Actually, a national sales tax would be regressive, because it would fall heavily on the poor, at least as heavily as on the rich, if not more so. The poor tend to save very little and spend almost all of what they earn, so they would be paying a large national sales tax as compared to their income, whereas many of them currently pay nothing or little in income taxes.
The rich, by contrast, save far more, and spend only a much smaller share of their income, and thus only a smaller share of their income would be taxed.
Therefore a national sales tax would, as a percentage of income, weigh heavier on the poor than on the rich. That is extremely regressive, and IMO, highly immoral.
A poor person who makes $10,000 a year, and spends $9,000 of it, not including a national sales tax of, say, 10%. They would be paying a tax of $900, or 9% of their income.
This person would not be paying an income tax, it should be noted, under the current system, so they are actually having their ability to afford to live hampered markedly.
Now lets look at a hypothetical rich person who makes $450,000 a year, but only spends $300,000 of it, investing or whatnot the rest. They’d pay a tax of $30,000, or 6.7% of their income. Under the current system, this person would be paying somewhere around $150,000. So they get a nice, massive tax cut, while the tax burden is being shifted harshly to the poor, who are those least able to pay it.
A “progressive” tax is not one in which those who spend/make more pay more, but one where those who make more pay increasinly higher rates on the income they make, the more the make, the higher the percentage they pay on the income. Thus a national sales tax is NOT progressive in any sense. At best it is proporitional, but given the different spending habits of different economic classes, it is in fact regressive.
Kirk