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What Is a Rollover in the Lottery?
A rollover is what happens when nobody wins the jackpot: the prize "rolls over" to the next draw, making the top prize bigger. It's how lottery jackpots climb to eye-watering sums.
How it works
If no ticket matches all the main numbers, that jackpot money is carried forward and added to the next draw's top prize. Repeated rollovers can build a jackpot quickly — this is exactly how EuroMillions reaches its €250m cap and Lotto jackpots grow.
How many times can it roll?
UK Lotto can roll over a maximum of five times. The next draw is then a Must Be Won draw, where the jackpot has to be paid out. EuroMillions rolls until it hits its cap.
Does it change your odds?
No — and this is the key point. A rollover makes the prize bigger, but your chance of winning is exactly the same. You're playing for more money at identical odds. See Must Be Won draws and the Lotto first prize for more.
Frequently asked questions
What is a rollover?
When no one wins the jackpot, it 'rolls over' and is added to the next draw's top prize.
How many times can Lotto roll over?
Up to five times, then the next draw is Must Be Won.
Does a rollover change my odds?
No — the prize grows, but your chance of winning stays the same.
Related guides: Must Be Won draws, the Lotto first prize and the odds of winning the lottery.