The ending of It Chapter Two closes the story: the Losers kill Pennywise for good, the curse on them breaks, and Stanley's letter gives the film its last word.
The Losers destroy the creature by crushing its heart, and the lair collapses. Eddie dies in the fight and his body is left behind. The marks on the survivors' hands fade, which shows the curse is broken, and Ben and Beverly end up together. Mike leaves Derry, Bill starts writing again, and Mike passes on Stanley's last letter, which ends by saying they are Losers and always will be.
In my opinion, the fading scars are the clearest signal that the film means this as a final answer. The oath they swore as children kept them tied to Derry, and once It is dead, the physical proof of that bond goes away as well. It could be argued that the mockery in the cavern is the real turning point, because the Losers win by treating the clown as small rather than by overpowering it, which makes Pennywise's shrinking a payoff for the fears the first film built up.
How does this ending compare with the rest of the IT story on screen? In It (2017), also directed by Andy Muschietti, the story begins with Georgie Denbrough pulled into a storm drain in October 1988, and it ends with the child Losers driving Pennywise away rather than killing it. That is why the sequel exists at all, and it makes this the first time the movies let the creature die. The two endings differ in weight as well as outcome: It (2017) runs 135 minutes and closes on a promise, while the 169 minute sequel closes on a loss (Eddie, and Mike's departure from Derry). In my view, that is the cleanest way to tell them apart. The first film ends with seven kids who still have each other, while the sequel scatters the adults across Derry first and only reunites them for the ritual, so its victory arrives with a bill attached.
The 1990 miniseries is the other obvious point of comparison. It is television, not a film, so it sits outside the movie count, but it told the child and adult halves of the story in one production. The two movies split that structure into separate releases, and I would argue that is why this finale feels so decisive: It Chapter Two has to settle everything It (2017) left open, with no later episode to fall back on.
The HBO series IT: Welcome to Derry (2025) is the third screen version worth setting beside it, and it is also television. A series can keep returning to the town and its history, whereas a film finale has to close the book, which is exactly what this one does. Perhaps that is the fairest way to read the ending: as the one place in the IT screen story where the answer is final.
The money adds a footnote. According to Box Office Mojo, It (2017) earned more worldwide than It Chapter Two on a far smaller budget, while the sequel took $473 million on $79 million, so the finale cost more and earned less. That is a box office fact and not a verdict on the ending itself.
The film also leaves no hook for another chapter. As of November 3, 2026, no studio or trade source announces a third IT film, so any talk of one is rumor, and the current status sits on the next IT film page. If you want the book comparison, the IT book vs movie page covers where the films depart from Stephen King's novel.