Most players know the basic mechanics of EuroMillions: if nobody matches all five numbers and both Lucky Stars, the jackpot rolls over to the next draw. What fewer people realise is that this growth isn’t infinite. There’s a hard limit set at €250 million, and once it’s reached, the rules change in a way most players don’t expect.
The cap hasn’t always been €250 million
The EuroMillions jackpot cap hasn’t stayed the same since the game began. When EuroMillions launched in 2004, there wasn’t even a fixed cash limit — instead, there was a cap on the number of consecutive rollovers allowed. Over time, the organisers introduced a monetary ceiling that rose gradually: first €185 million, then €190 million, later €200 million, €210 million, €220 million, €230 million, €240 million… eventually reaching the current €250 million, which has now been fixed permanently and no longer increases even after it’s won.
This detail alone debunks a common myth: many players assume the jackpot can “keep growing forever” week after week. In reality, once it hits the ceiling, the money stops piling up in the top prize tier.
What exactly happens when the cap is reached
When the jackpot reaches €250 million without anyone matching the full winning line, something interesting happens: the extra money that would normally boost the jackpot starts flowing down into the tier just below it — the Match 5 + 1 Lucky Star category. In other words, the jackpot stops growing, but second-tier prizes shoot up.
This phase can last for up to four draws. If none of those four draws produces a jackpot winner, EuroMillions’ most dramatic mechanism kicks in: the Must Be Won draw.
The Must Be Won draw: the money always gets paid out
In this fifth draw, the rules change completely: the €250 million jackpot must be paid out one way or another, whether or not there’s a Match 5 + 2 winner. If someone does match all five numbers and both Lucky Stars, they take the full amount as normal. But if nobody does, the entire sum rolls down to be shared among winners in the next prize tier with winners — typically Match 5 + 1 Lucky Star.
That means, in theory, a handful of players who didn’t even match the full combination could end up splitting more than €250 million between them. It’s one of the rare moments in EuroMillions where the jackpot is guaranteed to leave the pot no matter what.
It’s only happened three times in the game’s history
Dramatic as the mechanism sounds, it’s an extremely rare event. Since EuroMillions began, the Must Be Won draw has only been triggered three times:
- 3 February 2006, after eleven consecutive draws without a winner.
- 17 November 2006, the only time the jackpot actually had to roll down: 20 tickets matching 5 numbers + 1 Lucky Star split the prize, each taking home around €9.6 million.
- 8 October 2019, when a single UK ticket matched the full winning line just in time, scooping the entire jackpot — then worth €190 million, the cap in place at that point.
In other words, across nearly two decades of EuroMillions history, the roll-down to a lower tier has only happened once. Every other time, someone matched the full combination before the money strictly had to be shared out.
Why this matters for players
Beyond the curiosity factor, this mechanism has a practical takeaway: when the jackpot gets “stuck” at the €250 million cap for several draws in a row, second-tier prizes become far bigger than usual, since they’re absorbing the money that can no longer feed the jackpot. For a player who cares more about the chance of winning “something big” than hitting the exact jackpot, these draws are, statistically, the most interesting of the season.
Understanding that there’s a limit also helps explain why EuroMillions occasionally announces so-called Superdraws — special draws with a guaranteed jackpot boost even before the natural cap is reached. They’re another way the participating lotteries generate extra excitement without relying solely on the weekly rollover.
In summary
The EuroMillions jackpot doesn’t grow indefinitely: it’s capped at €250 million, can stay there for up to four draws, and if nobody wins it in the fifth, the money must be shared among the next tier of winners. It’s a mechanism that has only been triggered three times in the game’s history — but it explains some of the most talked-about, and most rewarding, EuroMillions draws ever held.
