Warren Buffett, in his first major sit-down interview since handing over the CEO role at Berkshire Hathaway to Greg Abel, bundled prediction markets, legalized sports betting, and day trading into a single critique, calling state-sponsored gambling a “tax on stupidity” that quietly subsidizes wealthy Americans. The interview, conducted by CNBC’s Becky Quick on March 31, 2026, received mainstream coverage focused on Buffett’s investment views and retirement, but the specific mention of prediction markets was largely overlooked by trade press until a recent social media revival.
Buffett: Prediction Markets Are Just Gambling in Disguise
When Quick asked Buffett whether he disapproved of “prediction markets, of legalized sports gambling, even of day trading,” the 95-year-old investor did not separate the categories. He replied: “To the extent that the states raise money from people who [think] the dollar really means something to them, actually relieves the taxes on me or other rich people. I mean, it’s not direct, but it’s the net effect.” When pressed on whether this echoed the old line that the lottery is a tax on the stupid, Buffett agreed: “It’s a tax on stupidity.”
This framing is not new for Buffett—he used nearly identical language at Berkshire’s 2007 annual meeting, calling gambling “a tax on ignorance.” What is notable is the explicit inclusion of prediction markets, which operators like Kalshi and Polymarket have spent the past 18 months arguing are not gambling but federally regulated derivatives. Buffett accepted the conflation without modification, presenting a coherent cultural argument against the industry’s preferred narrative.
Data Highlights the Scale of the 'Tax on Stupidity'
According to the American Gaming Association, US sports betting revenue alone reached $16.96 billion in 2025, up nearly 23% year-over-year, generating $3.71 billion in state taxes, a 32.4% increase from 2024. Bernstein projects prediction market volume will hit $240 billion in 2026. Adam Hoffer, director of excise tax policy at the Tax Foundation, told Front Office Sports: “Gambling, in general, is a losing proposition. The house always wins. Piling on taxes only makes the return on investment even worse for gamblers.” Hoffer added that wealthier Americans spend a smaller share of income on gambling than lower-income households—a pattern, he said, “governments know.”
Regulatory Crossroads: Federal vs. State Tensions Rise
Buffett’s interview provides rhetorical ammunition for state regulators who argue that prediction platforms are running unlicensed gambling under different branding. While the CFTC under the Trump administration has moved toward the operators’ position—treating event contracts as derivatives—states like Arizona, New Jersey, and Romania continue to push back. CNBC, which has a minority investment in Kalshi and disclosed a commercial relationship in its April 14 prediction-markets coverage, did not mention this in the Buffett interview transcript.
Reports of new ETF filings would allow retail investors to buy event-contract exposure inside retirement accounts, pushing the products further into the mainstream. Simultaneously, Kalshi faces potential legal action over its Iran regime change market, with CEO Tarek Mansour stating the company did not list markets tied to the death of any individual. The ultimate impact of Buffett’s criticism depends on whether regulators and courts view prediction markets through the lens of a “tax on stupidity” or as a legitimate derivative tool. One of the most quoted living investors has placed them firmly on the wrong side of his sucker-game test.