The Biggest Slot Machine Wins in History

The biggest slot machine wins in history are smaller in number than most people assume — and stranger. Only a handful of American slot jackpots have ever cleared $20 million, nearly all of them on IGT’s Megabucks progressive network, and the record has not moved in more than two decades.

On March 21, 2003, a 25-year-old software engineer from Los Angeles hit $39,713,982.25 on a Megabucks machine at the Excalibur on the Las Vegas Strip, a figure IGT announced in its own press release at the time and one that Guinness World Records still lists as the largest slot payout ever.

What makes these stories worth reading is not the number on the meter. It is what happened next. One winner chose 25 annual installments and quietly funded a parent’s retirement. Another was paralyzed seven weeks after her win by a drunk driver. A third won Megabucks twice, sixteen years apart, and gave much of the second jackpot away.

This is a plain retelling of the biggest slot machine wins on record, drawn from contemporary news reporting by the Las Vegas Sun, the Associated Press, the Deseret News, and court coverage of the criminal case that followed one of them. No invented dialogue, no guesses about what anyone was thinking — just what was reported, and what came after.

The $39.7 million record that still stands

The largest of the biggest slot machine wins happened at a $3 machine inside the Excalibur Hotel-Casino. As reported by the Las Vegas Sun in March 2003, the winner was a 25-year-old software engineer from Los Angeles who asked to stay anonymous. He was in town visiting family and following March Madness with friends when an uncle mentioned how high the Megabucks meter had climbed.

He told reporters he had played roughly $100 when he looked away from the machine for a moment. When he looked back, the symbols had lined up. The Sun reported he chose to take the money as 25 annual installments rather than a reduced lump sum, and said part of it would fund his parents’ retirement.

He has never come forward publicly since. That is his right, and it is worth noting how many record winners make the same choice — anonymity is one of the few things a jackpot can actually buy.

Cynthia Jay-Brennan: the hardest story among the biggest slot machine wins

On January 26, 2000, Cynthia Jay-Brennan, a 37-year-old cocktail waitress, put an extra $6 into a Megabucks machine at the Desert Inn and won $34.9 million — at the time the largest slot jackpot ever recorded. The Las Vegas Sun covered the win that week. She told reporters she wanted to take her family on a cruise.

Seven weeks later, on March 11, 2000, she and her sister Lela Ann Jay were stopped at a red light when their car was rear-ended. According to court coverage by the Las Vegas Sun, the driver was Clark Morse, a 58-year-old Las Vegas man who had been arrested at least 16 times on alcohol and driving-related offenses.

Lela Ann Jay died at the scene. Jay-Brennan’s fifth vertebra was shattered, leaving her paralyzed from the upper chest down. In March 2001 a jury convicted Morse on all counts, including involuntary manslaughter and DUI resulting in death. He was sentenced to 28 years.

Jay-Brennan later put part of her winnings toward spinal cord injury research and rehabilitation. Among the biggest slot machine wins on record, hers is the one most often cited — and most often flattened into a superstition about “cursed” money. The documented facts are simpler and sadder than that: a repeat drunk driver hit her car.

Johanna Huendl won $22.6 million on the way to breakfast

On March 27, 2002, Johanna Huendl of Covina, California, then 74, stopped at a Megabucks machine at Bally’s Las Vegas while heading to breakfast. She put in roughly $170 and won $22.6 million. Huendl, a former bakery worker who came to the United States from Austria in 1956, reportedly misread the meter at first and believed she had won $2 million — and said she would have been happy with that.

Her win is a useful corrective to the idea that the biggest slot machine wins go to high rollers on long sessions. Huendl was not chasing anything. She sat down for a few minutes on the way to a meal.

Elmer Sherwin hit Megabucks twice

Elmer Sherwin, a World War II veteran, won $4.65 million on a Megabucks machine at the Mirage in November 1989, within hours of the resort opening. Sixteen years later, on September 15, 2005, at age 92, he hit Megabucks again at the Cannery in North Las Vegas for $21.1 million. The Las Vegas Sun reported the second win the following day.

Sherwin remains the only player publicly confirmed to have won the Megabucks progressive twice. News reports at the time said he directed a substantial share of the second jackpot to charity, including Hurricane Katrina relief, along with provisions for his family. He died in 2007 at 93.

What actually happens after the biggest slot machine wins

Megabucks jackpots are funded by IGT, and winners generally choose between a reduced immediate cash payment and an annuity paid over 25 years. Both options are taxable income under federal law. The Excalibur winner took the annuity; other winners have taken the lump sum. There is no universally “correct” answer, and the right one depends on facts a news story never reports.

Taxes apply from a far lower level than the headlines. Under IRS rules for Forms W-2G, a casino generally must report slot machine winnings at or above a threshold that rose to $2,000 for payments made on or after January 1, 2026, under the law commonly called the One Big Beautiful Bill Act, with inflation indexing after 2026. That threshold was $1,200 for many years prior.

Withholding rules are set out in the IRS instructions, and anyone in this situation should work from IRS.gov or a licensed tax professional for their own case.

If a winner receives income-based government benefits — SSI, SNAP, Medicaid, Section 8, and similar programs — reporting requirements generally apply to new income and resources. How a specific program treats a one-time payment versus an annuity varies, and outcomes depend on the program and the person’s circumstances. The administering agency is the only reliable source for an individual answer.

The odds behind the biggest slot machine wins

The odds of lining up the three Megabucks logos are commonly reported as 1 in 49,836,032 per spin. That figure is why the biggest slot machine wins cluster on one network: the jackpot pools across hundreds of machines in Nevada and grows until someone hits.

Big hits still happen. On June 16, 2026, a visitor from Atlanta won $10,292,912.32 on a $5 Megabucks bet at Westgate Las Vegas after roughly three minutes at the machine, according to the resort and local news coverage. The winner declined to be photographed or named.

What winners can learn from the biggest slot machine wins

A few things are consistent across the documented cases rather than assumed. Most record winners stayed anonymous where state rules allowed it. Payout method varied — the Excalibur winner chose 25 installments, and others have taken cash. Several winners, including Jay-Brennan and Sherwin, directed money to charitable causes within a few years.

And the jackpots came from short, ordinary sessions: about $100 at the Excalibur, roughly $170 at Bally’s, three minutes at the Westgate. That is a fact about how progressive jackpots hit, not a strategy. Among the biggest slot machine wins on record, no winner has been reported to have any method beyond sitting down at the right machine on the right day.

Frequently Asked Questions

What is the largest slot machine jackpot ever won?

$39,713,982.25, won on a Megabucks machine at the Excalibur in Las Vegas on March 21, 2003, by a 25-year-old software engineer from Los Angeles. IGT announced it, and Guinness World Records still lists it as the largest slot payout.

Do casinos pay the biggest slot machine wins all at once?

Not necessarily. Megabucks winners are generally offered a reduced lump sum or an annuity paid over 25 years. The Excalibur record winner chose 25 annual installments, as reported by the Las Vegas Sun.

What are the odds of hitting a Megabucks jackpot?

Commonly reported as 1 in 49,836,032 per spin. That extreme rarity is exactly why the pooled jackpot can climb into eight figures before anyone hits it.

Are slot jackpots taxed?

Yes. Gambling winnings are taxable income federally. Casinos generally file Form W-2G at or above a slot reporting threshold that rose to $2,000 for payments made on or after January 1, 2026. Check IRS.gov or a tax professional for your own situation.

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Sources & How to Verify

The facts on this page are drawn from official government and primary sources. Rules and figures change, so always confirm the current details with the official agency or the promotion’s own published rules.

• FTC Consumer Advice: consumer.ftc.gov — prize, sweepstakes, and lottery scam guidance
• IRS: irs.gov — how prizes and winnings are treated as income
• Social Security Administration: ssa.gov — what SSI recipients must report
• The promotion’s official rules: every legitimate sweepstakes publishes them — the rules page is always the final word

Content last reviewed August 2026. If you notice outdated information, please contact us.

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