There are no Australian taxes to be paid on any winnings from our lotteries. Some overseas lotteries do have taxes payable within those countries. For example, a federal tax of 30% is applicable within the United States for jackpot wins in the US Powerball and US Mega Millions lotteries. A US state tax of 8% is also payable on wins of $1500 USD and higher. These taxes will be deducted from any prize amount.
To find out more, visit Game Rules.