ProPublica obtained IRS tax records on thousands of wealthy Americans and found that billionaires like Bezos, Musk, and Buffett paid little to no income tax in specific years despite enormous wealth growth—Buffett paid an effective 0.1% tax rate on $24.3 billion in wealth gains between 2014-2018. This happens legally because U.S. tax code only taxes realized gains (asset sales), not unrealized gains (stock price appreciation), allowing the ultrarich to accumulate wealth without triggering income tax liability that wage earners face. The article omits discussion of how tax policy got this way (decades of lobbying, capital gains preferencing) and potential solutions beyond describing the problem.