What is the late fee for delayed GSTR-1 filing?

Late fee for GSTR-1 is ₹50 per day for nil returns and ₹100 per day for returns with tax liability, subject to prescribed maximum caps.

Export Import GST Return Filing 2026 – Complete Guide to GSTR-1, GSTR-3B, GSTR-2B & Refund Reconciliation

Step-by-step guide covering GST return filing for exporters and importers — reporting exports in GSTR-1 Table 6A and 6B, claiming import ITC through GSTR-2B, filing GSTR-3B, annual return GSTR-9, refund filing through RFD-01, reconciliation between ICEGATE and GST portal, and common filing errors.

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Quick Summary – Export Import GST Return Filing

Key Returns for Exporters: GSTR-1 (Table 6A and 6B), GSTR-3B, GSTR-9, and refund through RFD-01.
Key Returns for Importers: GSTR-3B (ITC claim), GSTR-2B (auto-populated import ITC), and GSTR-9.
GSTR-1 Table 6A: Reports exports with payment of IGST.
GSTR-1 Table 6B: Reports exports without payment of IGST (under LUT/Bond).
Import ITC Source: Bill of Entry data flows automatically into GSTR-2B.
Refund Filing: Form GST RFD-01 on the GST portal for refund of unutilized ITC or IGST paid on exports.
Refund Timeline: 90% provisional refund within 7 days; full refund within 60 days.
Government Fee: Nil — no government fee for filing returns or refund applications.
Late Fee: Applicable for delayed GSTR-1 and GSTR-3B filing, capped at prescribed limits.
Reconciliation Required: Shipping bill data (ICEGATE) must match GSTR-1 data for refund to process smoothly.

Takeaway: Export and import GST return filing is not just about compliance — it is the trigger for your refund. Get the data right at filing, and the refund flows automatically.

1. Introduction – Why GST Return Filing Matters for Trade

For a domestic business, GST return filing is a monthly compliance ritual. For an exporter or importer, it is something more — it is the trigger that releases money back into the business.

Every export invoice you file must be reported in GSTR-1. Every shipping bill you generate on ICEGATE must match that GSTR-1 entry. Every rupee of IGST you pay on imports must appear in GSTR-2B before you can claim it as credit. The entire refund process depends on this chain of data being accurate and consistent.

A mismatch between the shipping bill and GSTR-1 is the single largest cause of refund delays in India. A missing BoE record in GSTR-2B blocks your import ITC. An incorrect Table selection in GSTR-1 makes your export look like a domestic sale.

This guide covers the complete return filing framework for exporters and importers — which returns to file, what to report in each table, how the ICEGATE and GST data flows work, and how to claim refunds without delays.

Takeaway: Your GST returns are not just compliance documents — they are your refund application. File them with the same precision you apply to your shipping bills and bills of entry.

2. GST Returns for Exporters and Importers – At a Glance

Here is the complete list of returns relevant to international trade, along with who must file them and why.

Return	Frequency	Who Files	Purpose
GSTR-1	Monthly / Quarterly	All exporters	Report export invoices in Table 6A / 6B
GSTR-3B	Monthly	All registered taxpayers	Disclose export turnover, import ITC, and tax liability
GSTR-2B	Monthly (auto)	Auto-generated	Contains import ITC from Bill of Entry data
GSTR-9	Annual	Taxpayers above threshold	Annual reconciliation of exports, imports, and ITC
GSTR-9C	Annual	Taxpayers above higher threshold	Reconciliation statement certified by CA/CMA
RFD-01	As needed	Exporters claiming refund	Application for refund of unutilized ITC or IGST paid
RFD-11	Annual	Exporters under LUT	Letter of Undertaking for export without IGST
GSTR-4 / CMP-08	Quarterly / Annual	Composition dealers	Not applicable to most exporters

Due Dates at a Glance

Return	Due Date
GSTR-1 (Monthly)	11th of the following month
GSTR-1 (Quarterly)	13th of the month following the quarter
GSTR-3B (Monthly)	20th of the following month
GSTR-9	31 December of the following financial year
LUT (RFD-11)	Before 31 March of the preceding financial year

Takeaway: Mark these due dates on your compliance calendar. Late filing triggers interest and late fees, and can delay your refund by months.

3. GSTR-1 for Exporters – Reporting in Table 6A and 6B

GSTR-1 is the outward supplies return. For exporters, the most important section is Table 6, which is dedicated to exports. Getting this table right is the first and most critical step for your refund.

Table 6A – Exports with Payment of IGST

Use Table 6A when you have exported by paying IGST on the export invoice. This table reports the following fields:

📌 Export Type: "With Payment of IGST"
📌 Invoice Number and Date: Exactly as per the export invoice
📌 Shipping Bill Number and Date: From the ICEGATE record
📌 Port Code: The Customs port of export
📌 Taxable Value: FOB value in INR
📌 IGST Amount: The IGST charged and paid on the invoice
📌 Buyer Details: Name and address of the foreign buyer

Table 6B – Exports without Payment of IGST

Use Table 6B when you have exported under LUT or Bond without paying IGST. This is the more common route for most exporters. Fields include:

📌 Export Type: "Without Payment of IGST"
📌 Invoice Number and Date: As per export invoice
📌 Shipping Bill Number and Date: From ICEGATE
📌 Port Code: Customs port of export
📌 Taxable Value: FOB value in INR
📌 LUT Number: The LUT under which the export was made
📌 Buyer Details: Foreign buyer's name and country

Table 6C – Exports by SEZ Unit to Another SEZ Unit

Rarely used. For supplies by one SEZ unit to another SEZ unit, reported separately.

Table 6D – Supplies to SEZ Developer or Unit

Used for supplies made to SEZ units or developers for authorised operations. These are also zero-rated supplies.

Example – GSTR-1 Reporting: An exporter ships leather goods worth ₹25 lakh to Germany under LUT. The export invoice is EXP/2026-27/045, dated 15 September 2026. The shipping bill is SB/2026-27/1122, dated 16 September 2026, filed at Nhava Sheva (INNSA1). In GSTR-1 for September, the exporter reports this in Table 6B with all these details. The LUT number is quoted. Once filed, the shipping bill data will be matched with GSTR-1 for refund processing.

Takeaway: GSTR-1 Table 6 is not a formality — it is your refund request. Every field must match the shipping bill exactly. Even a single-character difference will block the refund.

4. GSTR-2B and Import ITC – How Bill of Entry Data Flows In

GSTR-2B is the auto-generated statement of Input Tax Credit. For importers, the most important component of GSTR-2B is the IGST paid on imports, which flows automatically from ICEGATE.

What GSTR-2B Contains for Importers

📌 Bill of Entry Number and Date: The legal record of import
📌 Port Code: Where the import was cleared
📌 IGST Paid: Available as Input Tax Credit
📌 Compensation Cess: For applicable goods, also claimable as ITC
📌 Assessable Value: The declared CIF value
📌 GSTIN of Recipient: Must match your registered GSTIN
📌 Out of Charge Date: Determines the tax period of ITC availability

How the Data Flows

1 File BoE on ICEGATE: Declare GSTIN, HS code, assessable value, and pay IGST.

2 Out of Charge Granted: Customs clears the goods and pushes data to the GST system.

3 GSTR-2B Auto-Generated: The BoE data appears in your GSTR-2B within 1-2 days.

4 Claim in GSTR-3B: The IGST appears in your Electronic Credit Ledger and can be utilised or refunded.

If Import ITC Does Not Appear in GSTR-2B

Search BoE Feature: Use the "Search BoE" functionality on the GST portal to pull records from ICEGATE manually.
Add Missing BoE: If the BoE exists on ICEGATE but is not reflected, add it manually using the BoE number and date.
Data Mismatch: If the GSTIN or invoice details on the BoE do not match, the ITC will be blocked. File an amendment to correct the BoE.
OOC Date Issue: If the OOC date falls in the next tax period, the ITC will appear in the next month's GSTR-2B.

Example – Import ITC Flow: An importer clears goods on 22 September 2026 with IGST of ₹1,65,834 paid on the BoE. On 24 September, the IGST appears in the importer's GSTR-2B for September. In GSTR-3B for September, the importer claims the ₹1,65,834 as ITC. The amount is available in the Electronic Credit Ledger for offsetting output tax liability.

Takeaway: Import ITC is automatic — if the BoE is filed with the correct GSTIN. Verify the GSTIN before filing, and reconcile GSTR-2B with your BoE records every month.

5. GSTR-3B for Trade – Disclosing Exports, Imports, and ITC

GSTR-3B is the monthly summary return where you declare your total turnover, ITC claimed, and tax payable. For exporters and importers, several specific disclosures are critical.

Key Disclosures in GSTR-3B for Exporters

📌 Table 3.1(a) – Outward Taxable Supplies: Excludes exports. Include only domestic taxable supplies here.
📌 Table 3.1(b) – Zero-Rated Supplies: Report total value of exports and SEZ supplies here. This is a critical disclosure for refund processing.
📌 Table 4 – ITC: Claim import ITC and domestic ITC here, segregated as IGST, CGST, SGST, and Cess.
📌 Table 5.1 – Interest: Disclose interest on delayed payments, if any.
📌 Table 6.1 – Payment of Tax: Utilise the ITC available against any tax liability.

Key Disclosures in GSTR-3B for Importers

📌 Table 4(A)(5) – Import of Goods: Disclose IGST paid on imports here. This is auto-populated from GSTR-2B.
📌 Table 4(B) – ITC Reversal: Report any ITC reversal required, including blocked credit under Section 17(5).
📌 Table 5.1 – Interest: Disclose interest on delayed payments.
📌 Table 6.1 – Payment: Utilise the imported IGST credit against output tax liability.

Critical Do's and Don'ts in GSTR-3B

Report zero-rated supply value correctly in Table 3.1(b). This is what triggers refund processing.

Don't

Do not report exports as taxable supplies in Table 3.1(a). This will create a false tax liability.

Reconcile GSTR-2B with your purchase and import records before claiming ITC.

Don't

Do not claim ITC that does not appear in GSTR-2B. The system will flag the mismatch.

Example – GSTR-3B Filing: An exporter has domestic taxable supplies of ₹40 lakh, exports of ₹80 lakh, and ITC of ₹6 lakh. In GSTR-3B, they report domestic turnover in Table 3.1(a), exports in Table 3.1(b), and the entire ITC in Table 4. Since exports do not attract tax, the entire ITC of ₹6 lakh becomes refundable and can be claimed through RFD-01.

Takeaway: GSTR-3B is the bridge between your GSTR-1 reporting and your refund claim. Correct classification between taxable and zero-rated supplies is essential.

6. GST Refund Filing for Exports – RFD-01 Process

The refund claim is the final stage of the export cycle. Once GSTR-1 and GSTR-3B are filed, you can file for refund through RFD-01.

Two Types of Export Refunds

Refund Type	Applicable When	Process
Refund of IGST Paid	Export with payment of IGST	Automated processing based on GSTR-1 and shipping bill data
Refund of Unutilized ITC	Export without payment of IGST under LUT	Manual processing through RFD-01 with supporting documents

Step-by-Step Refund Filing Process

1 File GSTR-1: Report exports in Table 6A or 6B for the relevant month.

2 File GSTR-3B: Disclose zero-rated supply value in Table 3.1(b) and ITC in Table 4.

3 Reconcile Data: Match shipping bill data from ICEGATE with GSTR-1 invoice details.

4 Prepare Documents: Gather shipping bills, invoices, e-BRC, and CA-certified statement.

5 Login to GST Portal: Go to Services → Refunds → Application for Refund.

6 Select Refund Type: Choose "Refund of Unutilized ITC" or "Refund of IGST Paid" as applicable.

7 Fill Form RFD-01: Enter refund amount, bank account details, and upload supporting documents.

8 Submit Application: Sign with DSC or EVC and submit. An ARN is generated for tracking.

9 Track Provisional Refund: 90% of the claim is sanctioned provisionally within 7 days.

10 Receive Final Refund: Full refund is processed within 60 days from the date of complete application.

Key Documents for Refund Claim

GSTR-1 and GSTR-3B acknowledgement receipts for the relevant period
Statement of invoices (Annexure to RFD-01)
Shipping bill copies from ICEGATE
Export invoices with GSTIN, IEC, and shipping bill numbers
Bank Realisation Certificate (e-BRC) confirming receipt of proceeds
CA/CMA certified statement reconciling ITC availed and utilised

Example – Refund Timeline: An exporter files GSTR-1 and GSTR-3B for September 2026 by 20 October 2026. They file RFD-01 for refund of ₹4.2 lakh unutilized ITC on 22 October 2026. The 90% provisional refund of ₹3.78 lakh is credited to their bank account on 30 October 2026 — within 8 days. The full refund is processed by 20 December 2026 — within 60 days of the application.

Takeaway: Refund processing is time-bound but depends on accurate data. Always reconcile your shipping bill and GST return data before filing the refund claim.

7. Annual Return GSTR-9 – Year-End Reconciliation for Trade

GSTR-9 is the annual return that consolidates all monthly and quarterly filings for a financial year. For exporters and importers, it is the reconciliation statement that ties together all trade data.

Key Tables in GSTR-9 for Trade

📌 Table 4 – Details of Advances, Inward Supplies, and Tax Paid: Includes import ITC reconciliation
📌 Table 5 – Details of Outward Supplies: Includes exports and SEZ supplies reported through GSTR-1
📌 Table 6 – ITC Availed: Reconciliation of import ITC and domestic ITC
📌 Table 9 – Tax Paid: Summarises tax paid through cash and credit
📌 Table 17 – Refund Claimed: Discloses refunds claimed during the year
📌 Table 18 – Demands and Refunds: Discloses any demands raised or refunds sanctioned

GSTR-9C – Reconciliation Statement

Taxpayers with turnover above the notified threshold must also file GSTR-9C, a reconciliation statement certified by a Chartered Accountant or Cost Accountant. This statement reconciles the audited financial statements with the annual return.

Due Date and Late Fee

Due Date: 31 December of the following financial year
Late Fee: ₹200 per day (₹100 CGST + ₹100 SGST) capped at 0.50% of turnover
Extension: The government periodically extends the due date through notifications

Example – Annual Reconciliation: An exporter files GSTR-9 for FY 2026-27 by 31 December 2027. During the year, they reported ₹95 lakh in exports through GSTR-1 Table 6B, claimed ₹8.5 lakh in import ITC through GSTR-2B, and received ₹6.2 lakh in refunds. GSTR-9 reconciles all these numbers with the audited financial statements, ensuring consistency between GST filings and the books of accounts.

Takeaway: GSTR-9 is not optional — it is mandatory for taxpayers above the threshold. Non-filing invites penalties and can trigger departmental scrutiny.

8. ICEGATE to GST Reconciliation – The Missing Link

The single largest cause of refund delays in India is a mismatch between data filed on ICEGATE (shipping bills and bills of entry) and data reported in GSTR-1 and GSTR-2B. Understanding how to reconcile these two systems is essential for smooth refund processing.

What Gets Reconcilled

ICEGATE Data	GST Portal Data	Match Required On
Shipping Bill Number	GSTR-1 Table 6A / 6B	Exact shipping bill number and date
Export Invoice Number	GSTR-1 Invoice Details	Exact invoice number and date
Port Code	GSTR-1 Port Code	Exact 6-character port code
FOB Value	GSTR-1 Taxable Value	Exact value in INR
IGST Paid (BoE)	GSTR-2B Import ITC	GSTIN and BoE number

Common Reconciliation Errors

❌ Invoice Number Mismatch: Shipping bill references invoice "EXP/045" while GSTR-1 reports "EXP-045"
❌ Value Mismatch: Shipping bill FOB value differs from GSTR-1 taxable value
❌ Port Code Error: Wrong port code entered in GSTR-1
❌ Date Mismatch: Shipping bill date entered incorrectly
❌ Missing Shipping Bills: Some shipping bills not reported in GSTR-1
❌ GSTIN Mismatch on BoE: Incorrect GSTIN on the Bill of Entry blocks import ITC

Best Practices for Reconciliation

✅ Monthly Reconciliation: Match shipping bill data with GSTR-1 before filing the return
✅ Use ICEGATE Reports: Download the shipping bill summary from ICEGATE for reconciliation
✅ Standardize Invoice Numbers: Use consistent invoice numbering across all systems
✅ Verify Port Codes: Use the official ICEGATE port code list
✅ Verify GSTIN on BoE: Always double-check before filing
✅ File Amendments Promptly: If errors are found, file corrections in the next return period

Case Study – Reconciliation Impact: An exporter filed GSTR-1 with ₹50 lakh of exports but only 12 of 14 shipping bills matched the ICEGATE data. Two invoices had minor typos in the invoice number. The GST department flagged the mismatch and withheld the refund of ₹2.4 lakh on those two shipments. The exporter had to file an amendment in the next period and wait an additional 45 days for refund processing.

Takeaway: Reconciliation is not optional — it is the core of successful export refund processing. Build a monthly reconciliation routine and stick to it.

9. Common GST Return Filing Errors in Trade & Solutions

These are the most common return filing errors committed by exporters and importers — and how to avoid them.

Error 1: Reporting Exports in Table 3.1(a) of GSTR-3B Exports reported as taxable supplies instead of zero-rated supplies, creating false tax liability. Always report exports in Table 3.1(b) of GSTR-3B. Verify the classification before submitting.

Error 2: Forgetting to Report in GSTR-1 Table 6 Exports not reported in Table 6A or 6B, blocking the refund claim entirely. Ensure every export invoice is reported in Table 6B (LUT route) or Table 6A (IGST route). Cross-check with shipping bill data.

Error 3: Missing Shipping Bill Details GSTR-1 filed without shipping bill number and date, making the export unverifiable. Always include the shipping bill number, date, and port code in GSTR-1 Table 6. These are mandatory for refund processing.

Error 4: Claiming ITC Without GSTR-2B Reflection Claiming import ITC without checking whether the BoE data appears in GSTR-2B. Reconcile GSTR-2B with your BoE records before filing GSTR-3B. Use the Search BoE feature if data is missing.

Error 5: Wrong GSTIN on BoE Incorrect GSTIN entered on the Bill of Entry, blocking ITC flow to GSTR-2B. Verify the GSTIN before every BoE filing. If already filed incorrectly, file an amendment immediately.

Error 6: Delayed Filing of GSTR-1 and GSTR-3B Late filing triggers late fees and interest, delaying refund processing. File by the due date — 11th for GSTR-1 and 20th for GSTR-3B. Set calendar reminders for the month-end.

Error 7: Filing Refund Without Reconciliation Refund filed without verifying that shipping bill data matches GSTR-1 data. Reconcile every month before filing GSTR-1. Do not submit the return until all shipping bills are accounted for.

Error 8: Not Filing GSTR-9 Annual Return Skipping the annual return despite exceeding the turnover threshold, inviting penalties. File GSTR-9 by 31 December of the following financial year. Verify whether GSTR-9C is also applicable.

Error 9: Reversing ITC on Zero-Rated Supplies Reversing ITC on export-related inputs when it is eligible for claim. Do not reverse ITC on zero-rated supplies. Zero-rated supplies allow ITC, unlike exempt supplies.

Error 10: Ignoring Deficiency Notices Not responding to GST department notices on refund claims or ITC mismatches. Respond to all notices within the prescribed time. Monitor the GST portal and email for alerts.

Takeaway: Most return filing errors are preventable with careful data entry and monthly reconciliation. Build a checklist and use it consistently.

10. Frequently Asked Questions – Export Import GST Return Filing

Exports are reported in Table 6 of GSTR-1. Table 6A is used for exports with payment of IGST, and Table 6B is used for exports without payment of IGST under LUT/Bond.

Import ITC flows automatically from ICEGATE to your GSTR-2B when the Bill of Entry is filed with the correct GSTIN. Claim it in GSTR-3B by utilising the IGST credit in your Electronic Credit Ledger.

GSTR-1 is due on the 11th of the following month (monthly) or the 13th of the month following the quarter (quarterly). GSTR-3B is due on the 20th of the following month.

GSTR-9 is due by 31 December of the following financial year. The government occasionally extends this date through notification.

Refund of unutilized ITC is claimed through Form GST RFD-01 on the GST portal. It requires GSTR-1 and GSTR-3B filings, shipping bill copies, export invoices, e-BRC, and a CA-certified statement.

90% of the claimed refund is sanctioned provisionally within 7 days. The final refund is processed within 60 days from the date of complete application. Interest at 6% per annum applies if the refund exceeds 60 days.

Common reasons include data mismatch between shipping bill and GSTR-1, missing e-BRC, incorrect GSTIN on BoE, or pending deficiency notices. Reconcile ICEGATE and GST data to resolve.

No — GSTR-1 and GSTR-3B are the same returns for all transactions, including exports. You cannot file separate returns for export transactions.

Late fee for GSTR-1 is ₹50 per day (₹25 CGST + ₹25 SGST) for nil returns and ₹100 per day (₹50 CGST + ₹50 SGST) for returns with tax liability. The maximum late fee is capped based on turnover.

GSTR-2B is a static, auto-generated statement of ITC available for a specific tax period. GSTR-2A is a dynamic statement that updates as suppliers file their returns. GSTR-2B is the basis for ITC claim in GSTR-3B.

Yes — GSTR-1 amendments are allowed in subsequent tax periods through Table 9. The amendment period is up to 30 November of the following financial year.

GSTR-9 is mandatory for taxpayers whose aggregate annual turnover exceeds the notified threshold. Below the threshold, filing is optional.

Use the Search BoE feature on the GST portal to pull the record from ICEGATE. If the BoE exists, add it manually. If there is a data mismatch, file an amendment to correct the BoE.

No — IGST paid on imports is not refundable. It is available as Input Tax Credit that can be utilised against output tax liability or refunded if unutilised due to exports.

For GST return filing and refund issues, contact the GST helpdesk at 1800-103-4786. For ICEGATE-related matters, call 1800-3010-1000 or email helpdesk@icegate.gov.in.

11. Related Export Import Compliance Resources

Export of Goods Under GST Export Import GST Invoicing Import Export Documentation Shipping Bill Guide Bill of Entry Guide GST LUT Filing Guide GST Refund for Exporters RoDTEP Scheme Claim RCMC Certificate Guide GST for Exporters & Importers GST on Import of Goods Zero-Rated Supplies Under GST GST Return Filing Services Export Import GST Compliances

Disclaimer: This guide is for general information only and does not constitute legal or professional advice. GST return formats, due dates, and refund procedures change from time to time. Please verify all details with the official GST portal, ICEGATE, or consult a qualified professional before acting on this information.