This is a regular verb. It follows the conjugation pattern of the verb hablar.
PresentPresente
La clase acaba a las cinco de la tarde.
The class ends at five in the afternoon.
PreteritePretérito indefinido
Ayer acabé mi tarea antes de cenar.
Yesterday I finished my homework before dinner.
FutureFuturo
El curso acabará en junio.
The course will end in June.