The Future Tense of deber is used to express an obligation, duty or probability that will occur in the future. For example, Deberé estudiar más para aprobar el examen. (I will have to study more to pass the exam.)

Deber is a regular -er verb, so its Future Tense conjugations follow the regular pattern by dropping the infinitive ending and adding the corresponding future tense endings.

Conjugations

Conjugations of Deber (to owe/should) in the Future Tense tense (Latin American Spanish):

Deber generally means “to owe” or “must/should”, but has several different meanings in the Future Tense, some of which might surprise you.

Obligation: This is the most common meaning, indicating something that is required or expected. For example, Deberé estudiar más para aprobar el examen. (I will have to study more to pass the exam.)

Probability: Deber can also express a high probability or likelihood of something happening. For example, Deberá llover mañana según el pronóstico. (It will probably rain tomorrow according to the forecast.)

Assumption: It can convey an assumption or deduction based on available information. For example, Deberá estar en casa a esta hora. (He/She must be at home at this time.)

Recommendation: Deber can suggest a recommendation or advice. For example, Deberás comer más frutas y verduras. (You should eat more fruits and vegetables.)

Colloquial Usage: In some informal contexts, deber can express disbelief or skepticism. For example, ¿Deberás creer que te voy a prestar dinero? (Do you really think I’m going to lend you money?)

Examples

Examples of Deber in the Future Tense

Mañana deberé levantarme temprano para llegar a tiempo al aeropuerto. (Tomorrow I will have to wake up early to get to the airport on time.)

Si no estudias, deberás repetir el curso el próximo semestre. (If you don’t study, you will have to retake the course next semester.)

Para la fiesta, deberá usar ropa formal. (For the party, you will have to wear formal attire.)

Deberemos ahorrar dinero si queremos comprar una casa el año que viene. (We will have to save money if we want to buy a house next year.)

Después de graduarse, los estudiantes deberán buscar empleo. (After graduating, students will have to look for employment.)

Cuando llegues a la ciudad, deberás probar la comida típica. (When you arrive in the city, you will have to try the typical food.)

Para mantener una vida saludable, deberemos hacer ejercicio regularmente. (To maintain a healthy life, we will have to exercise regularly.)

Si quieres mejorar tu español, deberás practicar con hablantes nativos. (If you want to improve your Spanish, you will have to practice with native speakers.)

Antes de viajar al extranjero, deberán obtener un pasaporte válido. (Before traveling abroad, they will have to obtain a valid passport.)

Para la reunión de negocios, deberemos preparar una presentación convincente. (For the business meeting, we will have to prepare a convincing presentation.)

Si quieres conseguir ese trabajo, deberás impresionar en la entrevista. (If you want to get that job, you will have to impress in the interview.)

Cuando tengas hijos, deberás enseñarles valores importantes. (When you have children, you will have to teach them important values.)

Para celebrar el Año Nuevo, deberemos comprar fuegos artificiales. (To celebrate New Year’s, we will have to buy fireworks.)

Si quieren ir de vacaciones, deberán ahorrar dinero con anticipación. (If they want to go on vacation, they will have to save money in advance.)

Cuando te gradúes, deberás buscar un buen trabajo para mantenerte. (When you graduate, you will have to look for a good job to support yourself.)

Conjugations with English Translations

Conjugations of Deber (to owe/should) in the Future Tense tense (Latin American Spanish) with English Translations:

This post covers Latin American Spanish. For Castilian Spanish, click here

Synonyms

The Future tense is also known as the Simple Future, Future Simple, Future Tense, Future Indicative, or Will Future in English, and as Futuro Simple, Futuro Imperfecto, Tiempo Futuro, Futuro de Indicativo, or Indicativo Futuro in Spanish.