How to File GSTR-1 for Meesho, Amazon & Flipkart Sellers (2026 Guide)

Updated July 2026 · 5 min read · More guides

If you sell on Meesho, Amazon or Flipkart, filing your monthly GSTR-1 is not optional — it is how the government matches the tax your marketplace already collected (TCS) against your GSTIN. Miss it, and you face late fees, blocked e-way bills and notices.

The good news? You do not need a CA or hours of Excel work. Here is the complete process, step by step.

What is GSTR-1 and why online sellers cannot skip it

GSTR-1 is the monthly return where you report every outward supply (sale) — invoice-wise for B2B buyers and state-wise for B2C customers. For e-commerce sellers there is a catch: Amazon, Flipkart and Meesho deduct TCS and report your sales to the GST portal themselves. If your GSTR-1 does not match their numbers, the mismatch shows up against your GSTIN.

Step 1: Download the right report from each marketplace

This is where most sellers get stuck — every platform keeps its GST report in a different place:

• Meesho: Supplier Panel → Payments → download the GST/TCS sales report and returns report (plus Tax Invoice Details for product-level data)
• Amazon: Seller Central → Reports → Tax Document Library → MTR B2C and B2B reports (CSV)
• Flipkart: Seller Hub → Reports → Sales Report (Excel)

Download them for the filing month — no editing needed.

Step 2: Convert the reports into a GSTR-1 JSON

The GST portal accepts returns as a JSON file through “Prepare Offline”. Building that JSON manually means classifying thousands of rows into:

• B2CS — state-wise summary of retail sales, net of returns
• B2B — invoice-wise sales to GST-registered buyers
• HSN Summary (Table 12) — now split B2B/B2C, with valid HS-2022 codes
• TCS (Table 14) — supplies through each e-commerce operator
• Document series — invoice and credit-note ranges

Doing this in Excel takes hours, and one wrong HSN code can block your whole upload. A purpose-built tool like gstsecure.in does it in about 2 minutes: upload the marketplace files exactly as downloaded, preview your complete sales summary free, and download a portal-ready JSON — accurate to the paisa.

Step 3: Upload the JSON to gst.gov.in

1. Log in at gst.gov.in → Services → Returns → Returns Dashboard
2. Pick the month → GSTR-1 → Prepare Offline
3. Upload your JSON — the portal fills every table automatically
4. Verify the summary, then Submit and File with OTP/DSC

That’s it — your GSTR-1 is filed.

Common mistakes to avoid

• Ignoring returns/RTO — customer returns must reduce your taxable value, or you will overpay GST
• Old HSN codes — the portal now rejects retired HS-2017 codes in Table 12
• Skipping Table 14 (TCS) — your numbers must match what the marketplace reported
• Filing from settlement amounts — GST is on the sale value, not on what Meesho paid you

File your GSTR-1 in the next 10 minutes

Stop wrestling with spreadsheets every month. Upload your Meesho, Amazon and Flipkart reports at gstsecure.in — see your free sales summary and insights instantly, and download your portal-ready GSTR-1 JSON for just ₹1 on your first filing. Too busy? We will even file it for you for ₹199 on WhatsApp.