The e-invoicing process in Hungary:
- Invoice creation: Invoices are generated in XML format and include detailed data required by the NAV system, such as the date of issue, VAT value, and supplier and recipient details.
- Submission: Invoices are transmitted in real time through the Online Számla platform. Taxpayers can either use accounting software integrated with the NAV system or manually enter data on the platform.
- Validation: The NAV system verifies the accuracy of the transmitted data immediately, ensuring compliance with tax regulations.
- Processing: Invoices are processed in the NAV system and the data is available in real time to the tax administration, which facilitates monitoring and tax compliance.
Archiving: Invoices must be retained for a minimum of eight years, as stipulated by Hungarian tax law. The NAV system ensures access to archived transaction data.