ser vs estar
The short rule: ser is for what something is — identity, origin, characteristics, permanent states. estar is for what something is like right now and where it is. A useful test: if the thing could be different tomorrow, it is probably estar. So soy professor (I am a teacher) but estoy cansado (I am tired); el hotel es barato (the hotel is cheap) but el hotel está cerca (the hotel is nearby). The two big exceptions are location, which always takes estar, and the result of a change, which also takes estar: la puerta está abierta — someone opened it.
The rule that covers most cases
Spanish has two verbs for to be, and choosing between them is the single most common thing new learners get wrong. The rule that covers the overwhelming majority of cases is this:
| ser | estar | |
|---|---|---|
| identity | Ella es médica. (She is a doctor.) | — |
| origin | Soy de Oaxaca. (I'm from Oaxaca.) | — |
| character | Es simpático. (He's friendly.) | — |
| material | Es de madera. (It's wood.) | — |
| time and dates | Hoy es martes. (It's Tuesday.) | — |
| price | Es caro. (It's expensive.) | — |
| state | — | Está cansado. (He's tired.) |
| mood | — | Está alegre. (She's happy.) |
| location | — | Está en casa. (He's at home.) |
| weather | — | Está lloviendo. (It's raining.) |
| in progress | — | Estamos trabajando. (We're working.) |
| result of a change | — | La puerta está abierta. (The door is open.) |
The test that resolves most cases
Ask whether the thing could be different tomorrow. If it could, it is estar. If it defines what the thing is, it is ser.
Es aburrido — he's boring. That's a character, it won't change. Está aburrido — he's bored. Right now, and possibly not in ten minutes. La sopa está caliente — the soup is hot; it'll cool down. La sopa es caliente — soup is a hot dish; that's what soup is.
The two exceptions worth memorising
- Location always takes estar. Never ser. Mi casa está en Boston, not mi casa es en Boston. This is the one people most often get wrong when they translate from English.
- The result of a change takes estar. If somebody did something to it, it's estar: la puerta está abierta (someone opened it) versus la puerta es abierta (it's an open door, by design). Same for a broken, dirty or full thing: el vaso está roto (it's broken, after an event) versus el vaso es de cristal (it's made of glass).
When the two verbs genuinely overlap, ser is the default. If you're unsure and getting it wrong is low-cost, use ser.
The two verbs that are nearly always ser
With two verbs, estar is the default. But two of them almost always take ser, and the exceptions are the point:
| Verb | Uses | Example |
|---|---|---|
| ser | almost always ser | Son las tres. (It's three o'clock.) |
| estar | almost always estar | Está en la cocina. (He's in the kitchen.) |
Ser is used for dates, times, weather reports and most impersonal statements: Hoy es lunes, Mañana es el 3 de enero, Está bien, Es posible. The reason is that these aren't states of a particular thing — they're facts, and ser is the verb for facts.
What this looks like in the wild
One detail that trips people up and is worth knowing early: estar and ser have completely different past tenses in almost every form. Fue (he was) and estuvo (he was there, he stayed) are different words. Eres (you are) and estás (you are) are different words. This means the choice has to be made in the present tense too, before you conjugate — you can't decide at the end.
The practical version: the ser conjugation and the estar conjugation are both here as reference, but the choice between them happens in your head, in real time, while you're trying to say something. Which is the same place the rest of your Spanish lives.
Questions
Which do I use by default?
Ser. It covers identity, origin, characteristics, dates, times and prices, and it's the safe choice when you're unsure. Use estar when you mean right now or where.
Is 'está de pie' an exception?
Yes — estar de pie (standing) and estar de viaje (travelling) take estar, because they describe a state rather than a characteristic. There are a small number of these set phrases, and they're worth learning as whole phrases rather than as rules.
What about 'ser + adjective' vs 'estar + adjective' for feelings?
Estar for feelings (estoy feliz — I'm happy right now) and ser for character (soy una persona feliz — I'm a happy person). Spanish makes this distinction more consistently than English does, which is why it feels strange at first and then starts to feel obvious.
Do I have to learn this perfectly to be understood?
No. Being understood is the goal, and context does a lot of the work — people will understand está aburrido when you meant es aburrido. But it is the difference between sounding like a learner and sounding like someone who lives there, and it's one of the first things people notice about your Spanish.
Sources
- Gramática de la lengua española. Real Academia Española, 2009.
Keep going
- ser conjugationThe full conjugation of the Spanish verb ser: present, preterite, imperfect, future, conditional, subjunctive and imperative, with the irregular forms and when to use ser instead of estar. Free, no sign-up.
- estar conjugationThe full conjugation of the Spanish verb estar: present, preterite, imperfect, future, conditional, subjunctive and imperative, with the irregular forms and a clear guide to estar versus ser. Free, no sign-up.
- How long does it really take to learn Spanish?Realistic numbers for how long it takes an English speaker to learn Spanish, level by level, from the Foreign Service Institute and CEFR estimates, and what actually makes the hours count.