+A cost overrun happens when the final [Cost](/wiki/cost) of a project surpasses its initial [Budget](/wiki/budget). These unexpected increases can threaten project viability and often result from unforeseen challenges or changes in scope.
+## See also
+- [Project Management](/wiki/project_management)
+- [Risk Management](/wiki/risk_management)
+- [Scope Creep](/wiki/scope_creep)
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