El futuro refers to future time. Spanish future tense is included within the indicativo and subjuntivo moods.
Sara vendrá a mi fiesta mañana.
Sara will come to my party tomorrow.
Vamos a ir a casa de Luisa por la tarde.
We are going to Luisa's in the afternoon.
Tú habrás terminado tus deberes pronto.
You will have finished your homework soon.
Related lesson: Tense