Once you have decided to set up a company in Uruguay, the operational stage requires constant interaction with the Tax Office (DGI): filing returns, issuing electronic invoices, checking your tax status, appointing representatives and obtaining certificates. If you imagine this means going to an office every time, you will be glad to know that Uruguay has a robust digital system: certified digital signatures and DGI’s online services. These tools let you run your company 100% online, from anywhere in the world, meeting your tax obligations quickly and securely. In this article we explain how to obtain a digital signature, what you can do with it in DGI’s online services, the requirements for each type of signatory and how to use these services to keep your company up to date. If you are a non-resident foreigner or manage several companies, the digital signature will be a key ally.

What Is a Digital Signature and Why Does Your Company Need It?

A digital signature in Uruguay is a cryptographic mechanism that guarantees the signer’s identity and the integrity of the document. Legally, an advanced electronic signature with a certificate from an accredited provider has the same validity as a handwritten signature. To run a company, it is extremely useful because many DGI procedures — VAT, IRAE and IRPF returns, appointing representatives, filing financial information — require electronic authentication of the taxpayer or its representatives.

In practice, you will need a digital signature if you are the legal representative of an SRL, a director of a corporation (SA), the owner of a sole proprietorship or the administrator of an SAS. For non-resident foreigners, it avoids having to travel to Uruguay every time a return needs signing or data needs changing with the tax authority.

Digital signature certificates are issued by the National Post Office (Correo Uruguayo) and other certification providers accredited by the Electronic Certification Regulatory Unit (UCE). Uruguayan ID card holders can also use the electronic ID card (cédula with chip) as a digital signature. For electronic invoicing, companies also use an electronic certificate to sign their invoices (CFEs), usually managed through their invoicing provider.

Types of Digital Certificates

There are two main categories:

• Individual certificate: identifies a natural person. It is obtained by the legal representative (managing partner, director, authorised attorney), who uses it to sign personal documents and those of the company they represent.
• Company certificate: identifies the company directly. It is mainly used for technical purposes, such as signing electronic invoices; for most DGI procedures, the signature of an individual with sufficient powers is what counts.

For most entrepreneurs, it is enough for the legal representative, or the person registered with DGI as the company’s representative, to obtain a personal certificate. With it they can access DGI’s online services and act on behalf of every company for which they are an authorised representative.

Requirements and Validity

To obtain a digital certificate you will generally need:

• A valid Uruguayan ID card or, for foreigners, the identity document accepted by the certification provider.
• A personal email address.
• Payment of the certificate fee (check the current amount with the provider).

Certificates have a limited validity (usually a few years) and must be renewed before they expire. A common mistake is letting the certificate expire in the middle of the return season, which blocks filings until it is renewed.

DGI Online Services

DGI’s online services portal concentrates the digital services for taxpayers: companies, professionals and individuals. Logging in with your digital signature or with a user ID and password (depending on the procedure), you can file returns, manage representatives, check your tax status and obtain certificates.

A note on terminology: in DGI’s classification, “CEDE” is a category of taxpayers (alongside “Large Taxpayers” and “No CEDE”), which determines certain obligations and filing calendars. Most small companies are classified as “No CEDE”. It is not the name of the online platform.

Once your company is registered with DGI — which can be done within a day through the “Empresa en el Día” system when you set up any of the types of companies in Uruguay — and you have your RUT (tax ID), you can activate online access. To do so, you need a digital signature or online credentials and to be registered as the company’s representative in DGI’s system.

Main Services Available

• Electronic invoicing: enrolment in the e-invoicing system and, for small volumes, DGI’s free invoicing solution for CFEs (e-Ticket, e-Factura, etc.).
• Filing returns: VAT, IRAE, IRPF withholdings, IRAE advance payments, wealth tax. Each return has its own mandatory calendar.
• Checking your tax status: debts, payments made and the status of filings. Useful before requesting certificates for tenders or banks.
• Managing representatives and attorneys: appointing or revoking permissions so that third parties (accountants, advisers) can file on your behalf.
• Obtaining the DGI single certificate: proof that you are up to date with DGI, frequently required in public tenders, banking procedures and credit applications.
• Downloading receipts and records: proof of payment, proof of filing and deadline notices.

To act as your company’s representative, you log in with your personal credentials and select the company’s RUT. The system checks that you are authorised. If you are an attorney or external accountant, the company must first authorise you.

Mandatory Electronic Invoicing: What You Need

Since 2012 Uruguay has gradually made electronic invoicing mandatory, and today it applies to practically all companies, whatever legal structure you choose (SRL, SA, SAS, sole proprietorship). The e-Ticket replaced paper receipts and the e-Factura replaced traditional invoices.

To issue electronic invoices you need:

• To be registered with DGI with an active RUT and the corresponding economic activity (CIIU code).
• To complete the enrolment as an electronic issuer.
• To use authorised invoicing software or DGI’s free solution (useful for entrepreneurs with low volumes).
• To meet the format and minimum data rules (company name, RUT, date, description, VAT itemised at 22% or 10% as applicable).

DGI’s free solution is simple but limited. Most companies with medium or high volumes prefer private platforms (ERPs with e-invoicing modules) that automate issuing, emailing the client, accounting records and returns. If your volume is low at first, the free solution is enough to start without additional costs.

How to Obtain Your Digital Signature Step by Step

The process depends on your situation: if you are a Uruguayan resident with a valid ID card it is straightforward; if you are a non-resident foreigner, additional identity validation steps are required.

For Uruguayan Residents

The usual procedure is:

• Step 1: book an appointment with the certification provider (for example, Correo Uruguayo) or use your electronic ID card.
• Step 2: present your valid ID card and a personal email address.
• Step 3: the provider validates your identity and issues the certificate.
• Step 4: pay the certificate fee.
• Step 5: install the certificate or the required software on your computer or device, following the provider’s instructions.
• Step 6: configure your browser or application to use the certificate, following the official technical guides.

Once installed, you can access DGI’s online services with your certificate and start operating.

For Non-Resident Foreigners

If you are a foreigner who does not live in Uruguay, obtaining a digital signature requires validating your identity with the provider. Options:

• Travelling to Uruguay: visiting the provider in person with your passport and the documents showing your link to the Uruguayan company.
• Working through an attorney in Uruguay: granting an apostilled notarial power of attorney to a notary or local professional, who can act on your behalf with DGI and other bodies using their own digital signature. A digital certificate is personal and must not be shared.
• Remote options: some providers offer remote identity validation in certain cases; check the current availability for foreign representatives.

The power of attorney route is the most common among foreigners who run several companies or prefer not to travel. Specialised professional advice makes the process much easier and avoids rejections due to incomplete documentation or poorly drafted powers.

Day-to-Day Operation with a Digital Signature: Practical Cases

Some concrete situations where the digital signature and DGI’s online services are your daily tools:

Filing VAT: periodically you must settle the VAT you charged minus the VAT on your purchases. You log in, complete the corresponding return with your sales and purchases, the system calculates the balance payable or the credit in your favour, and you submit it. If there is an amount payable, you pay it electronically through the authorised networks or bank debit. Without online access, this would require in-person procedures or delegating to an accountant with authorisation.

Annual IRAE return: at the end of the financial year (usually 31 December), your company must file its IRAE return with the financial statements, income statement and tax adjustments. The general rate is 25% of net taxable income. The filing is made online, and the digital signature authenticates it. Companies with directors abroad or non-resident shareholders particularly value being able to sign from any country.

Invoicing a foreign client: if your company exports services, you issue an export e-Invoice (e-Factura de Exportación) without VAT. You enter the client’s details, a description of the service and the amount in the agreed currency in your invoicing software (connected to DGI), and send it. DGI receives and validates the electronic document, and your client receives a valid tax document in PDF and XML format, without you having to be physically in Uruguay.

Frequently Asked Questions

Can I run my Uruguayan company without a digital signature?

Not sustainably in practice. Some procedures can be delegated to an accountant authorised before DGI, but to file returns and manage your tax situation directly, online access with a digital signature is essential. Delegating everything to third parties means higher recurring costs and less direct control over your company.

What happens if my digital signature expires and I do not renew it in time?

You lose access to the procedures that require that electronic authentication until you renew the certificate. This can delay your tax obligations and lead to the corresponding penalties or surcharges. It is advisable to start the renewal at least a month before expiry.

Can an attorney use their own digital signature to manage my company?

Yes, provided you have formally authorised that attorney or accountant before DGI. Once authorised, they log in with their own credentials and select your company’s RUT to act on its behalf, without needing to share your personal certificate (which is in fact not advisable for security reasons).

Conclusion

The digital signature and DGI’s online services are the backbone of modern tax management in Uruguay, allowing entrepreneurs and business owners — resident or foreign — to run their companies remotely, quickly and securely. From electronic invoicing to filing returns and obtaining certificates, virtually all interaction with DGI can be handled online once you have your digital certificate. At sociedadesanonimas.uy we help our clients, local and foreign, obtain their digital signature and set up online access so that their company is ready to operate fully from day one.