[coloradan]

For those who must insist on progressive taxation, there is an answer: sales tax rebates that go to everyone, equal to the level of taxation paid by someone at the poverty line. Those people break even (tax paid = refund), while the poorer actually get money and the rich get less. It is one of the seriously-being-considered plans. It even has the bonus of allowing people who wish to not be tracked by the government, for privacy reasons, who don't want to be in "the system," they can just not give their SSN and not get a check. The price for this anonymity is only the cost of sales tax at the poverty level.

[palmer]

the bonus of allowing people who wish to not be tracked by the government

It won't keep sellers from being tracked by the government.