Subjunctive of Ir | Spanish (Latin America) Grammar

Ir ("to go") has one of the most distinctive subjunctive conjugations in Spanish. Like ser, it can't be derived from the yo indicative form (voy). Instead, it uses a unique stem vay- that appears nowhere else in the language.

Conjugation

Subject	Present Subjunctive
yo	vaya
tú	vayas
él / ella / usted	vaya
nosotros	vayamos
ellos / ellas / ustedes	vayan

The stem vay- is followed by the standard -a, -as, -a, -amos, -an endings. None of the forms has a written accent.

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Say it out loud: vaya, vayas, vaya, vayamos, vayan. The rhythm is almost musical and very easy to memorize as a chant.

Why the Stem is Vay-

Historically, the subjunctive of ir derives from the Latin verb vadere ("to go"), while its indicative present comes from ire. Spanish kept both sets of forms alive but assigned them to different moods. That's why voy, vas, va look nothing like vaya, vayas, vaya — they're essentially two different verbs woven together.

Examples

Ir appears in subjunctive clauses whenever someone expresses a wish, doubt, emotion, or command about movement or future plans.

Mi madre quiere que vaya al mercado.

My mother wants me to go to the market.

Es importante que vayas al médico pronto.

It's important that you go to the doctor soon.

Ojalá que vayamos a la playa este fin de semana.

I hope we go to the beach this weekend.

No creo que vayan a venir hoy.

I don't think they're going to come today.

Dudo que vaya a llover mañana.

I doubt it's going to rain tomorrow.

Ir a + Infinitive in the Subjunctive

A particularly common use of the subjunctive of ir is in the construction ir a + infinitive ("to be going to do something"). When this construction needs to go in a subjunctive clause, only ir changes.

Indicative: Voy a estudiar. ("I'm going to study.")
Subjunctive: Quiero que vayas a estudiar. ("I want you to be going to study" → colloquially "I want you to go study.")

Dudo que vayan a terminar el trabajo a tiempo.

I doubt they're going to finish the work on time.

Espero que vayas a pensarlo bien.

I hope you're going to think about it carefully.

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This is why subjunctive ir is one of the first irregulars students learn to use fluently. It shows up in almost every sentence about future intentions framed with a wish or doubt.

Vayamos as "Let's Go"

The nosotros form vayamos can be used as a soft suggestion meaning "let's go," though in everyday Latin American Spanish the more common forms are vamos (indicative) or the imperative vayámonos for a polite "let's get going."

Form	Use
vamos	everyday "let's go" (very common)
vayamos	formal "let's go" or subjunctive in a clause
no vayamos	"let's not go" (uses subjunctive)

Es mejor que no vayamos tan tarde.

It's better that we not go so late.

Common Mistakes

Students sometimes incorrectly form the subjunctive of ir based on the yo form voy, writing things like voya or voyamos. These are wrong. The subjunctive always uses the stem vay-, never the indicative stem.

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One quick check: if you can say "that I/you/he/we/they go" in English, Spanish uses vaya, vayas, vaya, vayamos, vayan. No exceptions.

Practice Mini-Paradigm

Try seeing all five forms in one paragraph. Even though this is artificial, reading the forms in context makes them stick much faster than staring at a table.

Mi tía quiere que yo vaya al supermercado, que tú vayas al banco, que mi primo vaya al correo, y que nosotros vayamos juntos a la farmacia.

My aunt wants me to go to the supermarket, you to go to the bank, my cousin to go to the post office, and us to go together to the pharmacy.

Next up is haber, the auxiliary verb whose subjunctive haya is used to form the present perfect subjunctive.