Present — what is happening now, and what happens habitually
| yo | realizoI carry out | nosotros | realizamoswe carry out |
| tú | realizasyou carry out | vosotros | realizáisyou all carry out |
| él/ella/Ud. | realizahe/she carries out | ellos/Uds. | realizanthey carry out |
Present perfect — have —ed; a past still touching now. Spain: today, this week. Latin America: mostly the indefinido instead
| yo | he realizadoI have carried out | nosotros | hemos realizadowe have carried out |
| tú | has realizadoyou have carried out | vosotros | habéis realizadoyou all have carried out |
| él/ella/Ud. | ha realizadohe/she has carried out | ellos/Uds. | han realizadothey have carried out |
Present subjunctive — after que with wishes, doubt, emotion, ojalá
| yo | realice(that) I carry out | nosotros | realicemos(that) we carry out |
| tú | realices(that) you carry out | vosotros | realicéis(that) you all carry out |
| él/ella/Ud. | realice(that) he/she carries out | ellos/Uds. | realicen(that) they carry out |
Present perfect subjunctive — have —ed, under doubt or emotion: no creo que haya venido
| yo | haya realizado(that) I have carried out | nosotros | hayamos realizado(that) we have carried out |
| tú | hayas realizado(that) you have carried out | vosotros | hayáis realizado(that) you all have carried out |
| él/ella/Ud. | haya realizado(that) he/she has carried out | ellos/Uds. | hayan realizado(that) they have carried out |
Preterite — a finished past action — it started, it ended
| yo | realicéI carried out | nosotros | realizamoswe carried out |
| tú | realizasteyou carried out | vosotros | realizasteisyou all carried out |
| él/ella/Ud. | realizóhe/she carried out | ellos/Uds. | realizaronthey carried out |
Imperfect — used to / was —ing; background, habits, descriptions
| yo | realizabaI used to carry out | nosotros | realizábamoswe used to carry out |
| tú | realizabasyou used to carry out | vosotros | realizabaisyou all used to carry out |
| él/ella/Ud. | realizabahe/she used to carry out | ellos/Uds. | realizabanthey used to carry out |
Past perfect — had —ed; further back than another past event
| yo | había realizadoI had carried out | nosotros | habíamos realizadowe had carried out |
| tú | habías realizadoyou had carried out | vosotros | habíais realizadoyou all had carried out |
| él/ella/Ud. | había realizadohe/she had carried out | ellos/Uds. | habían realizadothey had carried out |
Imperfect subjunctive — si clauses and past-tense wishes: si tuviera, quería que fuera
| yo | realizara(that) I carried out | nosotros | realizáramos(that) we carried out |
| tú | realizaras(that) you carried out | vosotros | realizarais(that) you all carried out |
| él/ella/Ud. | realizara(that) he/she carried out | ellos/Uds. | realizaran(that) they carried out |
Imperfect subjunctive — the same tense, second form; commoner in Spain and in writing
| yo | realizase(that) I carried out | nosotros | realizásemos(that) we carried out |
| tú | realizases(that) you carried out | vosotros | realizaseis(that) you all carried out |
| él/ella/Ud. | realizase(that) he/she carried out | ellos/Uds. | realizasen(that) they carried out |
Past perfect subjunctive — had —ed, hypothetically: si hubiera sabido
| yo | hubiera realizado(that) I had carried out | nosotros | hubiéramos realizado(that) we had carried out |
| tú | hubieras realizado(that) you had carried out | vosotros | hubierais realizado(that) you all had carried out |
| él/ella/Ud. | hubiera realizado(that) he/she had carried out | ellos/Uds. | hubieran realizado(that) they had carried out |
Preterite perfect — had —ed, immediately before; literary, all but extinct
| yo | hube realizadoI had carried out | nosotros | hubimos realizadowe had carried out |
| tú | hubiste realizadoyou had carried out | vosotros | hubisteis realizadoyou all had carried out |
| él/ella/Ud. | hubo realizadohe/she had carried out | ellos/Uds. | hubieron realizadothey had carried out |
Future — will — (spoken Spanish often prefers voy a + infinitivo)
| yo | realizaréI will carry out | nosotros | realizaremoswe will carry out |
| tú | realizarásyou will carry out | vosotros | realizaréisyou all will carry out |
| él/ella/Ud. | realizaráhe/she will carry out | ellos/Uds. | realizaránthey will carry out |
Conditional — would —; also softens a request into politeness
| yo | realizaríaI would carry out | nosotros | realizaríamoswe would carry out |
| tú | realizaríasyou would carry out | vosotros | realizaríaisyou all would carry out |
| él/ella/Ud. | realizaríahe/she would carry out | ellos/Uds. | realizaríanthey would carry out |
Future perfect — will have —ed; done by some future point
| yo | habré realizadoI will have carried out | nosotros | habremos realizadowe will have carried out |
| tú | habrás realizadoyou will have carried out | vosotros | habréis realizadoyou all will have carried out |
| él/ella/Ud. | habrá realizadohe/she will have carried out | ellos/Uds. | habrán realizadothey will have carried out |
Conditional perfect — would have —ed; the road not taken
| yo | habría realizadoI would have carried out | nosotros | habríamos realizadowe would have carried out |
| tú | habrías realizadoyou would have carried out | vosotros | habríais realizadoyou all would have carried out |
| él/ella/Ud. | habría realizadohe/she would have carried out | ellos/Uds. | habrían realizadothey would have carried out |
Future subjunctive — legal and proverbial only: adonde fueres, haz lo que vieres
| yo | realizare(should) I carry out | nosotros | realizáremos(should) we carry out |
| tú | realizares(should) you carry out | vosotros | realizareis(should) you all carry out |
| él/ella/Ud. | realizare(should) he/she carry out | ellos/Uds. | realizaren(should) they carry out |
Imperative (do it) — orders and requests; there is no yo form
| yo | — | nosotros | realicemoslet's carry out |
| tú | realizacarry out! | vosotros | realizadcarry out! |
| él/ella/Ud. | realicecarry out! | ellos/Uds. | realicencarry out! |
Imperative (don't) — no + subjunctive — never the affirmative form with no in front
| yo | — | nosotros | no realicemoslet's not carry out |
| tú | no realicesdon't carry out | vosotros | no realicéisdon't carry out |
| él/ella/Ud. | no realicedon't carry out | ellos/Uds. | no realicendon't carry out |

I — the speaker
| Presente | realizoI carry out |
| Perfecto | he realizadoI have carried out |
| Subj. presente | realice(that) I carry out |
| Subj. perfecto | haya realizado(that) I have carried out |
| Futuro | realizaréI will carry out |
| Condicional | realizaríaI would carry out |
| Fut. perfecto | habré realizadoI will have carried out |
| Cond. perfecto | habría realizadoI would have carried out |
| Subj. futuro | realizare(should) I carry out |
| Indefinido | realicéI carried out |
| Imperfecto | realizabaI used to carry out |
| Pluscuamp. | había realizadoI had carried out |
| Subj. imperf. | realizara(that) I carried out |
| Subj. -se | realizase(that) I carried out |
| Subj. pluscuamp. | hubiera realizado(that) I had carried out |
| Pret. anterior | hube realizadoI had carried out |
| Imperativo | — |
| Imper. negativo | — |
we — the speaker plus others
| Presente | realizamoswe carry out |
| Perfecto | hemos realizadowe have carried out |
| Subj. presente | realicemos(that) we carry out |
| Subj. perfecto | hayamos realizado(that) we have carried out |
| Futuro | realizaremoswe will carry out |
| Condicional | realizaríamoswe would carry out |
| Fut. perfecto | habremos realizadowe will have carried out |
| Cond. perfecto | habríamos realizadowe would have carried out |
| Subj. futuro | realizáremos(should) we carry out |
| Indefinido | realizamoswe carried out |
| Imperfecto | realizábamoswe used to carry out |
| Pluscuamp. | habíamos realizadowe had carried out |
| Subj. imperf. | realizáramos(that) we carried out |
| Subj. -se | realizásemos(that) we carried out |
| Subj. pluscuamp. | hubiéramos realizado(that) we had carried out |
| Pret. anterior | hubimos realizadowe had carried out |
| Imperativo | realicemoslet's carry out |
| Imper. negativo | no realicemoslet's not carry out |
you (informal) — one person you are familiar with
| Presente | realizasyou carry out |
| Perfecto | has realizadoyou have carried out |
| Subj. presente | realices(that) you carry out |
| Subj. perfecto | hayas realizado(that) you have carried out |
| Futuro | realizarásyou will carry out |
| Condicional | realizaríasyou would carry out |
| Fut. perfecto | habrás realizadoyou will have carried out |
| Cond. perfecto | habrías realizadoyou would have carried out |
| Subj. futuro | realizares(should) you carry out |
| Indefinido | realizasteyou carried out |
| Imperfecto | realizabasyou used to carry out |
| Pluscuamp. | habías realizadoyou had carried out |
| Subj. imperf. | realizaras(that) you carried out |
| Subj. -se | realizases(that) you carried out |
| Subj. pluscuamp. | hubieras realizado(that) you had carried out |
| Pret. anterior | hubiste realizadoyou had carried out |
| Imperativo | realizacarry out! |
| Imper. negativo | no realicesdon't carry out |
you all — informal plural, Spain only
| Presente | realizáisyou all carry out |
| Perfecto | habéis realizadoyou all have carried out |
| Subj. presente | realicéis(that) you all carry out |
| Subj. perfecto | hayáis realizado(that) you all have carried out |
| Futuro | realizaréisyou all will carry out |
| Condicional | realizaríaisyou all would carry out |
| Fut. perfecto | habréis realizadoyou all will have carried out |
| Cond. perfecto | habríais realizadoyou all would have carried out |
| Subj. futuro | realizareis(should) you all carry out |
| Indefinido | realizasteisyou all carried out |
| Imperfecto | realizabaisyou all used to carry out |
| Pluscuamp. | habíais realizadoyou all had carried out |
| Subj. imperf. | realizarais(that) you all carried out |
| Subj. -se | realizaseis(that) you all carried out |
| Subj. pluscuamp. | hubierais realizado(that) you all had carried out |
| Pret. anterior | hubisteis realizadoyou all had carried out |
| Imperativo | realizadcarry out! |
| Imper. negativo | no realicéisdon't carry out |
he, she, you (formal) — one other person — formal you shares it
| Presente | realizahe/she carries out |
| Perfecto | ha realizadohe/she has carried out |
| Subj. presente | realice(that) he/she carries out |
| Subj. perfecto | haya realizado(that) he/she has carried out |
| Futuro | realizaráhe/she will carry out |
| Condicional | realizaríahe/she would carry out |
| Fut. perfecto | habrá realizadohe/she will have carried out |
| Cond. perfecto | habría realizadohe/she would have carried out |
| Subj. futuro | realizare(should) he/she carry out |
| Indefinido | realizóhe/she carried out |
| Imperfecto | realizabahe/she used to carry out |
| Pluscuamp. | había realizadohe/she had carried out |
| Subj. imperf. | realizara(that) he/she carried out |
| Subj. -se | realizase(that) he/she carried out |
| Subj. pluscuamp. | hubiera realizado(that) he/she had carried out |
| Pret. anterior | hubo realizadohe/she had carried out |
| Imperativo | realicecarry out! |
| Imper. negativo | no realicedon't carry out |
they, you all — several others — plural you shares it
| Presente | realizanthey carry out |
| Perfecto | han realizadothey have carried out |
| Subj. presente | realicen(that) they carry out |
| Subj. perfecto | hayan realizado(that) they have carried out |
| Futuro | realizaránthey will carry out |
| Condicional | realizaríanthey would carry out |
| Fut. perfecto | habrán realizadothey will have carried out |
| Cond. perfecto | habrían realizadothey would have carried out |
| Subj. futuro | realizaren(should) they carry out |
| Indefinido | realizaronthey carried out |
| Imperfecto | realizabanthey used to carry out |
| Pluscuamp. | habían realizadothey had carried out |
| Subj. imperf. | realizaran(that) they carried out |
| Subj. -se | realizasen(that) they carried out |
| Subj. pluscuamp. | hubieran realizado(that) they had carried out |
| Pret. anterior | hubieron realizadothey had carried out |
| Imperativo | realicencarry out! |
| Imper. negativo | no realicendon't carry out |
