Understanding the difference between the verbs ser and estar is a major milestone for Catalan learners.

Both of these verbs translate to “to be” in English.

They’re used in completely different contexts.

Using the wrong one can easily change the entire meaning of your sentence.

I’ll show you exactly how to tell them apart with simple rules.

Conjugating ser and estar in the present tense

You must know how to conjugate these irregular verbs before using them.

Here’s how both verbs look in the present tense.

Note that in recent updates to Catalan orthography, the accent mark was removed from soc.

You’ll still see it written as sóc in older texts and materials.

When to use ser in Catalan

The verb ser is primarily used for permanent characteristics and identities.

You should use ser to describe the fundamental essence of a person, place, or thing.

Use this verb to talk about professions, nationalities, relationships, and physical traits.

You also use ser to talk about time, dates, and days of the week.

When to use estar in Catalan

The verb estar is used for temporary states and conditions.

You should use estar to describe feelings, moods, and physical conditions that can change.

If a state is a result of an action or circumstance, estar is the correct choice.

You also use estar along with a gerund to express continuous actions happening right now.

The location rule for ser and estar

This specific rule frequently trips up learners who have previously studied Spanish.

In standard Central Catalan, you must use the verb ser to talk about the location of people, places, and things.

This directly contrasts with Spanish, which strictly uses estar for location.

The verb estar is only used for location in Catalan if it means “staying” in a place for a period of time.

Keep in mind that regional variations exist across Catalan-speaking territories.

In the Valencian region, speakers heavily use estar for location due to linguistic contact with Spanish.

If you’re learning standard Catalan, you should stick to using ser for location.

Adjectives that change meaning depending on the verb

Some Catalan adjectives completely change their meaning based on which verb you pair them with.

Using ser implies a permanent quality of the subject.

Using estar implies a temporary state or condition.

The adjective bo (good) is a perfect example of this rule in action.

The adjective viu (alive/lively) works exactly the same way.

Pay close attention to these dual-meaning adjectives as you read and listen to native Catalan materials.