Tax collection at source: e commerce operators must collect and remit TCS and file matching statements, with discrepancies adjusted against suppliers. Electronic commerce operators collecting consideration for supplies must collect tax at source on the net value of taxable supplies, remit collected amounts monthly, and file prescribed electronic monthly and annual statements; suppliers may claim credit for amounts so collected, omissions can be rectified within prescribed timelines subject to interest, and mismatches between operator and supplier filings are communicated and can be added to supplier output tax liability with interest if not rectified.