Lottery ticket sales increase as jackpots grow. Lottery officials estimate the Powerball jackpot to be $730 million and the Mega Millions jackpot at $850 million. If someone were to win the Mega Millions tonight it would be the third-largest jackpot ever. A Powerball winner tomorrow night would take home the fifth-largest jackpot ever in the United States. The jackpot amount listed refers to the amount given if paid out over 30 years. However winners typically opt for a one-time lump sum payment which would amount to a $546 million cash prize for the Powerball and $628 million cash prize for the Mega Millions. The odds of winning the Powerball jackpot are 1 in 292,201,338. Odds for the Mega Millions’ top prize are 1 in over 302 million.