Freemium Bundle A free and open entry point to compliant POS

fiskaltrust.FreemiumBundle

The Freemium Bundle is a free, production-ready middleware solution for POS systems. It provides the technical foundation for fiscalisation compliance, receipt handling and digital payment flows. This bundle helps merchants, POS creators and integration partners meet legal obligations without the need for costly upfront commitments or vendor lock-in.

A complete fiscalisation solution, bundled and simple.

The Freemium Bundle offers an open-source API for multiple countries, with a consistent interface for signing, journaling, and receipts.

It supports embedded, local, or cloud deployment, and includes digital receipts, archiving, and offline fallback via local IoT brokers. Usage is free for up to 10,000 receipts per month under fair use.

Start Free on the fiskaltrust.Portal

Fair Use Conditions

Up to 10,000 receipts per month per merchant outlet
Non-commercial redistribution or resale is not permitted
Reasonable API usage without excessive or abusive call patterns
No guaranteed SLAs or personalised support under the free tier
Limited to standard configurations without customisation

Who is it for

The Freemium Bundle gives developers and partners a quick, no-cost starting point to integrate fiscalisation compliance into POS systems. Ideal for pilots, prototypes, or low-volume merchants.

Management

Portal
CloudAPI
Self Hosting

Compliance

Open Source
Receipt chaining & signing
Local Journal
Local Data Export

Receipt

Open Source
Cloud based, interactive
visualization of receipt
InStoreApp

Receipt

Open Source
Cloud based Terminal Gateway

Download Developer Docs

Docs Platform GitHub

Key Features and Benefits

The fiskaltrust Freemium Bundle supports both developers and commercial partners with a reliable, production-ready entry point to fiscal compliance. Developers benefit from a unified, open-source API that simplifies integration across markets and architectures. Commercial partners get a stable, audit-proof solution they can offer at no cost, with a clear upgrade path to premium services. This shared foundation helps reduce complexity, shorten rollouts, and scale with confidence across multiple countries.

Key Features

Open-Source Middleware
MIT-licensed, fully auditable, and available on GitHub with no vendor lock-in
Unified Fiscal API
One consistent interface for signing, journaling, and exporting receipts across multiple countries
Flexible Deployment
Supports embedded, local service, container, or cloud hosted setups
Modular Transaction Lifecycle
Handles order, pay, sign, and issue operations with support for external PSPs and printer adapters
Offline Fallback Built-In
Includes a local MQTT broker for POS-to-middleware communication during internet outages
Standardised Audit Exports
Granular journal access and export formats ready for local tax authorities
Cross-Platform Compatibility
Runs on Windows, Linux, macOS, Android, and iOS for maximum flexibility
Lifecycle Event Logging
All fiscal events are revision-safe and fully logged for audit trails
Developer Tooling and Docs
Public documentation, SDKs, and sandbox access available via the fiskaltrust.Portal and GitHub

Benefits

Production-Ready and Free
Use in real systems with up to 10,000 receipts per month under fair use conditions
No Upfront Cost
Ideal for pilot rollouts, early-stage projects, or entry-level merchant setups
Audit-Proof Architecture
Includes secure signing, data chaining, and journaling for full traceability
Trusted by the Ecosystem
Used by over 1,200 partners and 100,000+ merchant locations
Supports Multi-Country Rollouts
Same integration covers Austria, Germany, France, Italy, and more
Future-Proof Integration
Freemium uses the same APIs as Premium and Bundle tiers, simplifying upgrades
Reduced Time to Market
Eliminates need to interpret and implement country specific fiscal logic
Transparent and ISO-Aligned
Enables easier compliance explanation and client support

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Products & Bundles

Build fast - Compliant & Modular

fiskaltrust.FreemiumBundle

The Freemium Bundle is a free, open-source middleware that handles receipt processing, signing, and journaling across multiple countries. It offers a unified API, flexible deployment, and offline fallback.

With support for 10,000 receipts per month under fair use, it gives developers and partners a stable, compliant starting point without cost or lock-in.

What's included

FREE

fiskaltrust.Middleware (Open Source)
Signing and reporting are handled digitally or via certified cloud services.
Unified POS API
Supports /order, /pay, /sign, /issue, and /journal across supported countries
Cross-Country Compliance Logic
Backend handles local fiscal rules for Austria, Germany, France, Italy, and more
Multi-Platform Compatibility
Runs on Windows, Linux, macOS, Android, iOS
Flexible Deployment
Supports embedded mode, local services, container setups, or fiskaltrust-hosted instances

Offline Fallback via MQTT Broker
Ensures POS-to-middleware communication continues during internet outages
Digital Receipt Support
Enables issuing digital receipts (QR code, email, SMS) via the same interface
Audit and Journal Export Interface
Standardised access to audit logs and authority-ready export formats
Fair Use Volume
Includes up to 10,000 signed receipts per month per outlet
Access to fiskaltrust.Portal
Self-service configuration, Queue management, and system monitoring
Developer Resources
Public GitHub repo, sandbox environments, SDKs, and API documentation

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Free, open-source compliance that works across countries and is ready for production.

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