A scheme of luxury retail tax known as the FairTax could be used to supplement the tariffs and excise taxes of the US like before we made the income tax mistake in 1913
Income tax isn't a mistake, because it has a lot of advantages over the idiotic FairTax scheme:
#1 Income taxes are progressive, because your total taxes paid are always proportional to your earnings, rather than how much of your income gets spent. To incredibly oversimply things, let's say you live here in central FL and your entire income for the year was $1,070. You go ahead and blow your entire yearly salary on an iPhone for $1000 and pay $70 in sales tax. That's 7% of your income in taxes. Now, let's say you're Elon Musk and you buy that same iPhone. I'm gonna defer to ChatGPT for that, and it estimates that the 7% sales tax on a $1,000 iPhone represents 0.000000028% of Elon Musk's wealth. For Musk to have paid the same 7% of his wealth towards taxes on iPhones, he'd have to buy 250 million of them, or roughly 10% of all the iPhones that have ever been sold.
#2 If you try to make a sales tax scheme more fair by refunding some of the taxes paid back to the lower income levels, you're back to the same amount of bureaucracy required to administer an income tax scheme, only now you also have to make people track every single purchase, as well as their income rather than just... their income.
#3 Encouraging people to hoard their income to avoid taxes is bad for the economy. You want people to spend their income, because that's what keeps the wheels of capitalism spinning. Psychologically, under an income tax system it's obvious that the money you get to keep after taxes is yours to save or spend as you please, and when you don't get a tax break for living on ramen rather than filet mignon, you might as well go for the steak if it's in your budget. If you think trickle down economics doesn't work now, just wait until the wealthy are actually incentivized not to spend their money.
#4 Lastly, it just makes the most logical sense that taxes should be based upon the benefits you've been deriving from society, rather than your level of consumption. If things are really working out for you and lots of money is coming your way, you have a moral obligation to pay some of that forward back to the society which made it possible for you to earn it in the first place, and whether or not you choose to spend that money is immaterial to that fact. Think of it like a buffet. You still have to pay up front, even if the only thing you're going to do is grab a bunch of food, bring it to your table and then stare at it, because that's food which is now unavailable for others to eat.