In Costa Rica, signing a document digitally is not just a matter of convenience: it carries the same legal weight as putting your signature on paper. That is possible thanks to a solid legal framework that has been in force for more than twenty years and that few companies take full advantage of.
This guide explains exactly what a digital signature is, what the law says, who issues it, and why ignoring it costs your company money.
Law 8454: the legal foundation
The Law on Certificates, Digital Signatures and Electronic Documents (Law 8454), in force since 2005, establishes that digitally signed documents have full legal validity in the country. They are not merely equivalent to a handwritten signature — they are equal before the law.
The key points of the rule:
- A digitally signed document cannot be repudiated by the signer. The law presumes that whoever holds the private key is the one who signed.
- Signed electronic documents have the same evidentiary force as physical ones in any judicial or administrative proceeding.
- Public institutions are required to accept them: municipalities, ministries, the public registry, the CCSS, among others.
The role of the BCCR
The Central Bank of Costa Rica (BCCR) operates as the root authority of the country’s public key infrastructure (PKI). This means that it is the BCCR that certifies the entities authorized to issue digital signatures.
Currently, digital signatures for natural persons are distributed mainly through the identity card system of the Supreme Electoral Tribunal (TSE) and through device certificates issued by certification entities registered with the BCCR.
For practical purposes: if your company uses a signing system backed by the BCCR chain of trust, the resulting documents have full legal validity in Costa Rica.
Types of electronic signature in Costa Rica
Not all electronic signatures are the same. It helps to distinguish:
| Type | Description | Legal validity |
|---|---|---|
| Certified digital signature (BCCR) | Uses a certificate issued by an entity authorized by the BCCR | Maximum — comparable to a handwritten signature |
| Advanced electronic signature | Binds the signer through verifiable technical mechanisms | High — admissible in most contexts |
| Simple electronic signature | Any electronic mark of identity (e.g. a name at the bottom of an email) | Limited — requires additional contractual context |
ArcaSign lets you sign in two ways: by hand (a drawn electronic signature, with no certificate and no installation) or with a BCCR certified digital signature, the highest legal tier in the country. Today the certified signature is available for Costa Rica; the drawn signature meets the electronic-signature standards of most countries.
Which documents can be signed digitally?
The short answer: almost all of them. Law 8454 excludes only those acts that by their nature require a solemn notarial form or that a specific law requires to be a public instrument (deeds of real estate ownership, wills, adoptions, among others).
Documents your company probably signs by hand today and could sign digitally:
- Service and employment contracts
- Purchase and service orders
- Non-disclosure agreements (NDAs)
- Powers of attorney and internal authorizations
- Reports and board meeting minutes
- Invoices and supplementary accounting documents
- Official communications with public institutions
Why many companies still do not use it
Despite the mature legal framework, adoption in the Costa Rican private sector remains low. The most common reasons we hear:
- “I’m not sure it’s really valid.” It is, since 2005.
- “Getting a certificate is complicated.” It used to be complicated. Today there are platforms that abstract away that complexity.
- “My clients or counterparties don’t use it.” Not everyone needs their own certificate. With ArcaSign, your counterparty can sign by hand right from the browser, with no certificate and no installation; and when you need the highest legal tier, you sign with your BCCR certificate.
- “I prefer to have the signed paper in my hands.” A digital document signed with the BCCR is harder to forge than a physical one. And it can’t get lost in a filing cabinet.
The cost of not signing digitally
Every time a document runs through the print → sign → scan → send → file cycle, your company spends on average between 15 and 40 minutes of administrative time, plus paper, toner, and physical space. Multiply that by the number of documents you sign per month.
Digital signatures are not just legal: they are a decision about operational efficiency.
If you want to see how it works in practice, create a free account on ArcaSign and sign your first document today.