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Powerball vs Mega Millions: Which Is the Better Bet?

Aug 17, 2026 · 5 min read

The jackpot odds are almost identical, but one ticket costs $2 and the other $5. Here is the break-even jackpot for each game — and why record jackpots never reach it.

Two games, almost the same odds

Powerball asks you to match 5 white balls out of 69 plus one red ball out of 26. That is 11,238,513 white-ball combinations times 26 red balls, or 292,201,338 possible tickets. Mega Millions asks for 5 out of 70 plus one out of 24: 12,103,014 times 24, or 290,472,336 tickets.

So Mega Millions gives you a jackpot chance that is better by about half a percent. It also charges $5 a play against Powerball's $2. Priced per unit of hope, that is not close: buying one chance in a million at the Powerball jackpot takes 292 tickets and $584, while the same one-in-a-million shot at Mega Millions takes 291 tickets and $1,452.

Bar length is what it costs to buy one chance in a million at the jackpot. Nearly identical odds, two and a half times the price.

The eight prizes below the jackpot

Almost nobody wins the top prize, so the smaller tiers are what you are actually buying. Your chance of winning something is 1 in 24.87 at Powerball and 1 in 23.07 at Mega Millions — but that is dominated by the bottom rung, where matching only the red or gold ball pays $4 on a 1 in 38.32 chance, or $5 on a 1 in 35.17 chance.

Add every non-jackpot tier weighted by its probability and a Powerball ticket returns about $0.32, which is 16 cents on the dollar. Mega Millions returns about $0.37 at base prize levels; since its 2025 rule change every ticket carries a random 2X to 10X multiplier on non-jackpot prizes, so the floor is about $0.75, or 15 cents on the dollar. Two very different-looking prize tables, the same answer: ignore the jackpot and both games hand back roughly a sixth of your money.

The jackpot that would make it fair

That leftover is what the jackpot has to cover. A Powerball ticket costs $2 and the smaller prizes are worth $0.32 of it, so the jackpot needs to supply $1.68 of expected value. Multiply by the 292,201,338 tickets it is spread over and you get a break-even jackpot of about $491 million. Run the same arithmetic on Mega Millions — $5 minus the $0.75 floor, times 290,472,336 — and you need about $1.24 billion.

Advertised jackpots pass $491 million several times a year, which is where the folk wisdom that big jackpots are worth playing comes from. The wisdom breaks on two details that never make the billboard.

What a Powerball jackpot would have to be advertised at before a $2 ticket breaks even. The dashed line is the largest jackpot ever won, $2.04 billion in November 2022.

Detail one: the advertised number is not the money

The headline jackpot is an annuity paid over 30 years. Take the cash instead — nearly every winner does — and you receive the present value of that stream, which has recently run near half the advertised figure. Then the whole amount lands in one tax year, so it is taxed at the top federal rate of 37% even though only 24% is withheld at the counter, and most states take a further cut on top.

Half, then roughly a third of the remainder gone, leaves something near 31 cents of spendable money per advertised dollar. That alone pushes Powerball's break-even jackpot from $491 million to about $1.56 billion — past every jackpot in the game's history except one.

Detail two: big jackpots are big because other people are buying

A jackpot only grows because nobody hit it, and the growth is what pulls in casual players. Ticket sales for a record draw run into the hundreds of millions, and every one of those tickets is a chance that you split the prize you just calculated.

The number of other winning tickets behaves like a Poisson count with mean equal to tickets sold divided by 292,201,338. Sell 300 million tickets and that mean is 1.03, meaning there is a 64% chance at least one stranger matches with you, and your expected share of the jackpot falls to 62.5%. That is not a rounding error — it is a third of the prize, and it arrives exactly when the prize looks most worth chasing.

Your expected share of the jackpot as other tickets are sold, from the Poisson model. Record draws sit at the right-hand end of this curve, not the left.

Fold that in and Powerball's break-even advertised jackpot lands near $2.49 billion, above the $2.04 billion record set in November 2022. The threshold runs away from you as you approach it, because the thing that raises the prize is the same thing that dilutes it.

What choosing your numbers does and does not change

Every combination is equally likely, so no selection method moves the 1 in 292,201,338. What selection does move is the second term in the calculation above — how many people you split with if you win. Hand-picked tickets cluster hard in 1 to 31 because people use birthdays, and pattern picks like a straight run or a diagonal on the slip are played by thousands of strangers at once.

An unpopular set does not raise your chance of winning. It raises what winning is worth, and it is the only term in the whole calculation a player controls. That is the honest case for a generator that does not pick the way people pick.

Run the numbers yourself

If you play anyway, at least play with the arithmetic in view. The Powerball number generator and the Mega Millions number generator both draw five plays at a time and chart the leading digits, so you can see how unlike a birthday pattern the output is. And when you want to check a claimed percentage — a cash-option ratio, a tax rate, a share of a prize — the percentage calculator settles it in one line.