"Taken together, it demolishes the cornerstone myth of the American tax system: that everyone pays their fair share and the richest Americans pay the most. The IRS records show that the wealthiest can — perfectly legally — pay income taxes that are only a tiny fraction of the hundreds of millions, if not billions, their fortunes grow each year.

Many Americans live paycheck to paycheck, amassing little wealth and paying the federal government a percentage of their income that rises if they earn more. In recent years, the median American household earned about $70,000 annually and paid 14% in federal taxes. The highest income tax rate, 37%, kicked in this year, for couples, on earnings above $628,300.

The confidential tax records obtained by ProPublica show that the ultrarich effectively sidestep this system."
The Secret IRS Files: Trove of Never-Before-Seen Records Reveal How the Wealthiest Avoid Income Tax

https://www.propublica.org/article/the-secret-irs-files-trove-of-never-before-seen-records-reveal-how-the-wealthiest-avoid-income-tax