text: A sales tax IS REGRESSIVE .  Big deal, the Social Security Tax is the most Regressive of all.  Those making $118,500 pay 12.4 percent but those making more pay less.  It is a poor man's tax.  A person earning $1,185,000 pays only 1.24 percent and a person making $10,185,000 pays a measly 0.124 percent.  The poor getting the screws is a way of life in America.