UPDATE: Prepaid services are officially exempted from SST beginning 6 September 2018. More details here.
Starting 1 September 2018, all telcos had introduced 6% SST on all services. This is done in accordance with the Sales & Services Tax Act 2018 and it covers all users including postpaid, prepaid and broadband. For postpaid, the 6% tax is applied on the total taxable amount while prepaid users will have to pay the 6% tax at the point of top up.
Obviously, this had caused a lot of dissatisfaction for prepaid users as most of them are getting less value when they reload. For example, a RM10 top up will only come with RM9.43 of credit after deducting the 6% tax.