Quick answer
| Alternative | For whom | Platform/CCFE cost | Needs integration? |
|---|---|---|---|
| e-Kuatia’i | Eligible small taxpayer, 1 location and 1 billing point | Platform and CCFE free via DNIT | No, you work in the DNIT portal |
| Own system connected to e-Kuatia/SIFEN | Companies with their own ERP/system | CCFE via PCSC + development/maintenance cost | Yes |
| Technology provider/API | Companies that want to outsource part of the integration | CCFE via PCSC + provider fee | Yes, depending on the architecture |
DNIT does not certify or authorize SIFEN technology providers; hiring one is optional.
Do you need to pay to integrate SIFEN?
DNIT offers two main ways to issue electronic documents (DNIT — electronic invoicing channels):
- e-Kuatia’i: DNIT’s free solution for eligible small taxpayers with a single location and one billing point (DNIT — e-Kuatia’i).
- e-Kuatia/SIFEN through own system: the taxpayer uses or develops software conforming to DNIT’s technical specifications to generate and transmit electronic documents.
Within the second approach, a company can develop the integration internally or contract a technology provider, API, integrator, or ERP that already supports SIFEN. Hiring that third party is the taxpayer’s decision, not an official third option offered by DNIT. DNIT itself explicitly clarifies that it does not authorize Technology Service Providers to deliver electronic invoicing services in SIFEN (DNIT — frequently asked questions); the taxpayer can choose to contract them or develop their own solution.
Qualified Trust Services Providers (PCSC) are different: they are officially authorized to issue qualified electronic certificates (AC Raíz — Authorized PCSCs). They should not be confused with a SIFEN technology provider.
If your operation meets e-Kuatia’i requirements and you do not need to integrate invoicing with other systems, you don’t have to pay for an integration to start issuing electronic invoices. Paying starts to make sense once volume, the number of billing points, or the need to invoice automatically from your own system justifies it.
Cost of the digital certificate
If you use e-Kuatia’i
For taxpayers eligible for e-Kuatia’i, the CCFE can be managed free of charge at DNIT tax offices (DNIT — digital signature). e-Kuatia’i is intended for small taxpayers with a single location and one billing point declared in their RUC — medium and large taxpayers cannot use this modality.
If you use e-Kuatia with your own or integrated system
To operate through e-Kuatia/SIFEN with your own system, the certificate must be obtained through an authorized Qualified Trust Services Provider (PCSC). The price depends on the provider, so check it directly through their current channels (list of PCSCs at AC Raíz). The F1 tax certificate has a maximum validity of one year, according to one authorized PCSC’s certification policy documentation (DPC — VIT S.A.) — it’s best to confirm the exact price and renewal timelines directly with your chosen provider, as we found no general range documented well enough to rely on here.
Cost of software or subscription
Public prices verified August 14, 2026. These are references from specific providers and do not constitute an official rate card or statistical estimate of the entire Paraguayan market. The plans are not directly comparable either: they vary in included volume, API, users, locations, support, and features.
Among providers with public pricing that we reviewed:
- BillPy: plans from Gs. 79,000/month; API from Gs. 119,000/month (billpy.com.py/planes).
- FacturaSend: public plans of Gs. 100,000, Gs. 225,000, Gs. 400,000, and Gs. 525,000 monthly depending on volume (facturasend.com.py).
- FactAPI: public plans of Gs. 210,000, Gs. 320,000, and Gs. 700,000 monthly (factapipy.com).
We found published plans ranging from Gs. 79,000 a month up to Gs. 700,000, but they don’t cover the same scope. Don’t read this as “the market price” — get a quote based on what your operation actually needs.
As a public reference for a one-time-payment option, FactAPI currently lists an on-premise license at USD 2,000 (factapipy.com). This is the price from one specific provider, not a market average.
On the cost of a complete implementation: as a commercial reference, ImagineSoft published in March 2026 an estimate of USD 2,000 to USD 15,000 in initial investment for a medium-sized company (ImagineSoft — what is SIFEN). That figure comes from that specific provider’s estimate and should not be interpreted as a rate card or independent market average for Paraguay.
Prices vary widely between providers because they depend on how much development your current system needs in order to connect, and on whether the provider charges by volume of issued documents.
Implementation time, testing, and DNIT enablement
There is no single implementation timeline. Published commercial references vary widely depending on scope: integrating an API into an existing system can require considerably less work than adapting or deploying a complete ERP. So treat provider-published timelines as references for a specific scope, not as an official DNIT deadline.
One requirement does come from the regulator rather than from any provider: although the DNIT FAQ clarifies that use of the test environment is not mandatory in itself, for enablement the taxpayer must demonstrate that they conducted minimal and sufficient testing of SIFEN’s services and features with satisfactory results (DNIT — frequently asked questions, DNIT — guides, Testing Guide for e-Kuatia, DNIT). Money alone doesn’t solve this: enablement rests with the electronic invoicer and with meeting the process requirements, not with DNIT certifying or approving any particular software or technology provider.
In practice, the real timeline depends heavily on how organized your current system is. A company running a modern, well-documented ERP gets through enablement faster than one working with legacy systems or manual processes.
Stamping and what exactly a technology provider does
Stamping is an authorization granted by the Tax Administration, managed through DNIT/Marangatu procedures (General Resolution No. 23/19, DNIT) — it is not something a technology provider “generates” or grants on its own.
What a technology provider does (when a company chooses to hire one instead of developing internally) is act as middleware between the invoicing system and SIFEN: the software can generate the XML, sign it electronically, transmit it to SIFEN, process the responses, and generate the KuDE, and correctly using the data from the electronic stamp authorized by DNIT.
What happens if you miss the transmission deadline to SIFEN?
Once your electronic document is signed, DNIT sets a 72-hour deadline to transmit it to SIFEN, counted from the date and time noted in the electronic/digital signature (General Resolution No. 23/19, DNIT).
Failing to comply with the electronic invoicing rules (continuing to issue paper invoices after the deadline, issuing without transmitting to SIFEN, or using a system that does not meet technical specifications) exposes the company to penalties. We are not going to put a penalty amount here: the figures circulating on various commercial sites are not backed by a verifiable primary legal source at the time of writing, so we prefer not to repeat a number we cannot confirm. If your company is near a DNIT deadline, consult with your accountant or legal advisor about the specific penalties applicable to your case.
For the complete legal framework of what DNIT requires from a business in Paraguay (not just electronic invoicing), we already covered it in what an e-commerce needs in Paraguay — we do not repeat it here.
When is it worth paying for a SIFEN integration?
- Small taxpayer eligible for e-Kuatia’i, one location and one billing point, low volume with no ERP integration need: e-Kuatia’i should be the first option to evaluate before paying for an integration.
- Company that needs to issue automatically from ERP, POS, e-commerce, or own system: consider an e-Kuatia/SIFEN integration, built either internally or through a technology provider. An integration with your system starts to pay for itself when it cuts manual work, removes duplicated tasks, and reduces the risk of operational errors in invoicing.
- Complex operations, high volume, or particular processes: compare technology provider/API, integration on your existing ERP, and custom development based on total cost, dependency, maintenance, and operational needs. If your situation calls for full control of the system, Flexora builds projects like this — see custom software.
If your business needs to connect SIFEN to your current system and you prefer not to build that integration from scratch, Flexora takes on automation and integration projects like this — see automations and integrations.