QUOTE(EddyLB @ May 22 2013, 05:35 PM)
Let's use numbers, maybe easier to understand
Supplier A sells stuff to Supplier B --> price RM100 + GST RM4 = RM104. Supplier A remits RM4 GST to Customs
Supplier B re-sells the same stuff to Supplier C --> RM110 + GST RM4.40 = RM114.40. Supplier B claim RM4 from Customs. So, nett pay to Customs is RM0.40
Supplier C re-sells the same stuff to Consumer --> RM120 + GST RM4.80 = RM124.80. Supplier C claim RM4.40 from Customs. So, nett pay to Customs is RM0.40
Total GST collected by Customs is RM4.00 + RM0.40 + RM0.40. Which is the eventual selling price RM120 x 4% = RM4.80.
Therefore, it is not "layer on layer". The final consumer actually pay the GST. Business have no reasons to hike price. But in actual fact, some business will take opportunity to profit I think

Yes, and there is bound to be other effects.
Supplier A will also pay higher price for necessities that he and his family uses personally.
After all Supplier A is also a consumer, right?
So to make ends meet, he will raise the price by a few RM as well.
The same with supplier B and C and so on.
This is the indirect consequence of GST.
And like you said, businesses will take the opportunity to raise prices for no good reason.