Yes, IRS SOI tables. https://www.irs.gov/statistics/soi-tax-stats-individual-stat...
You can find high-level summaries from various websites, but they might have a bias eg: taxfoundation
You can find high-level summaries from various websites, but they might have a bias eg: taxfoundation
If the people with 90% of the income pay less than 90% of the total income taxes, something is wrong. Every lower income should be paying less, as a percentage of their income.
However, I am skeptical that higher taxes or just taxing the rich or high earners more will solve the deficit or government efficiency issues.
Also I disagree with 90% of income should pay 90% of taxes. People who are better capital allocators than the government should be incentivized to allocate over paying taxes.
We've spent the past 50 years lowering the taxes on those who have the most income/wealth with only negative outcomes to show for it.
I think the mistake you're making is assuming that those best at accumulating capital are also the best at allocating it. If they were, I expect we'd see a lot more investment into new technologies and markets rather than the large increase in rent-seeking we have seen instead.