Jackpot Calculator is an independent website that estimates what lottery winners actually keep after federal, state and local taxes, for both the lump sum and the annuity. It is built and run by an independent developer.
It is not affiliated with Powerball, Mega Millions, the Multi-State Lottery Association or any state lottery, and it does not sell tickets or link to ticket sellers.
How we keep the numbers honest
Every tax rate and rule links to the official source it comes from, and we check our results against take-home amounts that state lotteries have published. The methodology lists the formulas, sources, assumptions and every known limitation.
How the site is funded
The site may show advertising. Ads never change the calculations or the order of any results.
Contact
Email hello@jackpotcalculator.com. If you think a number is wrong, include a link to the official figure — see the contact page.