What is Tax Collection at Source (TCS)?

In terms of Section 43C(1) of the MGL, the e-commerce
operator is required to collect (i.e. deduct) an amount out
of the consideration paid or payable to the actual supplier
of goods or services in respect of supplies of goods and /
or services made through such operator. The amount so
deducted/collected is called as Tax Collection at Source
(TCS).