Calculer son déficit foncier en 2026 : méthode étape par étape
Le déficit foncier permet de réduire votre imposition sur le revenu lorsque vos charges liées à un bien locatif dépassent les loyers perçus. En 2026, ce dispositif reste un outil fiscal avantageux pour les investisseurs immobiliers, à condition de respecter les règles en vigueur. vous accompagne dans le calcul précis de votre déficit foncier et son intégration dans votre déclaration 2044.
Quelles charges déductibles pour le calcul du déficit foncier ?
Le calcul du déficit foncier repose sur la comparaison entre les revenus fonciers bruts (loyers perçus) et l’ensemble des charges déductibles. Sont incluses : les intérêts d’emprunt, les travaux de réparation et d’entretien, la taxe foncière, l’assurance emprunteur liée au bien, les frais de gestion locative, les primes d’assurance du bien, que les charges de copropriété non récupérées aux locataires.
Attention : les travaux d’amélioration, d’agrandissement ou de construction ne sont pas déductibles du revenu foncier. En revanche, ils peuvent être inclus dans le prix d’acquisition du bien et amortis dans le cadre d’un loueur en meublé non professionnel (LMNP), mais pas en régime réel classique.
- Intérêts d’emprunt : déductibles intégralement, même si l’emprunt finance plusieurs biens.
- Travaux de réparation : exemple : remplacement de toiture, rénovation de plomberie ou d’électricité.
- Frais de gestion : jusqu’à 15 % des loyers bruts si aucune justification n’est fournie, ou justificatifs à l’appui pour un montant réel.
- Taxe foncière et ordures ménagères : entièrement déductibles.
Imputation du déficit foncier sur d'autres revenus
En 2026, le déficit foncier peut être imputé sur d’autres revenus imposables, notamment les revenus salariaux, dans la limite de 10 700 € par an. Ce plafond concerne l’ensemble des déficits fonciers déduits annuellement. Tout dépassement est reportable sur les cinq années suivantes, sans limitation de durée pour les immeubles anciens rénovés sous conditions du dispositif Denormandie.
Pour bénéficier de cette déduction, vous devez déclarer vos revenus fonciers en régime réel (formulaire 2044), même si vous êtes en dessous du seuil de 15 000 € de loyers annuels. Le régime micro-foncier (abattement de 30 %) n’autorise pas la déduction de déficit.
Sources
Étapes à suivre
- 1
Recenser les loyers perçus
Listez l’ensemble des revenus locatifs bruts perçus durant l’année civile 2026, avant toute déduction. Incluez les provisions pour charges non récupérées et les compléments éventuels. Ces montants s’inscrivent en case 4BE du formulaire 2044.
- 2
Identifier les charges déductibles
Compilez toutes les dépenses éligibles : intérêts d’emprunt, taxe foncière, travaux de réparation, frais de gestion, assurance locative. Conservez les justificatifs. Les travaux d’agrandissement ou de construction ne sont pas déductibles en régime réel.
- 3
Calculer le déficit
Soustrayez le total des charges déductibles du montant des loyers perçus. Si le résultat est négatif, vous êtes en déficit foncier. Ce montant peut être imputé sur d’autres revenus dans la limite de 10 700 € en 2026.
- 4
Déclarer en régime réel (2044)
Remplissez le formulaire 2044 pour déclarer vos revenus fonciers. Le déficit est automatiquement calculé par l’administration. Assurez-vous de ne pas être en micro-foncier, car ce régime exclut toute possibilité de déficit.
- 5
Imputer ou reporter le déficit
Le déficit annuel est d’abord imputé sur vos autres revenus imposables. Le surplus est reportable sur les 5 années suivantes. Pour les biens Denormandie, le report peut s’étendre au-delà sous conditions de réhabilitation.
Conseils pratiques
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Points d'attention
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Questions fréquentes
Quand doit-on faire sa déclaration de revenus en 2026 ?
La campagne de déclaration de revenus 2026 (sur les revenus 2025) débute généralement en avril. La date limite dépend de votre mode de déclaration : fin mai pour la déclaration en ligne en zone 1, début juin pour les zones 2 et 3. Les dates exactes sont communiquées sur impots.gouv.fr au printemps.
Comment bénéficier d'un crédit d'impôt ?
Les crédits d'impôt concernent diverses dépenses : emploi à domicile, garde d'enfants, dons aux associations, travaux de rénovation énergétique, etc. Pour en bénéficier, vous devez déclarer ces dépenses dans votre déclaration de revenus. Le crédit d'impôt est déduit de l'impôt dû, et si l'impôt est inférieur au crédit, l'excédent vous est remboursé.
Où trouver de l'aide pour remplir sa déclaration d'impôts ?
Vous pouvez obtenir de l'aide sur impots.gouv.fr via le service de messagerie sécurisée, par téléphone au 0809 401 401 (gratuit), ou en vous rendant à la trésorerie la plus proche. Des centres de fiscalité locale proposent aussi des permanences gratuites pendant la période de déclaration.
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Rédacteurs spécialisés en droit, fiscalité et finances
Rédigé et vérifié par notre équipe de rédacteurs spécialisés. Sources officielles consultées : service-public.fr, legifrance.gouv.fr, impots.gouv.fr, ameli.fr. Dernière vérification : 10 mai 2026.
Sources officielles consultées
Les informations contenues dans ce guide sont fournies à titre indicatif et ne remplacent pas un conseil professionnel personnalisé.