There were not winning tickets for the latest drawing in two major U.S. lotteries, sending the jackpots ballooning for early 2018.

The Powerball jackpot is now $440 million, and the Mega Millions stands at $343 million. Both games had their most recent jackpot wins in late October.

Because no winning tickets were sold for 2017, the next jackpots will be subject to the new tax rules. The next Powerball drawing is slated for Wednesday at 10:59 p.m. ET, and the next Mega Millions drawing is at 11 p.m. ET on Tuesday.

It's only the second time U.S. lottery players have had two opportunities to try for jackpots exceeding $300 million.

(Although large, neither is a record-setting amount: For either to land in the top 10 of U.S. jackpots, they would have to surpass the $448.4 million Powerball shared by two winners in August 2013.)