Firmar in the Present Tense

Introduction

The present tense of firmar — «to sign» — is the form you will reach for most often. It talks about habits, facts and what is happening right now, and it is the first tense to master for this verb. firmar is a regular -ar verb verb, so the present follows the -ar endings. On this page you will find the full present-tense table, how the forms are built, five usage rules with examples, a comparison with the preterite, more example sentences, the mistakes learners make in this tense, an eight-question quiz and answers to common questions. A good first sentence is «Yo firmo todos los días» — I sign every day.

Firmar in the Present Tense — full table

Person Form
yo firmo
tú firmas
él/ella/Ud. firma
nosotros/as firmamos
vosotros/as firmáis
ellos/ellas/Uds. firman

Gerund: firmando · Past participle: firmado

How the present tense of firmar is formed

Take the stem firm — the infinitive firmar without its -ar ending — and add the present endings. The table below shows the build for every person, using the actual stem of each form:

Person Stem Ending Form
yo firm -o firmo
tú firm -as firmas
él/ella/Ud. firm -a firma
nosotros/as firm -amos firmamos
vosotros/as firm -áis firmáis
ellos/ellas/Uds. firm -an firman

The present is the only tense where the yo form ends in -o for all three verb classes, which makes it a useful anchor: if you know firmo, you can build the rest of the table from the stem and the endings above.

When to use the present tense of firmar

1. Daily routines and habits

The most common use: things you do regularly. Time words like todos los días, siempre and a veces are the giveaway.

Yo firmo todos los días. — I sign every day.

2. General truths and facts

Use the present for things that are true in general, not just today. No time expression is needed — the statement stands on its own.

Él firma con mi familia. — He signs with my family.

3. What is happening right now

For an action in progress, the present works on its own in Spanish, and you can also use estar + the gerund firmando for emphasis. Both are correct; the gerund version stresses that it is happening this very moment.

Nosotros firmamos por la mañana. — We sign in the morning.

4. Scheduled near-future plans

Spanish often uses the present for a fixed plan in the near future, where English would say «going to». A time expression such as mañana or la semana que viene makes the future meaning clear.

Tú firmas en el trabajo. — You sign at work.

5. Narrating and commenting

The present is the tense of live commentary and of stories told as if they were happening now. It keeps the listener in the moment, and it is the tense of instructions and explanations.

Ellos firman a veces. — They sign sometimes.

Present Tense vs Preterite: how to choose

The present and the preterite answer different questions. The present says what happens in general or what is happening now; the preterite says what happened once and is over. Compare the pairs below — same verb, different time frame:

  • Present: Yo firmo todos los días. — I sign every day.

  • Preterite: Ayer yo firmé por la tarde. — Yesterday I signed in the afternoon.

  • A routine against a single finished event. The present describes the habit; the preterite reports the one time it happened.

  • Present: Él firma por la mañana. — He signs in the morning.

  • Preterite: Ayer él firmó por la tarde. — Yesterday He signed in the afternoon.

  • What happens in the morning in general, against what happened yesterday afternoon. The time expression decides the tense.

  • Present: Nosotros firmamos con mi familia. — We sign with my family.

  • Preterite: La semana pasada nosotros firmamos dos veces. — Last week We signed twice.

  • A shared habit against a shared finished event. If the action repeats, use the present; if it happened once and ended, use the preterite.

Example sentences: firmar in the present

  1. Yo firmo todos los días. — I sign every day.
  2. Tú firmas en el trabajo. — You sign at work.
  3. Él firma con mi familia. — He signs with my family.
  4. Nosotros firmamos por la mañana. — We sign in the morning.
  5. Vosotros firmáis cuando hay tiempo. — You sign when there is time.
  6. Ellos firman a veces. — They sign sometimes.
  7. Yo firmo en el trabajo. — I sign at work.
  8. Él firma todos los días. — He signs every day.

Common mistakes with firmar in the present

1. Forgetting the accent on the vosotros form

Wrong: Vosotros firmais.

Right: Vosotros firmáis.

The vosotros form firmáis carries a written accent on the ending. Without it the word is misspelled, and in speech the stress falls in the wrong place.

2. Using the present for a finished event

Wrong: Ayer yo firmo.

Right: Ayer yo firmé.

Ayer belongs with the preterite. The present firmo talks about now or about a habit; a finished yesterday needs firmé.

3. Using the yo form for every person

Wrong: Ellos firmo.

Right: Ellos firman.

Each person has its own form: ellos take firman, not the yo form firmo. The -n ending on firman is what marks the third-person plural.

4. Using the present instead of the progressive

Wrong: Estoy firmo.

Right: Estoy firmando.

After estar, Spanish needs the gerund: estoy firmando. The conjugated present firmo never follows estar.

Quiz: firmar in the present

Test yourself on the present tense of firmar. Choose the correct answer, then check the key below.

1. What is the tú form of firmar in the present indicative?

- (a) firma
- (b) firmamos
- (c) firmas
- (d) firmo

2. What is the él/ella/Ud. form of firmar in the present indicative?

- (a) firma
- (b) firmamos
- (c) firmas
- (d) firmo

3. What is the nosotros/as form of firmar in the present indicative?

- (a) firmamos
- (b) firma
- (c) firmo
- (d) firmas

4. What is the vosotros/as form of firmar in the present indicative?

- (a) firma
- (b) firmáis
- (c) firmas
- (d) firmo

5. What is the ellos/ellas/Uds. form of firmar in the present indicative?

- (a) firma
- (b) firman
- (c) firmas
- (d) firmo

6. What is the yo form of firmar in the present indicative?

- (a) firmamos
- (b) firmo
- (c) firma
- (d) firmas

7. What is the gerund of firmar?

- (a) firmar
- (b) firmado
- (c) firmando
- (d) firmo

8. What is the past participle of firmar?

- (a) firmando
- (b) firmé
- (c) firmar
- (d) firmado

Answer key

1. (c) — In the present indicative, the tú form of firmar is firmas. The other options are the same tense but different persons. 2. (a) — In the present indicative, the él/ella/Ud. form of firmar is firma. The other options are the same tense but different persons. 3. (a) — In the present indicative, the nosotros/as form of firmar is firmamos. The other options are the same tense but different persons. 4. (b) — In the present indicative, the vosotros/as form of firmar is firmáis. The other options are the same tense but different persons. 5. (b) — In the present indicative, the ellos/ellas/Uds. form of firmar is firman. The other options are the same tense but different persons. 6. (b) — In the present indicative, the yo form of firmar is firmo. The other options are the same tense but different persons. 7. (c) — The gerund of firmar is firmando. It is used with estar for the progressive: «Estoy firmando». 8. (d) — The past participle of firmar is firmado. It follows haber in all the perfect tenses: «he firmado».

Frequently asked questions

Is firmar regular in the present?

Yes — firmar is regular in the present. The stem firm never changes and the endings are -o, -as, -a, -amos, -áis, -an for -ar verbs (with the matching sets for -er and -ir verbs).

What is the yo form of firmar in the present?

It is firmo. Use it for talking about yourself right now.

How is the present different from the preterite for firmar?

The present (firmo) describes habits and what is happening now; the preterite (firmé) reports a single finished event. «Yo firmo todos los días» is a habit, while «Ayer yo firmé» is one event that ended yesterday.

Can I use the present of firmar with estar and the gerund?

Yes — «Estoy firmando» means «I am signing right now», with the emphasis on the action in progress. The plain present «Yo firmo» is also correct for what is happening now; the gerund version simply stresses the moment.

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