According to https://dqydj.com/average-median-top-household-income-percen..., the 99th percentile household accounts for 5.75% of the income. In reply to the sibling comment about the bottom 50% paying 4% of federal income tax, the bottom 50% is responsible for 18.3% of income.

The bottom 50% pay 4% of the federal income tax revenue.

That's not the question. I'm asking if the top 1% earn 38.5% of taxable income, or if they earn more than that. If they earn more than that, then 38.5% is clearly underpaying on their taxes. Doesn't really matter to me if they did so illegally or by bribing a legislator to change the laws for them - it's still evading their fair share of taxes.

> I'm asking

Why not ask google? You can use it as well as I can. Google is pretty good at providing factual answers.

This article might help: https://www.bloomberg.com/news/articles/2018-10-14/top-3-of-...

Specifically, they have a graph that shows the breakdown of "share of adjusted gross income" vs "share of total income tax": https://assets.bwbx.io/images/users/iqjWHBFdfxIU/itOyNXaN9ah...