Sales tax is a tax that hits low income households harder, since they consume a higher portion of their income. And it's impossible to have a progressive sales tax.
So switching from income tax to sales tax would transfer money from the relatively poor to the relatively rich.
> And it's impossible to have a progressive sales tax.
It may not have been done before but it's not impossible, right? You pay 5% on the first 10k you spend in a year, 12% on the next 30k, 20% on the next 50k, etc.
So switching from income tax to sales tax would transfer money from the relatively poor to the relatively rich.