This issue has been resolved. You can submit the Income Tax 2025 again without receiving the error again. Our apologies for the inconvenience.
Posted Mar 03, 2026 - 09:00 CET
Identified
The issue has been identified and a fix is being implemented.
Posted Mar 02, 2026 - 14:11 CET
Investigating
You may receive an error message when submitting 2025 Income Tax returns. The error message you may receive is: " Reden: VAS500: Het aangeleverde instance document voldoet niet aan de Nederlandse taxonomie. Hierdoor kan het aanleververzoek niet door Digipoort worden verwerkt. ..." We are investigating this issue and we will update this page as soon as more information becomes available. Our apologies for the inconvenience.