Interestingly, it looks like Tim Cook is directly challenging the 0.005% tax rate claim that the EU commission made:
"They just picked a number from I don't know where. In the year that
the Commission says we paid that tax figure, we actually paid $400m.
We believe that makes us the highest taxpayer in Ireland that year."
...
Cook also said the 0.005pc tax rate it is accused of paying the Commission
is a “false number”.
“I have no idea where the number came from. Here is the truth, in that year
we paid $400m to Ireland and that was based on the statutory rate of 12.5pc.”