Under Section 52 of the CGST Act, every E-Commerce Operator is required to collect tax at the rate of 1% (0.5% CGST + 0.5% SGST or 1% IGST) of the net value of taxable supplies made through it by other suppliers, where the consideration is collected by the ECO. For example, if you sell a product worth ₹1,000 via Amazon:
Product Value: ₹1,000
TCS Deducted by Amazon (1%): ₹10
Payment Settled to You: ₹990 (minus Amazon's commission and other fees)
This ₹10 is deposited by Amazon to the government against your GSTIN.