Tax Collected at Source (TCS) under GST means the tax collected by an e-commerce operator from the consideration received by it on behalf of the supplier of goods, or services who makes supplies through the operator's online platform.
Tax collected at source (TCS) is the tax payable by a seller which he collects from the buyer at the time of sale. Section 206C of the Income-tax act governs the goods on which the seller has to collect tax from the purchasers.