1. Yes Service Tax is Payable on the commission income 2. ST registration is required if the turnover exceeds rs 9,00,000. since in your case the turnover exceeded 10,00,000, you need to register for ST 3. Small service provider exemption is available only if in the previous year the turnver did not exceed 10,00,000. in your case since it was 13,00,000 you will not get the exemption and are required to pay ST on the full amount of the turnover of the current year
31 August 2019
Sale of fabric attracts, if any, excise duty, if he is a manufacturer. In the case of trader, there is no service tax at all as per Negative list.