Haber is the auxiliary verb behind every compound tense in Spanish, which makes its subjunctive one of the most useful to know. Its present subjunctive stem is hay-, and the full conjugation is irregular from the start.
Conjugation
| Subject | Present Subjunctive |
|---|---|
| yo | haya |
| tú | hayas |
| él / ella / usted | haya |
| nosotros | hayamos |
| ellos / ellas / ustedes | hayan |
Don't confuse haya (from haber) with halla (from hallar, "to find") or with allá ("over there"). The three words are pronounced almost identically in Latin America.
Use 1: Present Perfect Subjunctive
The most frequent use of haya is as the auxiliary of the present perfect subjunctive, which combines haya with the past participle of the main verb.
- haya hablado — "that I have spoken"
- hayas comido — "that you have eaten"
- haya salido — "that he has left"
This tense describes a completed action inside a clause that triggers the subjunctive, and it's typically used when the action happened before the time frame of the main clause.
Espero que hayas comido antes de venir.
I hope you've eaten before coming.
Es posible que hayamos perdido las llaves.
It's possible that we've lost the keys.
Me alegra que hayan terminado el proyecto a tiempo.
I'm glad they've finished the project on time.
Use 2: Impersonal Haya (Instead of Hay)
In the indicative, hay is the impersonal form of haber that means "there is" or "there are." In the subjunctive, that form becomes haya, and it follows the same invariable rule: it never changes for number, even when the thing being discussed is plural.
Es posible que haya un problema con el servidor.
It's possible that there's a problem with the server.
Notice that haya stays singular in form even though "tráfico" or "comida" is being described, and the same is true when the noun is plural:
No creo que haya muchas personas en la fiesta.
I don't think there are many people at the party.
The Full Auxiliary Paradigm
If you already know the indicative of haber, the comparison helps make the subjunctive stick.
| Subject | Indicative | Subjunctive |
|---|---|---|
| yo | he | haya |
| tú | has | hayas |
| él / ella / usted | ha | haya |
| nosotros | hemos | hayamos |
| ellos / ellas / ustedes | han | hayan |
More Examples
Me alegra mucho que hayas venido a visitarme.
I'm very happy that you've come to visit me.
Es increíble que hayan construido la casa en seis meses.
It's incredible that they've built the house in six months.
Continue with saber and dar, the last two irregulars in this section.
Related Topics
- Subjunctive of SerB1 — Ser has a fully irregular present subjunctive: sea, seas, sea, seamos, sean.
- Subjunctive of IrB1 — Ir has a completely irregular present subjunctive built on the stem vay-.
- Subjunctive of Saber and DarB1 — Two short but tricky irregular verbs in the subjunctive: saber (sepa) and dar (dé).