Hungary Link to the Online Invoice Sytem & Info for System Providers 23 September 2020105 views1 min read Source Online Invoice System Link to info for system providers: Link E-invoicing Reporting / Compliance ECJ C-610/19 (Vikingo Fővállalkozó Kft.) – Order – Right to deduct VAT even if invoices cannot be considered credible Version 3.0 XML file gives invoice issuers a range of e-invoicing opportunities as of April 1, 2021