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Guide des droits et des démarches administratives
Impôt sur le revenu - Comment sont imposés les revenus exceptionnels ?
Question-réponse
Vous avez touché des revenus exceptionnels en 2025 et vous voulez éviter une augmentation brutale de votre imposition. Pour limiter la hausse d'impôt, vous pouvez demander à bénéficier du système du quotient.
Des revenus sont considérés comme exceptionnels s'ils dépassent vos revenus habituels et qu'ils ne se renouvellent pas chaque année.
Par exemple, les revenus suivants :
Pour être considéré comme exceptionnel, un revenu doit dépasser la moyenne des revenus imposables des 3 années précédentes.
La comparaison s'applique aux revenus du foyer fiscal.
Toutefois, certains revenus sont considérés comme exceptionnels quel que soit leur montant.
C'est notamment le cas pour les revenus suivants :
Si vous avez perçu en 2025 une indemnité de rupture de contrat de travail (par exemple, en cas de licenciement), ce revenu (pour sa partie imposable) est considéré comme exceptionnel quel que soit son montant.
Si vous avez perçu en 2025 une prime de mobilité, ce revenu est considéré comme exceptionnel quel que soit son montant.
Si vous avez perçu en 2025 une prime de départ volontaire (par exemple, en cas de rupture conventionnelle), ce revenu est considéré comme exceptionnel quel que soit son montant.
Si vous avez perçu en 2025 une indemnité de départ volontaire en retraite ou de mise à la retraite, ce revenu est considéré comme exceptionnel quel que soit son montant.
Si vous avez perçu un revenu exceptionnel en 2025, vous pouvez demander qu'il soit imposé selon le système du quotient.
Le système du quotient permet d'éviter la progressivité du barème de l'impôt.
Il s'applique en 2 étapes :
Ajouter le quart du revenu exceptionnel à votre revenu ordinaire
Multiplier par 4 le supplément d'impôt correspondant.
L'impôt relatif au revenu exceptionnel est payé en une seule fois.
Les revenus à imposer selon le système du quotient ne doivent pas être inclus dans les autres revenus déclarés.
Vous devez inscrire le total de ces revenus selon l'un des moyens suivants :
Vous devez détailler le montant et la nature des revenus exceptionnels à imposer au quotient, perçus par chaque membre du foyer.
La déclaration des revenus par internet est obligatoire si votre résidence principale est équipée d'un accès à internet et que vous êtes en mesure de faire votre déclaration en ligne.
La déclaration en ligne des revenus de 2025 débute le 9 avril 2026.
La date limite varie selon que vous effectuez votre déclaration en ligne ou sur formulaire papier.
Vous pouvez utiliser le simulateur suivant pour connaître la date qui vous concerne :
Date limite pour faire votre déclaration de revenus en ligne
Département |
Date limite de déclaration |
01 au 19 |
Jeudi 21 mai 2026 à 23h59 |
20 au 54 (y compris le 2A et le 2B) |
Jeudi 28 mai 2026 à 23h59 |
55 au 974/976 |
Jeudi 4 juin 2026 à 23h59 |
Non-résidents |
Jeudi 21 mai 2026 à 23h59 |
Si vous devez faire une déclaration papier
La déclaration de revenus doit être déposée avant le mardi 19 mai 2026 à 23h59, y compris pour les résidents français à l'étranger.
Services en ligne et formulaires
Modifié le 15/04/2026
- Service Public / Direction de l'information légale et administrative (Premier ministre)
