Invoicing App for Hungary

To ensure compliance and efficiency, a Hungarian invoicing app must offer specific features tailored to the local tax landscape. The core requirement is NAV certification, meaning the software is approved by the National Tax and Customs Administration (NAV) for generating and reporting invoices. This certification ensures your app meets technical and legal standards.

• Real-time Invoice Reporting (RTIR): The app must automatically transmit invoice data in XML format to the NAV Online Számla system immediately upon issuance for all B2B, B2C, and B2G transactions, regardless of the amount.
• VAT Compliance Management: Look for automated VAT calculation, correct application of VAT rates, and the ability to handle reverse charge or VAT-exempt transactions.
• Integration with Hungarian Tax Systems: Seamless API integration with the NAV Online Számla platform is critical for automated, real-time data submission, reducing manual effort and errors.
• Structured E-invoice Support: While not universally mandatory yet, the app should support generating invoices in structured XML formats (e.g., UBL 2.1, UN/CEFACT CII, PEPPOL BIS 3.0 schemas) to align with future mandates and the EN 16931 European standard.

Selecting an invoicing app without understanding Hungary's unique tax requirements can lead to significant issues and penalties. A major pitfall is choosing an app that lacks real-time reporting capabilities. Since January 1, 2021, all VAT-registered businesses must report invoice data to NAV in real-time, and failure to do so can result in fines of up to HUF 1 million per invoice.

• Non-compliance with NAV: Using software that isn't properly accredited or doesn't adhere to the latest NAV technical specifications (like the XML schema) will lead to rejected submissions and non-compliance.
• Poor Integration with Tax Systems: Apps with unreliable or manual integration processes for the NAV Online Számla system increase the risk of delayed reporting, data entry errors, and administrative burden. Automated, secure web service integration is essential.
• Ignoring E-receipt Requirements: For businesses issuing receipts, overlooking the upcoming e-receipt (ePénztárgép) regulations, which mandate daily data reporting from September 1, 2026, can cause future compliance headaches.

To ensure your chosen invoicing app fully complies with Hungarian tax regulations, focus on its ability to handle both current real-time reporting and evolving e-invoicing standards. All VAT-registered businesses must report B2B, B2C, and B2G invoice data in real-time to the NAV Online Számla system in XML format.

• Verify Real-time Reporting: Confirm the app's ability to transmit complete invoice data (seller/buyer details, VAT numbers, line items, VAT amounts in HUF) immediately after issuance via a secure web service to NAV.
• Support for Structured E-invoice Formats: While not yet mandatory for all B2B, Hungary is moving towards mandatory B2B and B2G e-invoicing compliant with the EN 16931 standard, potentially via PEPPOL. Ensure the app can generate and process invoices in structured XML formats (e.g., UBL 2.1, UN/CEFACT CII).
• Tracking and Managing E-receipts: If your business issues receipts, prepare for the mandatory daily reporting of receipt data to NAV, effective September 1, 2026, for businesses not using e-cash registers. The app should support generating e-receipts from approved e-cash registers.
• Data Retention: Invoices must be retained for at least 8 to 10 years. The app should facilitate secure digital archiving.