Empowering Developers with Reliable Compliance Across Europe
Integration Partners
Build once, deploy everywhere. fiskaltrust empowers POS developers with powerful open-source middleware, modular APIs and expert-led onboarding to ensure seamless fiscalization compliance across Europe.
fiskaltrust’s Middleware offers a robust, flexible, and cost-effective solution for businesses seeking compliance with diverse fiscal regulations across Europe. Its standardized interface, multi-platform support, and open-source transparency make sure that businesses can focus on their main tasks while ensuring legal compliance, thereby providing peace of mind and operational efficiency.
fiskaltrust's Solutions for Portugal
In Portugal, the SAF-T PT (Standard Audit File for Tax Purposes) and electronic invoicing requirements define how POS systems must operate to ensure transparency, data integrity, and compliance with local tax regulations.
Key Requirements in Portugal:
- SAF-T Export Obligation: POS systems must be capable of generating the SAF-T(PT) file in the official XML structure, on request or as scheduled by the tax authority.
- Certified Software: POS software must be certified by the Portuguese Tax Authority (AT). Certification requires strict adherence to layout, data retention, and security rules.
- Unique Document Identification: Each invoice and receipt must have a unique, sequential number generated according to official formats and registered with AT.
- QR Code and ATCUD: Since 2022, documents must include a QR code and ATCUD (unique document code) printed on all fiscal receipts.
Key Benefits for Developers
- Standardised API: Save development effort with one integration point for SAF-T, e-invoice, and signature logic.
- Certified Compliance: fiskaltrust supports all certified requirements, including ATCUD, QR codes, and invoice sequencing.
- Multi-Vendor Hardware Support: Work with different printers or cloud setups using the same codebase.
- Open Source Middleware: Avoid vendor lock-in and stay fully transparent.
- Statement: Open API. Portuguese-compliant. AT-certified. Zero vendor lock-in.
Integration with the fiskaltrust Middleware API
Developers integrate once with the fiskaltrust Middleware to handle SAF-T generation, QR code creation, and ATCUD management automatically.
- Handles both on-premise and cloud setups.
- Works across multiple hardware configurations.
- Keeps your POS logic independent of country-specific fiscal quirks.
Compliance Automation
Once integrated:
- The Middleware generates documents with the correct QR code and ATCUD.
- It creates SAF-T PT files ready for upload or on-demand inspection.
- Ensures legally valid invoice sequencing and secure storage for audit.
Continuous EU-Wide Compliance
fiskaltrust tracks updates from the Autoridade Tributária (AT) and updates the Middleware accordingly.
- Developers don’t need to follow every legislative change.
- Updates are handled centrally, reducing QA time and regression risk.
- Systems remain compliant without impacting your POS architecture.
Stable API. Open source. Audit-proof receipts. No vendor lock-in.
API
Modular API Design & Scalable
fiskaltrust APIs are based on a service-oriented architecture, enabling integration at multiple layers.
The fiskaltrust APIs plug straight into our open-source Middleware, taking care of signing, receipt chaining and export logic so you don’t have to. With both HTTP(S) and gRPC support, they fit cleanly into any architecture whether this is cloud-native or on-prem. Everything’s audit-proof by design and the PosDealer API lets you automate onboarding and deployments at scale.
Modular API Design & Scalable
- POS System API: Receipts, payments, digital export
- Receipt API: Create and manage digital receipts
- PosDealer API: Automate onboarding and deployment for POS dealers
Open-Source
Open-Source fiskaltrust Middleware
Leverage fiskaltrust's robust, open-source middleware to integrate fiscalization compliance into your POS solutions across Europe.
The fiskaltrust open-source middleware solution designed to streamline fiscalization compliance, digital receipts, payments and secure data archiving. It connects Point-of-Sale systems with local legal requirements through a harmonized API and offers scalability and flexibility across Europe’s diverse fiscal environments.
Why fiskaltrust Open-Source?
- Seamless POS API Integration (REST/SOAP/JSON)
- Auto-updating to comply with new regulations
- Multi-country fiscalization logic
- Modular architecture (Queue, SCU, Helpers)
- Secure and auditable transaction signing
- Transparent, fully documented code
Why Middleware Matters –
Simplify Compliance with fiskaltrust
Simplify Compliance with fiskaltrust Freemium
fiskaltrust
Middleware
Mangement
- Portal
- CloudAPI
- Self-Hosting
Compliance
- Open-Source
- Receipt Chaining & Signing
- Local Journal
- Local Data Export
Receipt
- Open-Source
- Cloud based, interactive
visualization of receipt - InStore-App
Payment
- Open-Source
- Cloud based Terminal Gateway
fiskaltrust Academy – Empowering Compliance & Innovation
Academy
fiskaltrust Academy
The fiskaltrust Academy equips businesses, developers, and partners with the knowledge and skills to navigate fiscalization effortlessly.
fiskaltrust Academy – a structured training and onboarding program designed to help POS creators and integration partners easy implement fiskaltrust.Middleware while ensuring compliance with fiscal regulations across Europe.
Sometimes it’s easier to just talk.
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