Mega Millions has rolled to an estimated $604 million for Friday’s drawing (July 10, 11 p.m. ET), the largest Mega Millions jackpot of 2026 so far, and by most tallies just outside the ten biggest US jackpots on record. It climbed there after no ticket matched all six numbers on Tuesday, July 7. Powerball is running hot too: no one hit its top prize on Wednesday either, so that jackpot rolled to about $457 million for Saturday, July 11.

We covered the billion-dollar week a couple of days ago, the odds, and why most wins are small. Today the number worth understanding is the one on the sign: $604 million isn’t what a winner takes home. Here’s the honest read.

“$604 million” is a headline, not a check

That figure is the annuity: 30 payments spread over 29 years. Almost every winner takes the other option instead: the cash lump sum, an estimated $266.3 million. That’s less than half the advertised number, before a dollar of tax. Neither choice is wrong, but they’re very different decisions, and the giant headline figure is the one you’ll never actually see land in an account.

Then taxes take a real bite

On the cash option, the IRS withholds 24% up front, but the top federal rate is 37%, so a prize this size sits squarely in that bracket and more comes due at tax time. On top of that, your state may tax it too: a handful (Texas, Florida and a few others) take nothing, while some take close to another 10%. So a “$604 million” jackpot is realistically a mid-$100-millions take-home in a high-tax state, still life-changing, just nowhere near the billboard. If you want your state’s actual number, our lottery tax calculator does the cash-vs-annuity and federal-plus-state math for you.

What a record jackpot doesn’t change

The odds. Matching all six Mega Millions numbers is roughly 1 in 290 million, and that stays the same whether the prize is $40 million or $604 million, a bigger jackpot just makes the same long shot more tempting. A record week is a fine reason to buy a single ticket for the fun of it, with money you’d be happy to never see again. It isn’t a plan.

The part that’s actually in your control

Not your odds, whether you check. Record jackpots pull in millions of people who don’t usually play and won’t think to look afterward, which is how well over a billion dollars in prizes goes unclaimed every year. If you buy in for Friday:

• Sign the back of the ticket right away, an unsigned ticket belongs to whoever holds it.
• Check it against its own drawing. A ticket is only entered in the single drawing printed on it, a Friday Mega Millions ticket says nothing about Saturday’s Powerball, and it doesn’t roll forward to next week.
• Don’t count on remembering. Scan it once with WonYet and we’ll tell you if it won when that drawing’s results are in, down to the small prizes, which are the ones people forget. You can also see what each match pays on the Mega Millions payout chart.
• If it’s the big one, slow down: verify through the official Mega Millions site, tell almost no one, and read what to do if you win before you make a single call.

The calm bottom line

The year’s biggest jackpot is a great headline and a fun dollar of entertainment. Just remember that “$604 million” is really a ~$266 million cash choice, minus taxes, and that the only outcome fully in your hands is whether a winning ticket ever actually gets checked. Play small, keep it fun, and don’t let one die in a cupholder.

Always verify your results through official lottery channels before claiming any prize. WonYet is not affiliated with Powerball, Mega Millions, or any lottery organization. · All lottery names and marks are trademarks of their respective owners.