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 Austria
In Austria, the Registrierkassensicherheitsverordnung (RKSV) mandates that all point-of-sale (POS) systems securely record transaction data and generate digital signatures to ensure data integrity and prevent tax evasion.
Key Requirements of RKSV:
- Individual Recording Obligation: Each cash transaction must be recorded individually.
- Receipt Issuance Obligation: A receipt must be issued and provided to the customer for every cash transaction.
- Cash Register Obligation: Businesses with annual revenues exceeding €15,000 and cash transactions over €7,500 are required to use electronic cash registers equipped with a technical security device (physical or cloud-based).


Key Benefits for Developers
- Standardized API: Simplifies development and reduces complexity.
- Vendor Independence: Supports multiple fiscal devices, avoiding vendor lock-in.
- Regulatory Compliance: Ensures adherence to Austrian fiscal laws without altering core POS logic.
- Automatic Updates: Adapts seamlessly to new fiscal regulations, future-proofing your system.
Integration with the fiskaltrust Middleware API
POS developers can integrate fiskaltrust by implementing a single API that manages all interactions with the required security mechanisms. This approach eliminates the need to develop custom fiscalization logic for each certified device.
- Accommodates both local (on-premise) and cloud-based setups, offering flexibility in deployment.
- Works with multiple fiscal hardware vendors, reducing the need for hardware-specific implementations.
- Ensures uniformity between POS-generated transactions and fiscal reports, maintaining compliance with Austrian regulations.
Automated Data Processing and Compliance
Once integrated, the middleware:
- Captures data from the POS system, validates it and processes it according to RKSV requirements.
- Creates receipts that include all legally required information, such as VAT details, payment methods and fiscal signatures.
Future-Proof Compliance and Updates
fiskaltrust continuously monitors changes in Austrian tax regulations and updates the middleware accordingly, ensuring ongoing compliance without POS software modifications.
- As fiscal laws evolve, fiskaltrust adds support for new compliance rules as soon as they are enacted.
- Updates are deployed centrally via the middleware, meaning developers don’t need to manually adjust their applications.
- Middleware enhancements and compliance updates are delivered with minimal disruption to business operations, keeping systems running smoothly.
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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