Those numbers don't really seem to far off from the current tax rates....
Discover the key tax changes for 2025, including adjustments to tax brackets, deductions and retirement contributions, plus insights into expiring TCJA provisions.
www.usbank.com
..
Maybe this helps:
1. Each individual with a total income equal or greater than 1/4 the Federal minimum wage, ( $7.25 x 2085 / 4 ) should be required to file and pay Federal income tax.
2. Total gross income, regardless of source or form would be taxed with no allowed exemptions, deductions, loopholes, adjustments.
3. There would be 5 permanent progressive tax rates of 15%, 20%, 25%, 30%, 37%.
4. The 5 tax rates would be applied to income of up to 1, 2, 3, 4, and greater than 4 times the GNI per person, with tables adjusted each year relative to the GNI per person.
5. Any projected Federal budget deficit would be resolved, when possible, by a surtax multiplier applied to the tax owed, not to exceed a predetermined maximum.
6. Any revenue surplus would be left for Congress to decide if it should be used to reduce the debt, and/or be used by those with gross income in the lower 4 OR just the lowest tax bracket(s) as a surtax multiplier of less than 1.
7. FICA tax and associated Trust funds would be eliminated, and made part of the Public held debt allowing Social Security and Medicare to be administered and funded through the general revenue fund.
8. Social Security benefits would no longer be associated with FICA taxable income, but primarily on age and citizenship. Details still a work in progress.
9. There would be 11 annually inflation adjusted Social Security benefit amounts determined by the age one first begins receiving benefits. ( Remains a work in progress. )
10. Naturalized citizens, who were naturalized at age 45 or more would be ineligible for reduced benefits at an age less than 67.
My taxes this year were 19.8% of my taxable income.
Under the above plan and tax table my taxes would have been 18.5% of my gross income, which would have been about $1,700 more tax, and my only deduction was the standard deduction.