Brasilian taxes are crazy because you have federal and provincial taxes. There are also duties between provinces, which would be like us having to pay duties if we buy something in the next state.
There are actual customs clearance between providence's.
Anyways, as of today Gasoline is taxed at 53% but that doesn't matter because the Automobile itself is taxed at 31% to start with.
Lots of uninvestable entities such as universities and politically favored private companies. In principle, those folks blow the money on materials and equipment but I think jbog's posts make it clear why there are problems there. Dew hit the substantive problems underlying PBR.
Market Data 
Markets 
AI
