> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.taxx.lu/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Is it possible to file a voluntary tax return after the official deadline?

No, a voluntary tax return cannot be filed after the official deadline. After this date, it is no longer possible to receive a tax refund.