The key rule is simple: it is not only about how much you sell, but also where you sell.

If a seller lists products on marketplaces, they usually need a GSTIN (GST registration number). This is because supplies made through an e-commerce operator fall under special provisions of the CGST Act, including mandatory GST registration for marketplace sellers.

If a business sells only through its own website, then normal GST thresholds apply:

• up to ₹40 lakh turnover for goods in most states
• up to ₹20 lakh turnover for services Some states have lower thresholds.

TCS is a mechanism where the marketplace withholds a small percentage from a seller’s sales and reflects it within the GST system.

For sellers, TCS does not necessarily mean losing additional money. The deducted amount can later be claimed as a tax credit when filing GST returns.

However, there is an important nuance: if a seller does not maintain records, reconcile marketplace reports, or file tax returns properly, TCS can become a source of confusion, errors, and overpayments.

Many sellers launch businesses quickly: they create a website, connect payments, run ads — and only later think about taxes. This is a risky approach.

The most common mistakes include:

• joining marketplaces without understanding GST rules
• failing to distinguish intra-state and inter-state sales
• not reconciling TCS with marketplace reports
• forgetting to file nil returns
• mixing personal and business payments
• ignoring refunds when calculating taxable turnover

Indian tax authorities are increasingly using digital data — including UPI transactions — to identify unregistered sellers who exceed GST thresholds. This highlights an important trend: online and digital sales are becoming far more transparent to tax authorities.

For online sellers, payments and taxes are directly connected.

If payments are processed chaotically, it becomes difficult to track turnover, refunds, commissions, TCS deductions, and tax credits.

That is why modern e-commerce businesses need not only sales, but also transparent payment infrastructure.

A reliable payment system helps businesses:

• accept payments faster
• monitor cash flow
• reduce reconciliation errors
• control refunds
• simplify reporting processes

In 2026, India’s e-commerce ecosystem is becoming more mature, regulated, and technology-driven.

The businesses that succeed are those that build transparent tax, payment, and operational systems from the start.

This is where fintech solutions become a critical part of business infrastructure.

With solutions from Einpays, businesses gain fast, secure, and convenient payment tools that help sellers operate more transparently, efficiently, and confidently in India’s rapidly evolving digital economy.