Present — what is happening now, and what happens habitually
| yo | deboI have to | nosotros | debemoswe have to |
| tú | debesyou have to | vosotros | debéisyou all have to |
| él/ella/Ud. | debehe/she has to | ellos/Uds. | debenthey have to |
Present perfect — have —ed; a past still touching now. Spain: today, this week. Latin America: mostly the indefinido instead
| yo | he debidoI have had to | nosotros | hemos debidowe have had to |
| tú | has debidoyou have had to | vosotros | habéis debidoyou all have had to |
| él/ella/Ud. | ha debidohe/she has had to | ellos/Uds. | han debidothey have had to |
Present subjunctive — after que with wishes, doubt, emotion, ojalá
| yo | deba(that) I have to | nosotros | debamos(that) we have to |
| tú | debas(that) you have to | vosotros | debáis(that) you all have to |
| él/ella/Ud. | deba(that) he/she has to | ellos/Uds. | deban(that) they have to |
Present perfect subjunctive — have —ed, under doubt or emotion: no creo que haya venido
| yo | haya debido(that) I have had to | nosotros | hayamos debido(that) we have had to |
| tú | hayas debido(that) you have had to | vosotros | hayáis debido(that) you all have had to |
| él/ella/Ud. | haya debido(that) he/she has had to | ellos/Uds. | hayan debido(that) they have had to |
Preterite — a finished past action — it started, it ended
| yo | debíI had to | nosotros | debimoswe had to |
| tú | debisteyou had to | vosotros | debisteisyou all had to |
| él/ella/Ud. | debióhe/she had to | ellos/Uds. | debieronthey had to |
Imperfect — used to / was —ing; background, habits, descriptions
| yo | debíaI used to have to | nosotros | debíamoswe used to have to |
| tú | debíasyou used to have to | vosotros | debíaisyou all used to have to |
| él/ella/Ud. | debíahe/she used to have to | ellos/Uds. | debíanthey used to have to |
Past perfect — had —ed; further back than another past event
| yo | había debidoI had had to | nosotros | habíamos debidowe had had to |
| tú | habías debidoyou had had to | vosotros | habíais debidoyou all had had to |
| él/ella/Ud. | había debidohe/she had had to | ellos/Uds. | habían debidothey had had to |
Imperfect subjunctive — si clauses and past-tense wishes: si tuviera, quería que fuera
| yo | debiera(that) I had to | nosotros | debiéramos(that) we had to |
| tú | debieras(that) you had to | vosotros | debierais(that) you all had to |
| él/ella/Ud. | debiera(that) he/she had to | ellos/Uds. | debieran(that) they had to |
Imperfect subjunctive — the same tense, second form; commoner in Spain and in writing
| yo | debiese(that) I had to | nosotros | debiésemos(that) we had to |
| tú | debieses(that) you had to | vosotros | debieseis(that) you all had to |
| él/ella/Ud. | debiese(that) he/she had to | ellos/Uds. | debiesen(that) they had to |
Past perfect subjunctive — had —ed, hypothetically: si hubiera sabido
| yo | hubiera debido(that) I had had to | nosotros | hubiéramos debido(that) we had had to |
| tú | hubieras debido(that) you had had to | vosotros | hubierais debido(that) you all had had to |
| él/ella/Ud. | hubiera debido(that) he/she had had to | ellos/Uds. | hubieran debido(that) they had had to |
Preterite perfect — had —ed, immediately before; literary, all but extinct
| yo | hube debidoI had had to | nosotros | hubimos debidowe had had to |
| tú | hubiste debidoyou had had to | vosotros | hubisteis debidoyou all had had to |
| él/ella/Ud. | hubo debidohe/she had had to | ellos/Uds. | hubieron debidothey had had to |
Future — will — (spoken Spanish often prefers voy a + infinitivo)
| yo | deberéI will have to | nosotros | deberemoswe will have to |
| tú | deberásyou will have to | vosotros | deberéisyou all will have to |
| él/ella/Ud. | deberáhe/she will have to | ellos/Uds. | deberánthey will have to |
Conditional — would —; also softens a request into politeness
| yo | deberíaI would have to | nosotros | deberíamoswe would have to |
| tú | deberíasyou would have to | vosotros | deberíaisyou all would have to |
| él/ella/Ud. | deberíahe/she would have to | ellos/Uds. | deberíanthey would have to |
Future perfect — will have —ed; done by some future point
| yo | habré debidoI will have had to | nosotros | habremos debidowe will have had to |
| tú | habrás debidoyou will have had to | vosotros | habréis debidoyou all will have had to |
| él/ella/Ud. | habrá debidohe/she will have had to | ellos/Uds. | habrán debidothey will have had to |
Conditional perfect — would have —ed; the road not taken
| yo | habría debidoI would have had to | nosotros | habríamos debidowe would have had to |
| tú | habrías debidoyou would have had to | vosotros | habríais debidoyou all would have had to |
| él/ella/Ud. | habría debidohe/she would have had to | ellos/Uds. | habrían debidothey would have had to |
Future subjunctive — legal and proverbial only: adonde fueres, haz lo que vieres
| yo | debiere(should) I have to | nosotros | debiéremos(should) we have to |
| tú | debieres(should) you have to | vosotros | debiereis(should) you all have to |
| él/ella/Ud. | debiere(should) he/she have to | ellos/Uds. | debieren(should) they have to |
Imperative (do it) — orders and requests; there is no yo form
| yo | — | nosotros | debamoslet's have to |
| tú | debehave to! | vosotros | debedhave to! |
| él/ella/Ud. | debahave to! | ellos/Uds. | debanhave to! |
Imperative (don't) — no + subjunctive — never the affirmative form with no in front
| yo | — | nosotros | no debamoslet's not have to |
| tú | no debasdon't have to | vosotros | no debáisdon't have to |
| él/ella/Ud. | no debadon't have to | ellos/Uds. | no debandon't have to |

I — the speaker
| Presente | deboI have to |
| Perfecto | he debidoI have had to |
| Subj. presente | deba(that) I have to |
| Subj. perfecto | haya debido(that) I have had to |
| Futuro | deberéI will have to |
| Condicional | deberíaI would have to |
| Fut. perfecto | habré debidoI will have had to |
| Cond. perfecto | habría debidoI would have had to |
| Subj. futuro | debiere(should) I have to |
| Indefinido | debíI had to |
| Imperfecto | debíaI used to have to |
| Pluscuamp. | había debidoI had had to |
| Subj. imperf. | debiera(that) I had to |
| Subj. -se | debiese(that) I had to |
| Subj. pluscuamp. | hubiera debido(that) I had had to |
| Pret. anterior | hube debidoI had had to |
| Imperativo | — |
| Imper. negativo | — |
we — the speaker plus others
| Presente | debemoswe have to |
| Perfecto | hemos debidowe have had to |
| Subj. presente | debamos(that) we have to |
| Subj. perfecto | hayamos debido(that) we have had to |
| Futuro | deberemoswe will have to |
| Condicional | deberíamoswe would have to |
| Fut. perfecto | habremos debidowe will have had to |
| Cond. perfecto | habríamos debidowe would have had to |
| Subj. futuro | debiéremos(should) we have to |
| Indefinido | debimoswe had to |
| Imperfecto | debíamoswe used to have to |
| Pluscuamp. | habíamos debidowe had had to |
| Subj. imperf. | debiéramos(that) we had to |
| Subj. -se | debiésemos(that) we had to |
| Subj. pluscuamp. | hubiéramos debido(that) we had had to |
| Pret. anterior | hubimos debidowe had had to |
| Imperativo | debamoslet's have to |
| Imper. negativo | no debamoslet's not have to |
you (informal) — one person you are familiar with
| Presente | debesyou have to |
| Perfecto | has debidoyou have had to |
| Subj. presente | debas(that) you have to |
| Subj. perfecto | hayas debido(that) you have had to |
| Futuro | deberásyou will have to |
| Condicional | deberíasyou would have to |
| Fut. perfecto | habrás debidoyou will have had to |
| Cond. perfecto | habrías debidoyou would have had to |
| Subj. futuro | debieres(should) you have to |
| Indefinido | debisteyou had to |
| Imperfecto | debíasyou used to have to |
| Pluscuamp. | habías debidoyou had had to |
| Subj. imperf. | debieras(that) you had to |
| Subj. -se | debieses(that) you had to |
| Subj. pluscuamp. | hubieras debido(that) you had had to |
| Pret. anterior | hubiste debidoyou had had to |
| Imperativo | debehave to! |
| Imper. negativo | no debasdon't have to |
you all — informal plural, Spain only
| Presente | debéisyou all have to |
| Perfecto | habéis debidoyou all have had to |
| Subj. presente | debáis(that) you all have to |
| Subj. perfecto | hayáis debido(that) you all have had to |
| Futuro | deberéisyou all will have to |
| Condicional | deberíaisyou all would have to |
| Fut. perfecto | habréis debidoyou all will have had to |
| Cond. perfecto | habríais debidoyou all would have had to |
| Subj. futuro | debiereis(should) you all have to |
| Indefinido | debisteisyou all had to |
| Imperfecto | debíaisyou all used to have to |
| Pluscuamp. | habíais debidoyou all had had to |
| Subj. imperf. | debierais(that) you all had to |
| Subj. -se | debieseis(that) you all had to |
| Subj. pluscuamp. | hubierais debido(that) you all had had to |
| Pret. anterior | hubisteis debidoyou all had had to |
| Imperativo | debedhave to! |
| Imper. negativo | no debáisdon't have to |
he, she, you (formal) — one other person — formal you shares it
| Presente | debehe/she has to |
| Perfecto | ha debidohe/she has had to |
| Subj. presente | deba(that) he/she has to |
| Subj. perfecto | haya debido(that) he/she has had to |
| Futuro | deberáhe/she will have to |
| Condicional | deberíahe/she would have to |
| Fut. perfecto | habrá debidohe/she will have had to |
| Cond. perfecto | habría debidohe/she would have had to |
| Subj. futuro | debiere(should) he/she have to |
| Indefinido | debióhe/she had to |
| Imperfecto | debíahe/she used to have to |
| Pluscuamp. | había debidohe/she had had to |
| Subj. imperf. | debiera(that) he/she had to |
| Subj. -se | debiese(that) he/she had to |
| Subj. pluscuamp. | hubiera debido(that) he/she had had to |
| Pret. anterior | hubo debidohe/she had had to |
| Imperativo | debahave to! |
| Imper. negativo | no debadon't have to |
they, you all — several others — plural you shares it
| Presente | debenthey have to |
| Perfecto | han debidothey have had to |
| Subj. presente | deban(that) they have to |
| Subj. perfecto | hayan debido(that) they have had to |
| Futuro | deberánthey will have to |
| Condicional | deberíanthey would have to |
| Fut. perfecto | habrán debidothey will have had to |
| Cond. perfecto | habrían debidothey would have had to |
| Subj. futuro | debieren(should) they have to |
| Indefinido | debieronthey had to |
| Imperfecto | debíanthey used to have to |
| Pluscuamp. | habían debidothey had had to |
| Subj. imperf. | debieran(that) they had to |
| Subj. -se | debiesen(that) they had to |
| Subj. pluscuamp. | hubieran debido(that) they had had to |
| Pret. anterior | hubieron debidothey had had to |
| Imperativo | debanhave to! |
| Imper. negativo | no debandon't have to |
