NAV Online Invoice System – stricter validations from September underscore NAV’s commitment to data quality

• Tightening of Online Invoice Reporting Rules: Starting September 15, 2025, Hungary’s Tax Authority (NAV) will reclassify 15 warning messages as error messages in the online invoice reporting system, leading to automatic rejections of submissions that trigger these errors, thus emphasizing the importance of data accuracy.
• Compliance and Penalties: Businesses face penalties of up to HUF 1 million per invoice for incorrect or incomplete submissions. The new regulations require companies to review their XML data submissions and ensure compliance, as previous warnings will now prevent invoice acceptance.
• Importance of Data Quality: The changes aim to enhance data quality and compliance, supporting the effectiveness of the eVAT system. Companies are encouraged to conduct regular internal audits and proactively address warning messages to mitigate risks and ensure accurate reporting.

Source RSM

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