ser Future Conjugation
ser — to be
The future of ser is regular: seré, serás, será, seremos, seréis, serán.
ser Future Forms
When to Use the Future
Use the future to talk about what something will be, or to express probability/wondering in the present (e.g., 'I wonder who that is').
Notes on ser in the Future
Surprisingly, ser is regular in the future. You simply add the future endings to the full infinitive 'ser'.
Example Sentences
Seré un gran artista algún día.
I will be a great artist one day.
yo
Mañana será un día mejor.
Tomorrow will be a better day.
él/ella/usted
¿Quién será ese hombre?
I wonder who that man is?
él/ella/usted
Common Mistakes
Mistake: Trying to use a shortened stem like 'sré'.
Correct: Keep the full 'ser' stem: seré.
Why: Learners often expect common verbs to be irregular in the future, but ser follows the rules here.
Master Spanish verbs in context
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Related Tenses
Present
yo: soy
The present of ser is highly irregular and essential: soy, eres, es, somos, sois, son.
Preterite
yo: fui
The preterite of ser shares the exact same forms as the verb 'ir' (to go): fui, fuiste, fue, fuimos, fuisteis, fueron.
Imperfect
yo: era
The imperfect of ser is one of only three irregular verbs in this tense: era, eras, era, éramos, erais, eran.
Conditional
yo: sería
The conditional of ser is regular: sería, serías, sería, seríamos, seríais, serían.
Present Subjunctive
yo: sea
The present subjunctive of ser is irregular: sea, seas, sea, seamos, seáis, sean.
Imperfect Subjunctive
yo: fuera
The imperfect subjunctive of ser uses the 'fuer-' stem: fuera, fueras, fuera, fuéramos, fuerais, fueran.
Affirmative Imperative
yo: sé
The affirmative imperative of ser is used for commands: sé, sea, seamos, sed, sean.
Negative Imperative
yo: no seas
The negative imperative of ser uses 'no' + present subjunctive: no seas, no sea, no seamos, no seáis, no sean.