Matthew Miner's Website

Lottery ROI Calculator

Some things to note off the bat:

With that out of the way, let's get down to the math.

Powerball

Currently the next Powerball Jackpot amount is $20,000,000. Taking the lump sum, you would get $10,800,000, less the $3,958,900 of federal taxes.

With 20,000,000 players…

…playing for the remaining $6,841,100…

…you would have an average ROI of 33% (including lesser prizes).

If only one person won, you would have an ROI of 33%. However this must be reduced because you would have a 7% chance of sharing the jackpot with another winner.

Mega Millions

Currently the next Mega Millions Jackpot amount is $50,000,000. Taking the lump sum, you would get $26,400,000, less the $9,730,900 of federal taxes.

With 19,000,000 players…

…playing for the remaining $16,669,100…

…you would have an average ROI of 27% (including lesser prizes).

If only one person won, you would have an ROI of 27%. However this must be reduced because you would have a 6% chance of sharing the jackpot with another winner.