1 return correcting Table 6A entries |
| Shipping bill number mismatch | The SB number in GSTR-1 does not match what Customs transmitted to ICEGATE | Verify SB number from your CHA/customs broker and amend GSTR-1 |
| IGST amount mismatch | IGST declared in GSTR-1 differs from IGST shown on the shipping bill | Reconcile the exact IGST amount and file amendment; ensure GSTR-3B liability matches |
| Scroll date delay | ICEGATE processes scrolls in batches; backlogs cause delays of weeks to months | Check ICEGATE scroll status regularly; escalate through your jurisdictional commissioner if delayed beyond 60 days |
Common Rejection Reasons and Fixes
Whether you file via RFD-01 or rely on IGST auto-refund, these are the issues that cause the most rejections and delays:
GSTR-1 and GSTR-3B mismatch
The export turnover declared in GSTR-1 does not match the zero-rated turnover in GSTR-3B. This is the single most common reason for refund rejection.
Fix: Reconcile GSTR-1 and GSTR-3B before filing the refund. If there is a mismatch, file an amendment in GSTR-1 for the relevant period and revise GSTR-3B if needed. Ensure cumulative totals match across both returns.
Wrong GSTIN on shipping bill
Some exporters have multiple GSTINs (one per state). If the shipping bill carries a different GSTIN than the one used in the GSTR-1 filing, the matching fails.
Fix: Ensure your CHA/customs broker uses the correct GSTIN for the state from which you are filing the refund. Cross-check before the goods leave the port. Post-shipment corrections require an amendment with Customs, which can take weeks.
BRC not available
For ITC refunds, BRC (Bank Realisation Certificate) copies are required to prove that export proceeds have been received. If the buyer has not paid yet or the BRC is pending with the bank, the refund claim may be rejected.
Fix: For provisional refund (90%), a self-declaration on company letterhead confirming intent to realise export proceeds is usually accepted. For final settlement, you will need the actual BRC. Follow up with your AD bank to expedite BRC issuance.
ITC reversal issues
If you have reversed ITC under Rules 42/43 (for common inputs used for both taxable and exempt supplies), but the reversal is not correctly reflected in your GSTR-3B, the Net ITC figure in Statement 3A will be wrong.
Fix: Maintain a monthly ITC reversal register. Ensure the Net ITC in Statement 3A matches your GSTR-3B Table 4 exactly. Discrepancies here are a red flag for the officer and will trigger a deficiency memo.
The Deficiency Memo Trap
A deficiency memo (Form GST RFD-03) is not a rejection. It is a notice from the GST officer that your refund application has gaps or errors. Think of it as a "fix and resubmit" notice. But here is where many exporters lose their refunds: you have exactly 15 days from the date of the deficiency memo to respond with corrected information.
If you do not respond within 15 days, your application is deemed to have been "never filed." The ARN is invalidated. You must start the entire process again. New application, new ARN, new timeline. The 15-day clock is strict and extensions are rarely granted.
How to respond to a deficiency memo
- Read the memo carefully. It lists specific deficiencies (missing documents, calculation errors, mismatched figures).
- Prepare the corrected documents or revised Statement 3/3A addressing each deficiency point.
- Log in to the GST portal → Services → Refunds → My Saved/Filed Applications → find the ARN → Reply to Deficiency Memo.
- Upload the corrected documents and submit within 15 days. The application is then treated as a fresh filing from the date of your response.
Interest on Delayed Refund
Under Section 56 of the CGST Act, if the government does not process your refund within 60 days of receiving a complete application, you are entitled to interest at 6% per annum on the refund amount for the period of delay.
The 60-day clock starts from the date the application is acknowledged (date of ARN generation), not the date of filing. If a deficiency memo was issued and you responded, the clock restarts from the date of your response, since the application is treated as a fresh filing from that date.
Tips for Faster Processing
Based on what we see across hundreds of exporter refund claims, here are the practices that consistently result in faster disbursement:
- File monthly, not quarterly. Even if you are a QRMP (quarterly) filer, you can file refund claims monthly. Smaller claims get processed faster and reduce your cash-flow gap.
- Reconcile before filing. Run a three-way reconciliation between GSTR-1, GSTR-3B, and your shipping bills before submitting RFD-01. Mismatches are the number one cause of deficiency memos.
- Get BRCs in advance. Do not wait until refund filing time to request BRCs from your AD bank. Start the process as soon as export proceeds are received. BRC issuance itself can take 2-4 weeks at some banks.
- Attach a cover letter. A one-page summary listing the refund period, number of invoices, total claim amount, and a checklist of attached documents makes the officer's job easier. Claims with clear documentation get processed first.
- Respond to deficiency memos within 5 days. You have 15 days, but responding in 5 keeps your claim near the top of the processing queue. Delays push you behind newer applications.
- Use a single GSTIN for all exports. If you have registrations in multiple states, consolidate your exports under one GSTIN where possible. This simplifies ITC accumulation and refund calculation.
- Keep your [LUT](/resources/gst-exporters) renewed. An expired LUT means your exports are treated as regular taxable supplies. File the LUT renewal before March 31 every year without fail.
Frequently Asked Questions
How long does it take to get a GST refund for exporters in India?
For ITC refunds filed via RFD-01, the provisional refund (90% of the claimed amount) should be disbursed within 15 days of acknowledgement. The remaining 10% is released after full verification within 60 days. For IGST refunds, the timeline depends on ICEGATE scroll processing. Typically 2-8 weeks after GSTR-1 and shipping bill matching is complete. Delays are most commonly caused by GSTR-1 Table 6A errors or shipping bill mismatches. Read more about GST refund delays and what to do.
What is the formula for calculating ITC refund amount for exporters under Rule 89(4)?
The refund amount = Turnover of zero-rated supply × Net ITC ÷ Adjusted Total Turnover. "Turnover of zero-rated supply" is the value of exports during the refund period. "Net ITC" is total ITC availed minus ITC on capital goods and reversals. "Adjusted Total Turnover" is total turnover minus exempt supplies (other than zero-rated). This formula ensures the refund is proportional to your export turnover relative to total business.
Can I claim both ITC refund and IGST refund on exports simultaneously?
No. You must choose one route per shipment. If you export under LUT without paying IGST, claim ITC refund via RFD-01. If you pay IGST on exports, the refund processes automatically through ICEGATE scroll matching. Different shipments within the same tax period can use different routes. See our IGST refund vs LUT comparison for help choosing.
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