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LOL!  It's quite easy.  Return any tax bill with the note:  "I will be happy to pay this if You prove I am subject."  As taxes are voluntary, They cannot make such proof.  The key is in not refusing, which creates controversy.  A gentleOne never refuses an offer (to be subject, or any other offer), but rather, makes a counteroffer.  This creates no controversy.

Always start a counteroffer with an expression that You will do as asked if...  And then add Your conditions.  "I will surely do that if You jump off a high cliff," for example.

And BTW...  I am 63, no spring chicken.  LOL!  And I have been seeking solutions for most of My life - even as a child.

As taxes are voluntary

Taxes are voluntary? You are 63? OK, you are right, I won’t bother you any more.