The fact
The online service allows adjustments for errors or omissions until the end of December.
It applies to 2025 income declared this year.
Click the link to read an article on the topic:
Why it matters
Ce dispositif offre une souplesse aux contribuables, mais son utilisation massive pourrait retarder le traitement des dossiers. Il reflète l’adaptation de l’administration fiscale aux outils numériques.