[concerned about politics]

The IRS already has complete tracking ability on most all goods and services bought and sold.

Learn how to barter. Trading services or skills doesn't require money. No money, no taxes.

[PSYCHO-FREEP]

That would only work for someone who is completely solvent and has no debt, or they work for themselves, or both.

You still have to buy the essentials and if your income does not match your expenses, you will be thrown in prison under their iron fist.