A voluntary dismissal happens when the plaintiff chooses to withdraw their own lawsuit. In such cases, the plaintiff may decide to voluntarily dismiss the claim to save time, reduce costs, or negotiate a settlement.
In contrast, an involuntary dismissal is ordered by the judge, usually because the court finds the claim invalid, filed in bad faith, or not supported by evidence. Both can lead to a case being closed, but only a dismissal with prejudice means the matter is permanently resolved.
However, unlike dismissals without prejudice, these rulings can sometimes prevent the plaintiff from bringing the same claim again.