Viva Fiscalisation for ISVs
What is it?
Viva Fiscalisation is the digital bridge between your software and government tax requirements, removing the need for physical fiscal hardware.
This guide is specifically designed for ISVs and Software Partners building solutions for multiple merchants across regulated European markets.
Step 1: Choose your integration path
Select the method that matches your software architecture to see the specific ISV requirements.
| Cloud REST API | Local REST API | Inter-App (Mobile) |
|---|---|---|
| Best for Web-based POS & SaaS | Best for Windows/Desktop POS | Best for iOS or Android Apps |
| π Cloud Guide | π P2P Guide | π iOS Guide / π Android Guide |
βΉοΈ Not an ISV?
Viva Fiscalisation is also available for individual merchants and simpler setups. If you’re not building for multiple clients, see the general fiscalisation guides instead.
How it works
Compliance is an automated 3-step flow between your software, the Viva Terminal, and the Tax Authority.
- Send sales data β Your system triggers the transaction via your chosen API.
- Viva validates & signs β We handle real-time government reporting (e.g., AADE/myDATA).
- Receive compliant result β You receive the legal signature or QR code to store/print.
ISV Partner Checklist
Before you begin testing your integration:
- Demo Account: Create a Demo Merchant Account to act as your test store.
- Enable Fiscal: Send Viva your Merchant ID and Tax ID (AFM). We must enable fiscal flags on the backend for your testing account.
- Download the App: Download Viva Terminal (Demo β Fiscalisation enabled)
- Initial Sync: Run one Start Receipt request per merchant to initialize the tax connection.
Useful Links
- π Core API: ftPayItemCase Fields
- π Greece: Business Use Cases & Samples
- π ISV Integration Support
- π Visual Receipt Mapping