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According to a representative for the Illinois Lottery, a Mega Millions reward from July has not yet been claimed.

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If the jackpot isn't claimed by the winner before September 27, it will turn into an annuity.

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The one-time reduced lump-sum option for this $1.34 billion prize is $780.5 million.

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Time is running out if the July Mega Millions jackpot winner wants a lump sum payment.

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Illinois Mega Millions winners have one year to take their prize in the form of a 30-year annuity.

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Winners of the Illinois Lottery have 60 days to select a reduced lump sum.

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They won't get to choose if they don't, according to Susan Bradley, a certified financial planner and the founder of the Sudden Money Institute in Palm Beach Gardens, Florida.

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According to Bradley, each strategy has advantages and disadvantages that are best resolved by a group of experts.

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Tax, wealth, investment, trust, and philanthropy experts might be on this team.

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A 24% federal tax withholding, or $187.3 million, would be made. A total of $38.6 million in state income taxes, or 4.5%, would be withheld. After taxes, the winner would receive $554.6 million.