Earlier quoted context omitted.
> Even simpler yet would be to go to a flat tax with an extremely high standard deduction (e.g. ~$50k with ~10% after that). That's not a flat tax. That is a progressive tax with two brackets. Once you have accepted that progressive taxes are acceptable, it is hard to see why two brackets is better than three, or 4, or even dozens. One might argue that two brackets is simpler than say 10 brackets, but that is a very…
> Once you have accepted that progressive taxes are acceptable. . .nobody can argue with a straight face that a 10 line table is too complicated. First, I don't think anyone should pay taxes on their labor. And just because my labor makes more shouldn't mean I pay a higher percentage; so, no, I don't agree with the concept of progressive taxation on labor. Regardless, that's what we have. Anyway, 10% after $50,000 is…
None of your steps are made more complicated by more brackets or less complicated by fewer brackets. You determine your taxable income (the complicated part), then lookup that taxable income in the tax tables (simple).
If the taxable income is low enough, there is a table with a large number of entries that each cover a small enough range that you don't even have to do any computation. You just find the line that covers your taxable income and the table tells you the tax.
If your income is too high for that table you have to use a smaller table with entries that cover larger ranges. That table currently has 4 entries. You find the row whose range includes your taxable income, and calculating your tax involves a multiplication and a subtraction--which is just as much work as calculating your tax under your proposed two bracket system for people whose income is high enough to be in the second bracket.