Is taxation theft?
No it's necessary
Render to Caesar what is Caesars.
How is it not? If taking something that doesn't belong to you by threat of force isn't theft, what is?
Or is government granted an exception?
After a certain point it is. But not automatically.
To me, it doesn't matter. If it doesn't belong to you, and you're taking it with the threat of force, it's theft.
Exactly. People should be able to spend their money as they see fit.