The way I see it. Malaysia's GST problem was number 1, mismanaged. Many companies complained difficult to get refunds. Number 2, it's multitier, every step got GST, then refund, for the purpose of tracking transaction so that companies cannot tipu on tax. Problem here when multitier, got some people they know refund sometime lambat, they hike up price so that they don't rugi in term of cash flow. When the lambat refund came in they syok. So ended up those in the last stage of GST have to pay a bit more.

SST on the other hand is single tier. Old sst less coverage, prone to kena tipu by companies coz no tracking of any previous transaction. Hence this results in less revenue for gomen. Mind that this is all my opinion.

So madani want to fix this but didn't dare going back to GST. So they up SST coverage then to track transactions they intro e-invoice.

Got one ktards claim e-invoice wasn't planned by madani but by previous gomen. So dont know which previous gomen that he meant. Maybe abah or Sabri or maybe bijan. If he meant bijan, it's kinda funny coz if using GST what for using e-invoice.