https://taxfoundation.org/data/all/federal/latest-federal-in...
- The top 1% of income earners pay 40.4% of the total U.S. Federal Income Tax receipts
- Top 5% pays 61.0%
- Top 10% pays 72.0%
- Top 25% pays 87.2%
- Top 50% pays 97.0%
...of course that doesn't include payroll taxes (Social Security).