a PMA registered in Batam, that PMA doesn't pay the same taxes as let's say a PMA registered in Bali.
the mayor 'playing' room in the books is because BATAM is within a special economic zone, wich means no import tax and VAT (value added tax).
hand-in-hand with corporate income tax, wich is calculated like...income minus certain deductions..
leaves alot of room, to legally play with numbers.
a Kitas, would need to be processed/applied for in Batam.