Electronic Invoicing in Paraguay (SIFEN): What Changes for Entrepreneurs

If you have a business in Paraguay—or are planning to start one—there's a major technological change underway that you cannot ignore: electronic invoicing. Paraguay is gradually rolling out the SIFEN (Sistema Integrado de Facturación Electrónica Nacional) system, which replaces traditional paper invoices with electronic documents validated in real time by the DNIT. This is not a distant project—it's a current reality that already affects many businesses and will extend to all companies in the coming years.

This guide explains what SIFEN is, how it works, who it concerns in 2026, and what it specifically changes for an expatriate entrepreneur in Paraguay.

SIFEN: What is it?

The End of Paper Timbrado

Historically, invoicing in Paraguay operated on a timbrado system: the DNIT (formerly SET) issued a billing authorization (timbrado number) with a validity period, and you had your invoice books printed by an authorized printer. Each invoice was a pre-printed paper document, sequentially numbered, and filled out manually or by computer. As detailed in our tax declaration guide, the timbrado and its renewal were part of the routine obligations of any taxpayer.

SIFEN is gradually replacing this paper system with 100% electronic invoicing. Instead of printing pre-numbered paper invoices, you issue electronic documents (DE—Documentos Electrónicos) that are transmitted in real time to the DNIT via the internet, validated instantly, and stored in the national system. No more invoice books, no more authorized printers, no more periodic timbrado renewals.

How it Works

The electronic invoicing process via SIFEN occurs in several steps:

1. Issuance: You create your invoice in SIFEN-compatible invoicing software (either commercial software or the free eKuatia system provided by the DNIT).
2. Digital Signature: The invoice is electronically signed with a digital certificate in your name (or your company's name).
3. Transmission to DNIT: The signed invoice is sent in real time to the DNIT server via an internet connection.
4. Validation: The DNIT verifies the document's compliance (format, mandatory data, sequential number) and returns an approval code (CDC—Código de Control).
5. Delivery to Client: The validated invoice is sent to the client via email or made available in a portal. The client can verify the invoice's authenticity on the DNIT website using the CDC.
6. Storage: The DNIT retains a copy of all electronic invoices—you must also keep your copies for the legal duration (minimum 5 years).

Types of Electronic Documents

SIFEN doesn't just apply to sales invoices. It covers all fiscal documents:

• Factura electrónica: The standard invoice for sales of goods and services.
• Factura electrónica de exportación: For exports of goods and services (0% VAT).
• Nota de crédito electrónica: For credit notes and refunds.
• Nota de débito electrónica: For upward price adjustments.
• Nota de remisión electrónica: For delivery notes.
• Autofactura electrónica: For purchases from suppliers not in the SIFEN system.

Who is Concerned and When?

Gradual Rollout

SIFEN is not being imposed on all businesses overnight. The DNIT is rolling out the system in phases, starting with the largest companies and gradually expanding the scope:

• Phase 1 (already underway): Large companies and taxpayers designated by the DNIT (high invoicing volumes, strategic sectors). These companies are already required to issue electronic invoices.
• Phase 2 (expanding): Medium-sized companies and additional taxpayers added by DNIT resolution. The scope is regularly expanding.
• Voluntary Phase: Any company can voluntarily join SIFEN before being compelled to—and some do so for the practical benefits (no more timbrado renewals, no more books to print).
• Final Phase (upcoming): All companies and taxpayers with a RUC will be required to issue electronic invoices. The exact date for this generalization has not yet been set, but the DNIT is resolutely moving in this direction.

What about small expat LLCs?

If you have an LLC in Paraguay with a modest invoicing volume (a few invoices per month), you are probably not yet within the mandatory scope of SIFEN in 2026. You can still use the traditional paper timbrado system.

But this situation is temporary. The DNIT's goal is to transition 100% of taxpayers to SIFEN eventually. Preparing now—by understanding the system and choosing the right software—is a smart investment that will save you a rushed transition when the obligation comes.

What SIFEN Changes for an Expatriate Entrepreneur

The End of Timbrado Hassles

If you've been through the traditional timbrado process, you know how cumbersome it is: going to the authorized printer, waiting for the books to be printed, monitoring the expiration date, renewing on time or risk not being able to invoice. With SIFEN, all that disappears. Your billing authorization is permanent (linked to your digital certificate), your invoices are issued from your computer, and renewal no longer exists.

Total Traceability

Each electronic invoice is recorded in real time in the DNIT system. This means total traceability of your transactions—which is a double-edged sword. On one hand, you have impeccable fiscal documentation, automatically archived and verifiable. On the other hand, the DNIT has real-time visibility into your commercial activity.

For a compliant expatriate—properly declared income, compliant VAT, up-to-date accounting—this traceability is an advantage. It strengthens your tax compliance record and provides automatic proof of your economic activity in Paraguay—an element of tax residency substance.

Simplified Accounting

Electronic invoices are structured documents (XML format) that accounting software can automatically import. No more manually entering each invoice into the accounting ledgers—the process is automated. Our accounting service at €30/month integrates the management of electronic invoices and their reconciliation with your monthly VAT and annual IRACIS declarations.

Compliance with Clients and Suppliers

More and more Paraguayan businesses are transitioning to SIFEN. If your suppliers or clients are already using electronic invoicing, they expect compliant documents from you. Conversely, receiving an electronic invoice from your supplier simplifies your VAT deduction—the document is automatically verifiable and compliant.

How to Prepare for SIFEN

Step 1: Obtain a Digital Certificate

To issue electronic invoices, you need a digital certificate (firma digital) issued by an authorized certification service provider in Paraguay. This certificate is the equivalent of your electronic signature—it authenticates that the invoice was indeed issued by you (or your company). The cost is modest (50 to 150 USD per year) and obtaining it takes a few days.

Step 2: Register for SIFEN with the DNIT

Registration for SIFEN is done through the DNIT's Marangatu portal. You must first be in the test phase (ambiente de prueba) to validate that your software communicates correctly with the DNIT server, then move to the production phase (ambiente de producción) to issue real invoices.

Step 3: Choose Invoicing Software

You have two options:

eKuatia: DNIT's Free Software

The DNIT provides free electronic invoicing software called eKuatia. It is a functional solution for small businesses with low invoicing volumes. No software investment needed—you create your invoices directly in the web interface.

• Advantages: Free, compliant by definition (developed by the DNIT), suitable for small volumes.
• Limitations: Basic interface, no integration with other management software, limited features for businesses with advanced needs.

Commercial Software

Many Paraguayan software publishers offer SIFEN-compatible electronic invoicing software with advanced features: inventory management, accounting integration, customer management, dashboards, automatic export to Marangatu. Leading publishers include Ciao (very popular in Paraguay), FactuRed, Tessai, and others.

• Cost: 20 to 100 USD/month depending on the software and volume.
• Advantages: Advanced features, accounting integration, technical support, modern interface.
• Recommended for: Businesses with regular invoicing volumes or integrated management needs.

Step 4: Train Your Team (or Your Accountant)

If you have employees who issue invoices (salespeople, administrative assistants), they must be trained in the new system. If you are the only one invoicing, the learning curve is simple—the software is intuitive. In any case, our accountant can manage the transition and ensure that your electronic invoices are perfectly compliant from day one.

Concrete Advantages of SIFEN for Expats

No More Expired Timbrado = Less Stress

How many entrepreneurs in Paraguay have experienced the nightmare of an expired timbrado? You have an invoice to issue, you realize your timbrado expired last week, and you urgently need to request a new one—a process that takes several days. During this time, you cannot invoice. With SIFEN, this risk completely disappears.

Invoicing From Anywhere

With electronic invoicing software and an internet connection, you can issue invoices from anywhere—your office in Asunción, your home in Encarnación, a café in Buenos Aires, or your hotel during a trip to Europe. No more needing your physical invoice book on hand.

Automatic Reconciliation with Declarations

Invoices issued via SIFEN are automatically available in the Marangatu system. Your accountant can reconcile your sales and purchase invoices with your monthly VAT declarations in a few clicks—instead of manually entering each invoice. This is a significant time saver that results in more accurate accounting and reduced risk of error.

Irrefutable Fiscal Proof

Each electronic invoice is timestamped, digitally signed, and archived by the DNIT. In the event of a tax audit—by the DNIT or by the tax authorities in your home country—you have irrefutable proof of your commercial activity in Paraguay. This is a major strengthening of your tax residency and compliance record.

Easier Access to Credit and Public Markets

Paraguayan banks and credit institutions value businesses that use SIFEN—electronic invoicing history is proof of transparency and solidity. If you are considering a bank loan or if your company wants to bid on public tenders, electronic invoicing is a concrete advantage.

Points of Vigilance

Internet Dependence

Electronic invoicing requires an internet connection to transmit invoices to the DNIT. In case of an internet outage (it happens in Paraguay, especially during tropical storms), you cannot issue invoices in real time. SIFEN provides a contingency mode that allows you to issue invoices offline and transmit them later—but this is an exceptional procedure, not the norm.

Our internet guide in Paraguay always recommends having a backup connection (4G in addition to fiber)—this is especially true if your invoicing depends on SIFEN.

Digital Certificate Security

Your digital certificate is your electronic fiscal identity. If someone gains access to it, they can issue invoices on your behalf. Protect it as you would your bank password: do not share it, store it in a secure location, and change the PIN regularly.

Transition Costs

The migration to SIFEN has a cost—modest but real:

• Digital certificate: 50 to 150 USD/year
• Invoicing software: 0 USD (eKuatia) to 100 USD/month (commercial software)
• Training: 0 to 200 USD (depending on whether you train yourself or via a service provider)
• Setup time: a few days to 2 weeks

The total cost of the transition is a few hundred dollars—largely offset by the time savings and hassle reduction in the long term.

SIFEN and Our Services

What We Do for You

Our accounting service at €30/month covers support for the transition to SIFEN:

• Advice on the invoicing software best suited to your volume and activity.
• Support in obtaining the digital certificate.
• Assistance with SIFEN registration via Marangatu.
• Monthly reconciliation of your electronic invoices with your VAT declarations.
• Regulatory watch on SIFEN developments and new obligations.

When SIFEN becomes mandatory for your LLC, you will already be ready—without stress, improvisation, or delay.

SIFEN in the Complete Ecosystem

Electronic invoicing integrates into the complete ecosystem of your activity in Paraguay:

• Tax Residency (from €1,400, 3 months): The foundation that gives you access to the RUC and the tax system.
• LLC Creation (€1,500, 1 week): Your company that issues and receives invoices.
• Paraguayan Bank Account: That receives payments corresponding to invoices issued.
• SIFEN: That dematerializes and secures your invoicing.
• Accounting (€30/month): That reconciles invoices with tax declarations.

Conclusion: SIFEN, a Modernization to Embrace

Electronic invoicing in Paraguay is not a threat—it is a welcome modernization that simplifies the lives of entrepreneurs, strengthens fiscal traceability, and eliminates the hassle of paper timbrado. For a French-speaking expatriate accustomed to European digital systems, the transition to SIFEN is natural and easy.

Don't suffer it when it becomes mandatory—anticipate it. Choose your software, obtain your digital certificate, and rely on our accountant for a smooth transition. SIFEN is the future of invoicing in Paraguay—it's better to be among the first to adopt it rather than among the last to be forced into it.

Do you have questions about electronic invoicing in Paraguay? Contact our team for personalized support—from setting up your LLC to implementing SIFEN.