Powerball winnings in California and Pennsylvania are subject to Federal income tax only. There is no state income tax in Florida, South Dakota, Texas, Washington and Wyoming, and only on interest and dividends in Tennessee and New Hampshire. Winnings from tickets purchased outside of one's home state may be subject to the income tax laws of both states (with possible credit based on the two jurisdictions.)
The probability and odds can be taken into a mathematical perspective: The probability of winning the jackpot (through October 27, 2017) was 1:(75C5) x (15); that is: 75 ways for the first white ball times 74 ways for the second times 73 for the third times 72 for the fourth times 71 for the last white ball divided by 5 x 4 x 3 x 2 x 1, or 5!, and this number is then multiplied by 15 (15 possible numbers for the "Megaball"). Therefore, (75 x 74 x 73 x 72 x 71)/ (5 x 4 x 3 x 2 x 1) x 15 = 258,890,850, which means any combination of five white balls plus the Megaball has a 1:258,890,850 chance of winning the jackpot. Similarly, the odds for second prize are 1:(75C5) x (15/14) = 1: 18,492,204 chance of winning. The overall probability of winning any prize was 1 in 14.7. If there are no jackpot winners for a specific drawing, the jackpot will keep increasing, however, the odds will still remain the same.

Despite the uneasiness of many to begin with, I know of no disputes or complaints from people who have bought Powerball tickets online via the insurance model, won and not been paid. As you can imagine, this scenario would effectively close down their website as they rely solely on the trust factor. The insurance model means that you will not be buying “official” tickets, but what do you care if you get paid your millions at the end of the day!
Before the agreement, the only places that sold both Mega Millions and Powerball tickets were retailers straddling a border; one retailer on the Sharon, Pennsylvania/Masury, Ohio border sold both Mega Millions (via the Ohio Lottery) and Powerball (Pennsylvania) before the agreement and continued to be the only retailer to sell tickets for both lotteries.[12]
Even though some scratch cards costing as much as $50 in Texas and $30 in Massachusetts, state lotteries are exempt from Federal Trade Commission “truth in advertising laws” The Federal Communications Commission prohibits the broadcast of lottery advertisements, but has exemptions for lotteries “conducted by a state acting under the authority of state law. Hence, TV commercials like “The Possibilities are Endless.” (Lotteries raise over $70 billion a year, according to the North American Association of State and Provincial Lotteries. Profits from the Powerball are used to fund public projects approved by state legislatures.)
Powerball offers an optional multiplier known as the Power Play, which multiplies the seven bottom prize divisions by 2, 3, 4, 5 or 10 times, depending on the draw and jackpot size. Matching five main numbers and the Power Play still makes you a multi-millionaire by doubling Powerball’s second place prize to a staggering $2,000,000! To add the multiplier, simply check the Power Play box when you buy your Powerball tickets online.
We all love EuroMillions! This gigantic lotto holds the record for the biggest lottery jackpots ever seen in the UK and Europe, with prizes ranging as high as £150 million. It's easy to bet: just pick 5 numbers from 50, plus 2 Lucky Star numbers from 12. And with bets starting from just € 3,00 a line, EuroMillions offers a fantastic value-for-money chance to get rich every Tuesday and Friday at 20:00 GMT. Record payout: £ 190 Million.
The US Powerball is a standard lottery draw game based and operated from the golden State of California. The US Powerball has been making millionaires and multi-millionaires since its first drawing way back in 1992. With over 25 years of experience in the lottery industry, the Powerball, along with many other State lotteries, has broken through the final glass ceiling and transformed itself from an interstate lottery into a truly international lottery of global reach. 
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