Active Voice: The subject of the sentence performs the action.
* Past: "The dog chased the ball."
* Present: "The dog chases the ball."
* Future: "The dog will chase the ball."
Passive Voice: The subject of the sentence receives the action.
* Past: "The ball was chased by the dog."
* Present: "The ball is chased by the dog."
* Future: "The ball will be chased by the dog."
Therefore, it's not "voice" that has tenses, but the verbs within sentences that are in active or passive voice that change tenses.