I think that taxless society can be possible with just more transparency and with more math.
I doubt it, not when we still have the government.
Even math can't help much here.
State governments live on tax, without tax a country won't be up to standard and guess what, the people will complain.
The only thing agreeable here is a transparent system for tax payment. This is where blockchain can come to play, if there is true transparency, every tax issued won't be as highly charged as it is now.
And when it comes to transparency with how the taxes the people pay are going to be used then we should just forget it because it's not going to happen.