Punters across Ireland are holding their breaths in anticipation as a massive €19.06 million prize is on the line.
This record-breaking jackpot will be the highest Lotto prize ever if a lucky player wins tonight.
The prize will officially eclipse the €18.96 million Lotto win of the Dan Morrissey syndicate in Carlow in 2008.
As the jackpot is now capped, this means that no additional money will be added to the jackpot prize until it is won.
The funds that would normally go to the jackpot will now be distributed to the next lower prize tier at which there are winners.
A spokesperson for the National Lottery said: "The Lotto game really is in unprecedented territory and it’s incredibly exciting for our players.
"We have a capped record jackpot of over €19 million up for grabs and for the first time in Lotto history, the jackpot prize fund will flow down to lower prize tier levels.”
"What does this mean for our players? The prize money which is usually added to the jackpot prize is guaranteed to be won at lower prize tier levels this Saturday.
"The National Lottery estimate that approximately €1 million in additional prize money will now flow down to the next prize tier where there is a winner. This prize boost will be in addition to the normal tier prize for this category."
To get the latest breaking news straight to your inbox, sign up for our free newsletter
