What it is
Rules for signing documents electronically
BOE step 7 of 7 · PassedIt is a government bill. Introduced by the Government. It was introduced on 10 June 2003. Introduced by: Gobierno.
Official title: Government bill on electronic signature.
Source: Congreso de los Diputados, file 121/000158· updated 11 Nov
Automatic summary, not yet reviewed
- The law regulates electronic signatures, their legal validity, and certification services, without changing the rules on the validity of contracts.
- There are three types of signature: electronic, advanced electronic, and recognized electronic. Only the recognized one, based on a recognized certificate and created with a secure device, has the same value as a handwritten signature.
- Providing certification services requires no prior authorization and operates under free competition. Providers only need to notify the Ministry of Science and Technology when they start their activity.
- Providers issuing recognized certificates must verify the applicant's identity, meet security obligations, and take out liability insurance of at least €3,000,000.
- The electronic national identity card proves the holder's identity and allows signing documents electronically. All individuals and entities must recognize its validity.
- Violations are classified as minor, serious, or very serious, with fines of up to €600,000. Very serious violations can also lead to a ban on operating in Spain for up to two years.
Who it affects
- Individuals and businesses that sign documents electronically: They can use electronic signatures; the recognized one has the same value as a handwritten signature.
- Certification service providers: They must meet security, information, and financial guarantee obligations, and are liable for damages they cause.
- Public administrations: They may impose additional conditions for using electronic signatures in their procedures.
- Holders of the electronic national identity card: Their ID card can be used to prove their identity and sign documents electronically.
Words worth knowing
- Prestador de servicios de certificación (certification service provider)
- A person or company that issues electronic certificates and offers services related to electronic signatures.
- Certificado electrónico (electronic certificate)
- A document signed by a provider that links signature verification data to a person and confirms their identity.
- Certificado reconocido (recognized certificate)
- A certificate issued under stricter requirements for identity checks and provider guarantees.
- Dispositivo seguro de creación de firma (secure signature creation device)
- A program or system that creates the electronic signature with guarantees of secrecy and protection against forgery.
- Declaración de prácticas de certificación (certification practice statement)
- A public document where the provider details the conditions and obligations it meets when managing certificates.
It summarizes the law as published in the BOE. It is written by artificial intelligence and may contain mistakes: the official text is what counts. Read the official text · How we make summaries
Where it stands
How far did it get?
It took 7 of 7 steps. It reached BOE, and today it is passed.
- Introduced10 June 2003Someone registers the text in the Congreso.
- Admitted17 June 2003The Bureau of the Congreso accepts it and, for a members’ bill, the plenary decides whether to consider it.
- Amendments20 June 2003Groups propose changes.
- Committee7 July 2003A committee goes through the text in detail.
- Plenary16 September 2003All 350 deputies vote.
- Senate25 September 2003The Senate can pass it, amend it or veto it.
- BOE11 December 2003It is published in the Official State Gazette (BOE) and comes into force.
See the 11 official steps on a timeline
Was there a plenary vote?
We have no plenary vote linked to this law in the Congreso’s data.
What happens next
What happens now?
It is law, or will be once published in the BOE. It comes into force on the date its own text sets.
Published in the BOE: Law 59/2003, of 19 December, on electronic signature.
Sources
Where does all this come from?
- Congreso de los Diputados, file 121/000158
Official title, type, author, dates and stage.
Retrieved 11 November 2026
- BOE, BOE-A-2003-23399
The law as published.
Retrieved 11 November 2026
- The data comes from the open files of the Congreso, the Senate and the BOE, unaltered.
- Each deputy’s province is the one of their seat on the day of the vote.
- We only say “passed” or “rejected” when the majority needed is certain; otherwise we say which side had more votes.