impôt sur le revenu – Impossibilité de bénéficier de plus d'une demi-part supplémentaire

This written question concerns the French income tax system, specifically the rules for claiming additional tax allowances. It asks about the conditions under which a taxpayer can benefit from more than one half-allowance. This affects individuals filing their income tax returns in France. The clarification sought could impact the final tax liability for those eligible for multiple allowances.