Most Spanish verbs are regular in the future. The infinitive serves as the stem of almost all Spanish verbs in the future tense.
| The Future Tense | |||
| Infinitive | Stem | Endings | |
| Trabajar | yo | Trabajar- | é |
| Aprender | tú | Aprender- | ás |
| Escribir | él | Escribir- | á |
| Hablar | ella | Hablar- | á |
| Decidir | Vd. | Decidir- | á |
| Entender | nosotros | Entender- | emos |
| Bailar | vosotros | Bailar- | éis |
| Caminar | ellos | Caminar- | án |
| Perder | ellas | Perder- | án |
| Recibir | Vds. | Recibir- | án |
Note: All the endings, except the Nosotros form, have written accent marks.
A few verbs are irregular in the future tense.
These verbs use a variation of the infinitive as a stem.
Here are some. The endings are the same as those for regular verbs.
| Infinitive | Stem | Future Tense | ||
| Decir | dir- | yo | dir- | é |
| Hacer | har | tú | har- | ás |
| Poder | podr- | ella | podr- | á |
| Poner | pondr- | Vd. | pondr- | á |
| Saber | sabr- | nosotros | sabr- | emos |
| Haber | habr- | vosotros | habr- | éis |
| Salir | saldr- | ellos | saldr- | án |
| Tener | tendr- | ellas | tendr- | án |
| Querer | querr- | Vds. | querr- | án |
| Venir | Vendr- | |||