How is GST calculated for e-commerce sellers in India?

GST for e-commerce sellers in India is calculated at standard rates (typically 18% for services and electronic goods) applied to the taxable sales value. Sellers must register for GST irrespective of turnover thresholds once they cross state boundaries, and e-commerce operators must collect 1% Tax Collected at Source (TCS) on all supplier transactions.
What are the GST registration thresholds for online sellers?
Unlike physical stores that enjoy turnover exemptions up to INR 40 Lakhs, online sellers executing inter-state transactions must secure a mandatory GSTIN from day one under Section 24 of the CGST Act. However, recent amendments offer composition scheme relaxations for intra-state e-commerce sellers below INR 1.5 Crores, subject to specific listing constraints.
How is Tax Collected at Source (TCS) managed by portals?
Under Section 52 of the GST Act, digital marketplace platforms (like Amazon or Flipkart) must deduct 1% TCS (0.5% CGST + 0.5% SGST or 1% IGST) from the net value of taxable supplies made through their portals. Sellers can claim full credit for this TCS in their electronic cash ledgers to offset monthly payable liabilities.
How does Input Tax Credit (ITC) offset online seller liabilities?
Online sellers pay GST on marketplace listing fees, shipping logistics, and storage warehouse costs. All these tax outlays qualify as Input Tax Credits. By reconciling monthly purchase registers with GSTR-2B logs, sellers offset these input credits against the tax collected from retail sales, keeping net tax payouts optimized.
Frequently Asked Questions
Yes. Under GST rules, if you store inventory in marketplace fulfillment centers located in different states, you must secure a distinct GSTIN in each of those states as a Principal Place of Business.
With recent amendments, e-commerce sellers with turnover under INR 1.5 Crores can opt for composition schemes for intra-state sales, but they lose the ability to collect tax from customers or claim input tax credit.
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This article is written and reviewed by practicing Chartered Accountants of DSS Corp Advisory in Chennai. Information is aligned with the latest Finance Act notifications.