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GST for online sellers: registration, returns and due dates

Updated 3 October 2026 · 7 min read

Please noteThis is a general guide based on publicly available information. Always check with your CA before you file. GST Hero is a software tool and does not provide CA, tax or legal advice.

Selling on Amazon, Flipkart or Meesho brings a few GST tasks that sellers in a shop do not have. This overview covers registration, the returns you file, how often, by when, and what happens if you are late.

In short: most marketplace sellers need a GST registration. Each period you file GSTR-1 (your sales) and GSTR-3B (your tax payment), either monthly or quarterly under QRMP. The marketplace collects 0.5% TCS, which you claim against your tax. Late filing brings late fees and interest.
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  • Sort hundreds of order rows in a spreadsheet
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  • Build the HSN, document and marketplace tables
  • Match your totals with the TCS report
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1. Do you need a GST registration?

For a shop, GST registration is needed once turnover crosses a threshold (₹40 lakh for most goods sellers, lower in some states). Online sellers are treated differently:

  • Selling goods through a marketplace that collects TCS has traditionally required registration regardless of turnover.
  • Since October 2023, small sellers below the threshold may sell within their own state through a marketplace without registering, using an enrolment number, subject to conditions. They cannot sell to other states this way.
  • If you want to sell across India, you need a GST registration.

Composition scheme sellers can also sell goods through marketplaces within their own state, but cannot make inter-state sales.

2. The returns you file

ReturnWhat it reportsWho files
GSTR-1Your sales: by state and rate for consumers, invoice by invoice for businesses, plus HSN, documents and marketplace details.Every regular taxpayer
GSTR-3BA summary of sales tax, input tax credit and the tax you pay.Every regular taxpayer
TCS creditAccepting the TCS your marketplaces collected.Marketplace sellers, on the portal
GSTR-9Annual return.Mandatory above ₹2 crore turnover, optional below

File a return even for a period with no sales. A nil return is quick to file and avoids late fees.

3. Monthly or quarterly (QRMP)

If your turnover is up to ₹5 crore, you can choose QRMP: file GSTR-1 and GSTR-3B every quarter instead of every month.

  • You still pay tax monthly, for the first two months of each quarter, using challan PMT-06. You can pay a fixed amount based on past returns, or work out the actual tax.
  • You can upload B2B invoices monthly through the Invoice Furnishing Facility (IFF), so your business buyers get their credit sooner.
  • Many marketplace sellers with mostly consumer sales choose QRMP to file less often.

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4. Due dates

ReturnMonthly filersQuarterly (QRMP) filers
GSTR-111th of the next month13th of the month after the quarter
IFF (optional)—13th of the next month, for the first two months
PMT-06 payment—25th of the next month, for the first two months
GSTR-3B20th of the next month22nd or 24th after the quarter, depending on your state

Due dates are sometimes extended by notification. Check the GST portal close to each deadline.

5. TCS collected by marketplaces

Amazon, Flipkart and Meesho collect 0.5% of your net taxable sales as TCS and deposit it in your name. After you accept it on the GST portal, it sits in your electronic cash ledger and pays your GSTR-3B tax.

6. Late fees and interest

  • Late fees are charged per day for each late GSTR-1 and GSTR-3B, with a lower rate for nil returns and a maximum cap.
  • Interest at 18% a year is charged on tax paid late, from the due date until payment.
  • A late GSTR-1 also delays your business buyers’ input tax credit.

7. A simple monthly routine

  1. In the first days of the month, download last month’s tax reports from each marketplace.
  2. Prepare GSTR-1 from them and check the totals against each marketplace’s TCS report.
  3. File GSTR-1 by the 11th (or the 13th after the quarter).
  4. Accept your TCS credit, check the auto-filled GSTR-3B, add input tax credit and pay.
  5. File GSTR-3B by its due date, and keep the reports and filing receipts.
Please noteThis is a general guide based on publicly available information. Always check with your CA before you file. GST Hero is a software tool and does not provide CA, tax or legal advice.
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Related guides

  • How to file GSTR-1 for Meesho sellers, step by step
  • Amazon MTR report explained: B2C, B2B and what goes in GSTR-1
  • Flipkart GST return: preparing GSTR-1 from the Flipkart Sales Report
  • GSTR-1 Table 14 for e-commerce sellers: supplies through Amazon, Flipkart and Meesho
  • TCS on marketplace sales: what the 0.5% is and how to claim it
On this page
  1. 1. Do you need a GST registration?
  2. 2. The returns you file
  3. 3. Monthly or quarterly (QRMP)
  4. 4. Due dates
  5. 5. TCS collected by marketplaces
  6. 6. Late fees and interest
  7. 7. A simple monthly routine
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