Proposition de loi modifiant le Code des impôts sur les revenus 1992 en ce qui concerne le dégrèvement d'office d'erreurs tacitement acceptées entachant une proposition de déclaration simplifiée.

This is a Belgian private member's bill proposing an amendment to the Income Tax Code 1992. It concerns the ex officio (automatic) correction by the tax authorities of errors that taxpayers have implicitly accepted in a pre-filled simplified tax return proposal. Based on the title alone, the bill aims to clarify when the tax administration can reduce a tax liability without a formal request from the taxpayer. The main groups affected are taxpayers who file simplified declarations, which are pre-completed by the tax administration, and the Belgian tax administration itself. The exact scope, thresholds and procedures would be found in the full text, which is not available here.