They’re the two biggest jackpots in the world, and their payout mechanics are nearly identical — but the differences that do exist matter when you’re the winner. Here’s the full comparison.
The jackpots and the annuities
Both games advertise the annuity value: Powerball pays it as 30 graduated payments over 29 years, and Mega Millions uses the same structure — one immediate payment followed by 29 annual checks, each 5% larger. In both games the cash (lump sum) option equals the prize pool actually available, and has recently run 45–52% of the advertised figure depending on interest rates. A $160 million Mega Millions jackpot might come with a cash value around $75–80 million.
Odds: nearly a tie
The jackpot odds are famously close: Mega Millions is 1 in 302.6 million, Powerball 1 in 292.2 million. Any-prize odds are about 1 in 24 for both. Practically speaking, neither game is a “better bet” — they’re entertainment with a lottery-ticket-shaped possibility attached.
Taxes: identical rules, different states
The IRS treats both games identically: 24% withholding on prizes over $5,000, true liability up to 37%. The state side is where location matters. Buying in Texas, Florida or California? Zero state tax on the win (California even exempts its lottery winnings entirely). New York? Up to 10.9% plus 3.876% for NYC residents. That’s why “Mega Millions tax calculator Texas” is its own search universe — the game matters less to your net than the state you claim in.
Claim deadlines and anonymity
Both games give winners roughly 180 days to a year to claim, depending on the state. Anonymity depends on state law, not the game: Delaware, Kansas and Maryland allow some anonymity; California and New York publish winners’ names. And both games give you a 60-day window after claiming to switch between cash and annuity — a decision worth taking to a tax attorney, not to a group chat.
Which should you play?
Whichever jackpot is bigger that week — the payout mechanics are the same. What you should actually optimize is your claim strategy: the ticket signed and secured, the trust or LLC decided before claiming, the cash-vs-annuity choice modeled with real 2026 brackets, and the team of professionals hired before the press conference. Our calculator handles the numbers for both games in every state; the discipline is on you.