CIUS-PT is Portugal's core invoice usage specification: national rules on top of the European standard EN 16931 for electronic invoices to public bodies. Klarbon opens and writes UBL-based CIUS-PT 2.1.1 invoices in beta. It does not run CIUS-PT business-rule checks or establish acceptance by eSPap.
What does CIUS-PT cover?
| Property | Value |
|---|---|
| Base | EN 16931 |
| Defined by | eSPap, under Portaria 289/2019 of 5 September 2019 |
| Klarbon-supported syntax | UBL with the CIUS-PT 2.1.1 identifier |
| Klarbon-supported version | CIUS-PT 2.1.1, in beta |
eSPap also publishes sector good-practice guides for information the standard has no field for, such as vehicle registrations or electricity consumption (eSPap, in Portuguese).
CIUS-PT, SAF-T and ATCUD
Portugal has several invoice-related formats that are easy to confuse:
| Term | What it is |
|---|---|
| CIUS-PT | the structure of one e-invoice to a public body |
| SAF-T (PT) | an accounting and invoicing data export for the tax authority |
| ATCUD and invoice QR code | a unique document code and QR code printed on invoices |
What does Klarbon do with CIUS-PT?
| Task | Status |
|---|---|
| Open a UBL invoice that declares CIUS-PT 2.1.1 | beta, in open an e-invoice |
| Use it as the source for a conversion | beta |
| Write a UBL invoice that declares CIUS-PT 2.1.1 | beta |
| Check against the CIUS-PT Schematron rules | not yet |
Klarbon prepares XML output, not the Portuguese invoice of record. It is not certified invoicing software, does not add an ATCUD or QR code and does not send invoices to the AT, the FE-AP platform or any public body. Acceptance by eSPap is not claimed. This is general information, not tax advice.
Related
Frequently asked questions
What is CIUS-PT?
The Portuguese core invoice usage specification, the national rules on top of the European standard EN 16931 for electronic invoices to public bodies. eSPap, the public administration's shared services entity, defines it under Portaria 289/2019.
Which CIUS-PT syntax does Klarbon support?
Klarbon reads and writes UBL invoices with the CIUS-PT 2.1.1 identifier, in beta. This does not establish acceptance by eSPap.
Which CIUS-PT version does Klarbon support?
CIUS-PT 2.1.1 in UBL, in beta. Supported reading and writing do not establish acceptance by eSPap.
Is CIUS-PT the same as SAF-T (PT)?
No. CIUS-PT describes one electronic invoice. SAF-T (PT) is an accounting and invoicing data export for the tax authority.