Present — what is happening now, and what happens habitually
| yo | prefieroI prefer | nosotros | preferimoswe prefer |
| tú | prefieresyou prefer | vosotros | preferísyou all prefer |
| él/ella/Ud. | prefierehe/she prefers | ellos/Uds. | prefierenthey prefer |
Present perfect — have —ed; a past still touching now. Spain: today, this week. Latin America: mostly the indefinido instead
| yo | he preferidoI have prefered | nosotros | hemos preferidowe have prefered |
| tú | has preferidoyou have prefered | vosotros | habéis preferidoyou all have prefered |
| él/ella/Ud. | ha preferidohe/she has prefered | ellos/Uds. | han preferidothey have prefered |
Present subjunctive — after que with wishes, doubt, emotion, ojalá
| yo | prefiera(that) I prefer | nosotros | prefiramos(that) we prefer |
| tú | prefieras(that) you prefer | vosotros | prefiráis(that) you all prefer |
| él/ella/Ud. | prefiera(that) he/she prefers | ellos/Uds. | prefieran(that) they prefer |
Present perfect subjunctive — have —ed, under doubt or emotion: no creo que haya venido
| yo | haya preferido(that) I have prefered | nosotros | hayamos preferido(that) we have prefered |
| tú | hayas preferido(that) you have prefered | vosotros | hayáis preferido(that) you all have prefered |
| él/ella/Ud. | haya preferido(that) he/she has prefered | ellos/Uds. | hayan preferido(that) they have prefered |
Preterite — a finished past action — it started, it ended
| yo | preferíI prefered | nosotros | preferimoswe prefered |
| tú | preferisteyou prefered | vosotros | preferisteisyou all prefered |
| él/ella/Ud. | prefirióhe/she prefered | ellos/Uds. | prefirieronthey prefered |
Imperfect — used to / was —ing; background, habits, descriptions
| yo | preferíaI used to prefer | nosotros | preferíamoswe used to prefer |
| tú | preferíasyou used to prefer | vosotros | preferíaisyou all used to prefer |
| él/ella/Ud. | preferíahe/she used to prefer | ellos/Uds. | preferíanthey used to prefer |
Past perfect — had —ed; further back than another past event
| yo | había preferidoI had prefered | nosotros | habíamos preferidowe had prefered |
| tú | habías preferidoyou had prefered | vosotros | habíais preferidoyou all had prefered |
| él/ella/Ud. | había preferidohe/she had prefered | ellos/Uds. | habían preferidothey had prefered |
Imperfect subjunctive — si clauses and past-tense wishes: si tuviera, quería que fuera
| yo | prefiriera(that) I prefered | nosotros | prefiriéramos(that) we prefered |
| tú | prefirieras(that) you prefered | vosotros | prefirierais(that) you all prefered |
| él/ella/Ud. | prefiriera(that) he/she prefered | ellos/Uds. | prefirieran(that) they prefered |
Imperfect subjunctive — the same tense, second form; commoner in Spain and in writing
| yo | prefiriese(that) I prefered | nosotros | prefiriésemos(that) we prefered |
| tú | prefirieses(that) you prefered | vosotros | prefirieseis(that) you all prefered |
| él/ella/Ud. | prefiriese(that) he/she prefered | ellos/Uds. | prefiriesen(that) they prefered |
Past perfect subjunctive — had —ed, hypothetically: si hubiera sabido
| yo | hubiera preferido(that) I had prefered | nosotros | hubiéramos preferido(that) we had prefered |
| tú | hubieras preferido(that) you had prefered | vosotros | hubierais preferido(that) you all had prefered |
| él/ella/Ud. | hubiera preferido(that) he/she had prefered | ellos/Uds. | hubieran preferido(that) they had prefered |
Preterite perfect — had —ed, immediately before; literary, all but extinct
| yo | hube preferidoI had prefered | nosotros | hubimos preferidowe had prefered |
| tú | hubiste preferidoyou had prefered | vosotros | hubisteis preferidoyou all had prefered |
| él/ella/Ud. | hubo preferidohe/she had prefered | ellos/Uds. | hubieron preferidothey had prefered |
Future — will — (spoken Spanish often prefers voy a + infinitivo)
| yo | preferiréI will prefer | nosotros | preferiremoswe will prefer |
| tú | preferirásyou will prefer | vosotros | preferiréisyou all will prefer |
| él/ella/Ud. | preferiráhe/she will prefer | ellos/Uds. | preferiránthey will prefer |
Conditional — would —; also softens a request into politeness
| yo | preferiríaI would prefer | nosotros | preferiríamoswe would prefer |
| tú | preferiríasyou would prefer | vosotros | preferiríaisyou all would prefer |
| él/ella/Ud. | preferiríahe/she would prefer | ellos/Uds. | preferiríanthey would prefer |
Future perfect — will have —ed; done by some future point
| yo | habré preferidoI will have prefered | nosotros | habremos preferidowe will have prefered |
| tú | habrás preferidoyou will have prefered | vosotros | habréis preferidoyou all will have prefered |
| él/ella/Ud. | habrá preferidohe/she will have prefered | ellos/Uds. | habrán preferidothey will have prefered |
Conditional perfect — would have —ed; the road not taken
| yo | habría preferidoI would have prefered | nosotros | habríamos preferidowe would have prefered |
| tú | habrías preferidoyou would have prefered | vosotros | habríais preferidoyou all would have prefered |
| él/ella/Ud. | habría preferidohe/she would have prefered | ellos/Uds. | habrían preferidothey would have prefered |
Future subjunctive — legal and proverbial only: adonde fueres, haz lo que vieres
| yo | prefiriere(should) I prefer | nosotros | prefiriéremos(should) we prefer |
| tú | prefirieres(should) you prefer | vosotros | prefiriereis(should) you all prefer |
| él/ella/Ud. | prefiriere(should) he/she prefer | ellos/Uds. | prefirieren(should) they prefer |
Imperative (do it) — orders and requests; there is no yo form
| yo | — | nosotros | prefiramoslet's prefer |
| tú | prefiereprefer! | vosotros | preferidprefer! |
| él/ella/Ud. | prefieraprefer! | ellos/Uds. | prefieranprefer! |
Imperative (don't) — no + subjunctive — never the affirmative form with no in front
| yo | — | nosotros | no prefiramoslet's not prefer |
| tú | no prefierasdon't prefer | vosotros | no prefiráisdon't prefer |
| él/ella/Ud. | no prefieradon't prefer | ellos/Uds. | no prefierandon't prefer |

Red = the form breaks the regular pattern. Everything in black you could have worked out from the endings alone.
I — the speaker
| Presente | prefieroI prefer |
| Perfecto | he preferidoI have prefered |
| Subj. presente | prefiera(that) I prefer |
| Subj. perfecto | haya preferido(that) I have prefered |
| Futuro | preferiréI will prefer |
| Condicional | preferiríaI would prefer |
| Fut. perfecto | habré preferidoI will have prefered |
| Cond. perfecto | habría preferidoI would have prefered |
| Subj. futuro | prefiriere(should) I prefer |
| Indefinido | preferíI prefered |
| Imperfecto | preferíaI used to prefer |
| Pluscuamp. | había preferidoI had prefered |
| Subj. imperf. | prefiriera(that) I prefered |
| Subj. -se | prefiriese(that) I prefered |
| Subj. pluscuamp. | hubiera preferido(that) I had prefered |
| Pret. anterior | hube preferidoI had prefered |
| Imperativo | — |
| Imper. negativo | — |
we — the speaker plus others
| Presente | preferimoswe prefer |
| Perfecto | hemos preferidowe have prefered |
| Subj. presente | prefiramos(that) we prefer |
| Subj. perfecto | hayamos preferido(that) we have prefered |
| Futuro | preferiremoswe will prefer |
| Condicional | preferiríamoswe would prefer |
| Fut. perfecto | habremos preferidowe will have prefered |
| Cond. perfecto | habríamos preferidowe would have prefered |
| Subj. futuro | prefiriéremos(should) we prefer |
| Indefinido | preferimoswe prefered |
| Imperfecto | preferíamoswe used to prefer |
| Pluscuamp. | habíamos preferidowe had prefered |
| Subj. imperf. | prefiriéramos(that) we prefered |
| Subj. -se | prefiriésemos(that) we prefered |
| Subj. pluscuamp. | hubiéramos preferido(that) we had prefered |
| Pret. anterior | hubimos preferidowe had prefered |
| Imperativo | prefiramoslet's prefer |
| Imper. negativo | no prefiramoslet's not prefer |
you (informal) — one person you are familiar with
| Presente | prefieresyou prefer |
| Perfecto | has preferidoyou have prefered |
| Subj. presente | prefieras(that) you prefer |
| Subj. perfecto | hayas preferido(that) you have prefered |
| Futuro | preferirásyou will prefer |
| Condicional | preferiríasyou would prefer |
| Fut. perfecto | habrás preferidoyou will have prefered |
| Cond. perfecto | habrías preferidoyou would have prefered |
| Subj. futuro | prefirieres(should) you prefer |
| Indefinido | preferisteyou prefered |
| Imperfecto | preferíasyou used to prefer |
| Pluscuamp. | habías preferidoyou had prefered |
| Subj. imperf. | prefirieras(that) you prefered |
| Subj. -se | prefirieses(that) you prefered |
| Subj. pluscuamp. | hubieras preferido(that) you had prefered |
| Pret. anterior | hubiste preferidoyou had prefered |
| Imperativo | prefiereprefer! |
| Imper. negativo | no prefierasdon't prefer |
you all — informal plural, Spain only
| Presente | preferísyou all prefer |
| Perfecto | habéis preferidoyou all have prefered |
| Subj. presente | prefiráis(that) you all prefer |
| Subj. perfecto | hayáis preferido(that) you all have prefered |
| Futuro | preferiréisyou all will prefer |
| Condicional | preferiríaisyou all would prefer |
| Fut. perfecto | habréis preferidoyou all will have prefered |
| Cond. perfecto | habríais preferidoyou all would have prefered |
| Subj. futuro | prefiriereis(should) you all prefer |
| Indefinido | preferisteisyou all prefered |
| Imperfecto | preferíaisyou all used to prefer |
| Pluscuamp. | habíais preferidoyou all had prefered |
| Subj. imperf. | prefirierais(that) you all prefered |
| Subj. -se | prefirieseis(that) you all prefered |
| Subj. pluscuamp. | hubierais preferido(that) you all had prefered |
| Pret. anterior | hubisteis preferidoyou all had prefered |
| Imperativo | preferidprefer! |
| Imper. negativo | no prefiráisdon't prefer |
he, she, you (formal) — one other person — formal you shares it
| Presente | prefierehe/she prefers |
| Perfecto | ha preferidohe/she has prefered |
| Subj. presente | prefiera(that) he/she prefers |
| Subj. perfecto | haya preferido(that) he/she has prefered |
| Futuro | preferiráhe/she will prefer |
| Condicional | preferiríahe/she would prefer |
| Fut. perfecto | habrá preferidohe/she will have prefered |
| Cond. perfecto | habría preferidohe/she would have prefered |
| Subj. futuro | prefiriere(should) he/she prefer |
| Indefinido | prefirióhe/she prefered |
| Imperfecto | preferíahe/she used to prefer |
| Pluscuamp. | había preferidohe/she had prefered |
| Subj. imperf. | prefiriera(that) he/she prefered |
| Subj. -se | prefiriese(that) he/she prefered |
| Subj. pluscuamp. | hubiera preferido(that) he/she had prefered |
| Pret. anterior | hubo preferidohe/she had prefered |
| Imperativo | prefieraprefer! |
| Imper. negativo | no prefieradon't prefer |
they, you all — several others — plural you shares it
| Presente | prefierenthey prefer |
| Perfecto | han preferidothey have prefered |
| Subj. presente | prefieran(that) they prefer |
| Subj. perfecto | hayan preferido(that) they have prefered |
| Futuro | preferiránthey will prefer |
| Condicional | preferiríanthey would prefer |
| Fut. perfecto | habrán preferidothey will have prefered |
| Cond. perfecto | habrían preferidothey would have prefered |
| Subj. futuro | prefirieren(should) they prefer |
| Indefinido | prefirieronthey prefered |
| Imperfecto | preferíanthey used to prefer |
| Pluscuamp. | habían preferidothey had prefered |
| Subj. imperf. | prefirieran(that) they prefered |
| Subj. -se | prefiriesen(that) they prefered |
| Subj. pluscuamp. | hubieran preferido(that) they had prefered |
| Pret. anterior | hubieron preferidothey had prefered |
| Imperativo | prefieranprefer! |
| Imper. negativo | no prefierandon't prefer |

Red = the form breaks the regular pattern. Everything in black you could have worked out from the endings alone.