Comment: There is a narrow instance....

where tax in a representative form of government is voluntary that I can concoct.

I made the argument that taxing and (gov't) spending are equivalent - both extract wealth from the populace, even financed spending due to its consumption of available capital.

There is an exception to this, however. Taxing and spending are not equivalent when the government "spends" the tax money by simply giving back to the taxpayers the amount they paid in. But even this narrow situation is impossible. The representatives would likely have a payroll from that money. The taxes would still be voluntary up to the point where every person was satisfied with every representative that their tax money paid.

The instant tax money is spent in a non-agreeable way - for even one taxpayer - the tax is no longer completely voluntary.

For instance, I don't agree with the way my sister spends her money. So, I don't give her any money in general. Now, what if my sister asked me for money to buy her child clothes for school? I would voluntarily give her that money because I agreed with the purpose of the spending. However, what happens, if instead, my sister takes her friends out for a night on the town and wastes the entire sum?

The giving of money is only voluntary when one agrees with all the ways it will be spent - especially when the force of law is used to collect it.

See what I'm getting at?