Firmar means 'to sign', and it is a regular -ar verb useful in formal, work and travel contexts. Firma aquí, por favor (sign here, please), firmé el contrato (I signed the contract). Because signing documents comes up in role-plays about jobs, banking and official situations, firmar is a practical verb to know, especially at A-Level. The related noun la firma means both 'signature' and 'firm/company'. As a regular -ar verb the conjugation is predictable, so the verb is simply a matter of recognising when a signature is involved.
Quick facts
Firmar (to sign) is a regular -ar verb.
Real sentences across different tenses — the kind of thing you'd actually say or write.
Firma aquí (sign here).
Firmé el contrato (I signed the contract).
Useful in jobs and banking role-plays.
La firma (signature / firm).
Fixed expressions worth knowing — they come up in listening, reading and writing tasks.
Idiomatic expressions
firmar is a regular -ar verb — it follows the standard -ar pattern in every tense. That makes it a good one to drill: if you know firmar, you know the template for all regular -ar verbs.
Type conjugations from memory and get instant feedback. That's how you actually build the automatic recall the exam needs — not from reading tables.
Practice firmar now →Three questions, no account needed. Type the form, then press Enter or tap Check.
yo: firmo, tú: firmas, él: firma, nosotros: firmamos, vosotros: firmáis, ellos: firman
The past participle is firmado (he firmado) and the gerund is firmando (estoy firmando).
Firmar is on the AQA and Eduqas GCSE Spanish vocabulary lists, but not on Edexcel.
Verbs that are easy to confuse with firmar or that behave like it.
Firmar is on the AQA and Eduqas GCSE Spanish vocabulary lists, but not on Edexcel. Compare the exam boards.
Written by Daniel Holmes for GCSE & A-Level Spanish students.