Portugal
Timeline
| 2021-01 | B2G e-invoicing mandatory for large suppliers (CIUS-PT) — large companies |
| 2026-01-01 | Qualified electronic signature required for PDF invoices to remain valid — all issuers of PDF invoices |
| 2027-01-01 | Remaining SME phases of B2G e-invoicing complete (per current schedule) — micro and small companies |
How to connect
- Register with a Peppol-certified Service Provider such as Verteco.
- Verify your company (NIF) and confirm identifier ownership.
- Your NIF is registered on the network and published to the SMP.
- Receive immediately; send via portal, e-mail gateway or API.
Identifier schemes
9946 | Portuguese VAT number (NIF) | 9946:PT123456789 |
Supported formats
- CIUS-PT (UBL 2.1)
- Peppol BIS Billing 3.0 (cross-border)
Reporting & CTC model
4-corner
No national Peppol Authority; eSPap runs the public-sector e-invoicing framework (FE-AP) with CIUS-PT. Service providers bridge Peppol/UBL flows into the national platforms.
Popular integrations
Frequently asked questions
Is B2B e-invoicing mandatory in Portugal?
No — B2G is mandated (phased) and B2B remains voluntary, though the certified-software, ATCUD and signature rules already push businesses toward structured invoicing.