Portugal's B2G E-Invoicing — CIUS-PT & PEPPOL Ready
B2G e-invoicing to Portuguese public bodies is mandatory and uses the CIUS-PT (UBL 2.1) format via eSPap. Cauri handles standards-based, PEPPOL-ready invoicing with NIF/NIPC checks. Free to start, no credit card.
Why Portuguese Businesses Choose Cauri
CIUS-PT B2G Ready
Standards-based UBL 2.1 output aligned with the CIUS-PT specification for invoicing Portuguese public bodies via eSPap.
NIF/NIPC Checks
NIF/NIPC format (9 digits) + VIES pre-checks. Users remain responsible for confirming Autoridade Tributária records.
Cross-Border PEPPOL
Send compliant e-invoices to 32 European countries via the PEPPOL network. EUR pricing throughout.
Portuguese E-Invoicing Compliance
B2G e-invoicing to Portuguese public bodies is mandatory in the structured CIUS-PT (UBL 2.1) format, exchanged via eSPap or designated providers; the obligation has been extended to SMEs and micro-enterprises (timeline subject to ongoing changes). There is no general B2B e-invoicing clearance mandate as of 2026. Portugal also operates a separate fiscal-control regime (AT-certified billing software, ATCUD, QR code, SAF-T (PT)). Cauri focuses on standards-based and cross-border invoicing:
- CIUS-PT-aligned UBL 2.1 generation for B2G invoicing
- PEPPOL Access Point for cross-border European trade
- NIF/NIPC format + VIES pre-checks (user confirms Autoridade Tributária records)
- EN 16931 / UBL 2.1 and PEPPOL BIS 3.0 formatting
Simple Pricing
Transparent pricing in EUR. Archive-Vault on Business/Enterprise; Free/Pro users handle retention.
Unlimited features are subject to fair-use and technical rate limits. Archive-Vault retention applies to Business/Enterprise; Free/Pro users remain responsible for statutory archival and have a 30-day export window (90 days on Business/Enterprise).
Free
Free forever for basic invoicing
- Unlimited Invoices
- Unlimited Quotes
- PEPPOL Network Access
- Email Support
- Role & Permissions
- Multi-Currency
- Receive E-Invoices
- Recurring Invoices
- Priority Support
- Archive Vault
- Full Accountant Panel
- Bulk Report Generation
- Client Health Dashboard
Starter
Perfect for freelancers
- Unlimited Invoices
- Unlimited Quotes
- PEPPOL Network Access
- Email Support
- Role & Permissions
- Multi-Currency
- Receive E-Invoices
- Recurring Invoices
- Priority Support
- Archive Vault
- Full Accountant Panel
- Bulk Report Generation
- Client Health Dashboard
Professional
For growing businesses
- Unlimited Invoices
- Unlimited Quotes
- PEPPOL Network Access
- Email Support
- Role & Permissions
- Multi-Currency
- Receive E-Invoices
- Recurring Invoices
- Priority Support
- Archive Vault
- Full Accountant Panel
- Bulk Report Generation
- Client Health Dashboard
Enterprise
For large organizations
- Unlimited Invoices
- Unlimited Quotes
- PEPPOL Network Access
- Email Support
- Role & Permissions
- Multi-Currency
- Receive E-Invoices
- Recurring Invoices
- Priority Support
- Archive Vault
- Full Accountant Panel
- Bulk Report Generation
- Client Health Dashboard
Accounting Free
Basic accounting panel
- Unlimited Invoices
- Unlimited Quotes
- PEPPOL Network Access
- Email Support
- Role & Permissions
- Multi-Currency
- Receive E-Invoices
- Recurring Invoices
- Priority Support
- Archive Vault
- Full Accountant Panel
- Bulk Report Generation
- Client Health Dashboard
Accounting Starter
For small accounting firms
- Unlimited Invoices
- Unlimited Quotes
- PEPPOL Network Access
- Email Support
- Role & Permissions
- Multi-Currency
- Receive E-Invoices
- Recurring Invoices
- Priority Support
- Archive Vault
- Full Accountant Panel
- Bulk Report Generation
- Client Health Dashboard
Accounting Professional
For growing firms
- Unlimited Invoices
- Unlimited Quotes
- PEPPOL Network Access
- Email Support
- Role & Permissions
- Multi-Currency
- Receive E-Invoices
- Recurring Invoices
- Priority Support
- Archive Vault
- Full Accountant Panel
- Bulk Report Generation
- Client Health Dashboard
Accounting Enterprise
For large firms
- Unlimited Invoices
- Unlimited Quotes
- PEPPOL Network Access
- Email Support
- Role & Permissions
- Multi-Currency
- Receive E-Invoices
- Recurring Invoices
- Priority Support
- Archive Vault
- Full Accountant Panel
- Bulk Report Generation
- Client Health Dashboard
Frequently Asked Questions
Is e-invoicing mandatory in Portugal?
For B2G (invoicing public bodies), yes — suppliers must issue structured CIUS-PT (UBL 2.1) e-invoices via eSPap, an obligation that has been extended to SMEs and micro-enterprises (timeline subject to ongoing changes). As of 2026 there is no general B2B e-invoicing clearance mandate. Please confirm the latest requirements and your own obligations.
What about ATCUD, QR codes, SAF-T and certified software?
Portugal runs a separate fiscal-control regime: invoices generally must be issued by AT-certified billing software and carry an ATCUD code and a QR code, with monthly SAF-T (PT) Billing reporting. These are distinct from PEPPOL/CIUS-PT e-invoicing. Please check the current Autoridade Tributária rules and your software certification obligations.
How does NIF/NIPC validation work?
We run NIF/NIPC format checks (9 digits) and EU VIES pre-checks to flag issues before you send. Please confirm official Autoridade Tributária records for final accuracy.
Can I invoice clients in other EU countries?
Yes! Through PEPPOL, you can send e-invoices to 32 European countries, including all EU members. Cross-border format conversion is handled automatically.
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