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

Thefiskaltrust 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

Get Started with Middleware Setup

Get Started

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

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