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E-invoicing mandate

E-invoicing in Portugal

A sourced summary of the structured e-invoicing program in Portugal. It is a starting point, not a compliance certificate or proof of delivery.

At a glance

Scope
Business-to-government
Status
Phasing in
First issuing phase
2021-01-01
Network or channel
Recipient-specific public-procurement channel; FE-AP is available but not universal
Format
CIUS-PT structured e-invoice

What this means for you

Portugal's B2G e-invoicing mandate is phased by supplier size. Large companies have had to issue structured invoices for covered public contracts since January 1, 2021. Micro, small and medium-sized companies, and public entities acting as co-contractors, must do so from January 1, 2027. Separately, PDF invoices are treated as electronic invoices for tax-law purposes through December 31, 2026. There is no general B2B or B2C structured-invoice mandate, and suppliers must confirm the receiving public entity's channel.

What FreeBillGen can verify

For eligible saved invoices, FreeBillGen can prepare generic OASIS UBL and UN/CEFACT CII mappings and run its named internal checks. These mappings are not EN 16931, Factur-X, Peppol, national-CIUS or clearance-platform validation. FreeBillGen does not transmit them through a provider network.

Check this route in Invoice Passport

Official sources used

General information only; not legal, tax, accounting, conformance, or delivery-provider advice. Confirm the current scope, technical profile, and channel with the official source or a qualified advisor.