Earlier quoted context omitted.
> Financing it. These programs are monumentally expensive. You need to get the money from somewhere. The easiest place to take it is via the money printer and the second is from the rich. This is not actually that hard because they're only expensive on paper. Right now you have a slew of means tested programs with phase outs that amount to high marginal tax rates on the poor. Meanwhile we try to do the opposite with…
> you can use a flat tax system Maybe you could help me with this because I never understood it. It seems like the tiered rates of our tax is the least of our worries. I can see an argument that mathematically it's more complicated than flat, but it's just arithmetic. And practically speaking, nobody does it anyway. The computer figures it out, or they look in the tax table. And that's the same thing they're going to…
No, it's more complicated because then you need to keep track of things at all.
Suppose you go to your job and make a salary and they withhold some of it for the IRS. Then you take a side gig and make a little extra money, or you owned some stock and got a dividend, or anything else that changes your taxable income. Now you have to file taxes to reconcile all of this and determine what your tax rate even is.
If there was a single rate then your employer takes out that much and gives it to the IRS and your side gig takes out the same percent and gives it to the IRS and your brokerage takes out the same percent and gives it to the IRS and you don't even have a tax return because there is nothing to calculate. Or you can just use VAT and not even have to do withholding.
One of the other big things to keep in mind here is that a lot of the conventional wisdom on taxes is PR from rich people/corporations, e.g. claiming that consumption taxes don't tax the rich because they don't spend most of their income. It sounds plausible until you realize that what the super rich and international corporations actually do is keep their money offshore so they don't have to pay income tax on the interest until they repatriate it, which they then never do and instead take out a loan when they want to buy something. So it's actually the income tax they don't pay and a consumption tax they would have to whenever they buy things.
> doing away with those doesn't mean we need to do away with tiered tax rates.
Tiered tax rates are a hideous hack to begin with to avoid people having to do calculus. What you really want is a continuous curve where effective tax rate starts off negative and increases up to some maximum rate with increasing income or spending. Which is exactly what you get with a flat tax + UBI.