{"id":3674,"date":"2026-04-07T11:00:00","date_gmt":"2026-04-07T09:00:00","guid":{"rendered":"https:\/\/valoxy.org\/blog\/?p=3674"},"modified":"2026-04-10T17:30:38","modified_gmt":"2026-04-10T15:30:38","slug":"quotient-familial","status":"publish","type":"post","link":"https:\/\/valoxy.org\/blog\/quotient-familial\/","title":{"rendered":"Le quotient familial"},"content":{"rendered":"<p class=\"p1\">Le quotient familial utilis\u00e9 par l\u2019administration fiscale permet de tenir compte du nombre de personnes composant le foyer, et des charges de famille, pour le calcul de l\u2019imp\u00f4t sur le revenu. Comment est-il d\u00e9termin\u00e9 ? Sur quelles bases ? Comment son plafond va-t-il influer sur l\u2019imp\u00f4t ?<\/p>\n<p class=\"p1\">Valoxy, cabinet d&rsquo;expertise comptable dans les Hauts-de-France explique le quotient familial dans cet article.<\/p>\n<h2 class=\"p3\"><b>Qu\u2019est-ce que le quotient familial ?<\/b><\/h2>\n<p class=\"p1\">D\u00e9termin\u00e9 en fonction de la situation personnelle et familiale d\u2019un contribuable, le quotient familial correspond au nombre de parts d\u2019un foyer fiscal qui sera utilis\u00e9 pour le <a href=\"https:\/\/valoxy.org\/blog\/impot-sur-le-revenu-calcul-08122014avalnicwill1\/\"><span class=\"s1\">calcul de l&rsquo;imp\u00f4t sur le revenu (IR)<\/span><\/a>.<\/p>\n<p class=\"p1\">Instaur\u00e9 en 1945 \u00e0 l\u2019initiative d\u2019Adolphe Landry, \u00e9conomiste et homme politique fran\u00e7ais, il permet d&rsquo;ajuster le montant de l&rsquo;imp\u00f4t aux <i>\u201ccapacit\u00e9s contributives\u201d <\/i>de chaque foyer. Il sert aussi \u00e0 d\u00e9finir le revenu fiscal de r\u00e9f\u00e9rence (RFR). Le quotient familial repose sur :<\/p>\n<ul class=\"ul1\">\n<li class=\"li1\">les revenus imposables de l\u2019ann\u00e9e N-1,<\/li>\n<li class=\"li1\">le \u201cnombre de parts\u201d affect\u00e9es au foyer, qui varie en fonction du nombre de personnes (et donc d\u2019enfants) composant le foyer.<\/li>\n<\/ul>\n<p class=\"p1\">Quotient familial = Revenu net imposable \/ nombre de parts fiscales.<\/p>\n<p class=\"p1\">Le r\u00e9sultat obtenu est ensuite soumis au bar\u00e8me progressif de l\u2019IR, puis multipli\u00e9 par le nombre de parts du foyer. On obtient alors le montant de l&rsquo;imp\u00f4t d\u00fb. Ce mode de calcul permet de b\u00e9n\u00e9ficier, pour chaque part de revenu, des taux applicables aux premi\u00e8res tranches du bar\u00e8me, et ainsi de ne pas atteindre trop vite les taux les plus \u00e9lev\u00e9s.<\/p>\n<p class=\"p1\">\u00c0 noter que la notion de \u201cquotient familial\u201d sert aussi \u00e0 la CAF, quoiqu\u2019avec des modalit\u00e9s de calcul diff\u00e9rentes, pour l\u2019attribution de certaines <a href=\"https:\/\/valoxy.org\/blog\/quest-ce-que-les-aides-sociales\/\"><span class=\"s2\">aides sociales<\/span><\/a>.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-3683 alignleft\" style=\"margin-right: 10px;\" title=\"Quotient familial\" src=\"https:\/\/valoxy.org\/blog\/wp-content\/uploads\/2013\/06\/regime-social-dirigeant.png\" alt=\"La baisse du plafond du quotient familial\" width=\"316\" height=\"247\" \/><\/p>\n<h2 class=\"p1\"><b>Quel est l\u2019objectif du quotient familial ?<\/b><\/h2>\n<p class=\"p2\">Le but du quotient familial est de moduler l\u2019imp\u00f4t en fonction des charges support\u00e9es par le foyer. (qui d\u00e9pendent du nombre de personnes composant le foyer). Le dispositif permet de r\u00e9tablir un certain \u201c\u00e9quilibre de niveau de vie\u201d entre les familles plus ou moins nombreuses. Et d\u2019ajuster le montant de l&rsquo;imp\u00f4t aux capacit\u00e9s contributives de chaque foyer : situation, charge de famille, etc.<\/p>\n<h2 class=\"p1\"><b>Comment se calcule le quotient familial ?<\/b><\/h2>\n<p class=\"p2\">Le \u201cquotient familial\u201d part du principe d\u2019une division du revenu imposable en un certain <b>nombre de parts fiscales<\/b> (<a href=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000033844057\"><span class=\"s1\">art. 193 du CGI<\/span><\/a>). Celles-ci sont des \u201cunit\u00e9s\u201d repr\u00e9sentatives des personnes qui composent un foyer. Ainsi un c\u00e9libataire, veuf, ou divorc\u00e9 sans enfant \u00e0 charge repr\u00e9sente <b>une<\/b> part de quotient familial. Un couple mari\u00e9 ou pacs\u00e9 sans enfant \u00e0 charge correspond \u00e0 deux parts. (<a href=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000018032928\"><span class=\"s2\">article 194 du CGI<\/span><\/a>). Les enfants \u00e0 charge font b\u00e9n\u00e9ficier de parts suppl\u00e9mentaires. (une demi-part pour le 1<span class=\"s3\"><sup>er<\/sup><\/span> et le\u00a0 2<span class=\"s3\"><sup>\u00e8me<\/sup><\/span> enfant, puis 1 part compl\u00e8te pour chacun des enfants suivants). De m\u00eame que certaines situations particuli\u00e8res, comme la garde altern\u00e9e, le handicap, le statut d\u2019invalide ou d\u2019ancien combattant (<a href=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000018032928\"><span class=\"s4\">article 195 du CGI<\/span><\/a>).<\/p>\n<h3 class=\"p4\"><b>Quels sont les cas de majoration du nombre de parts ?<\/b><\/h3>\n<ul class=\"ul1\">\n<li class=\"li5\"><b>Une part suppl\u00e9mentaire<\/b> :\n<ul class=\"ul1\">\n<li class=\"li5\">pour un veuf ou une veuve (ou partenaire de pacs d\u00e9c\u00e9d\u00e9), avec des enfants \u00e0 charge, et qui ne vit pas en couple. (soit 2,5 parts avec un enfant \u00e0 charge, ou 3 parts avec deux enfants \u00e0 charge),<\/li>\n<li class=\"li5\">par enfant \u00e0 partir du 3\u00e8me enfant.<\/li>\n<\/ul>\n<\/li>\n<li class=\"li5\"><b>Une demi-part en plus pour<\/b> :\n<ul class=\"ul1\">\n<li class=\"li5\">chacun des deux premiers enfants,<\/li>\n<li class=\"li5\">le parent isol\u00e9, qui vit seul avec des enfants \u00e0 charge. (soit 2 parts avec un enfant \u00e0 charge exclusive ou principale, 2,5 parts avec deux enfants \u00e0 charge, 3,5 avec trois enfants \u00e0 charge).<\/li>\n<li class=\"li5\">la personne seule, sans personne \u00e0 charge, qui a un ou plusieurs enfants majeurs impos\u00e9s distinctement, \u00e0 condition d\u2019avoir support\u00e9 leur charge (principale ou exclusive) pendant au moins cinq ans en tant que parent isol\u00e9.<\/li>\n<li class=\"li5\">le contribuable invalide, titulaire d\u2019une carte<span class=\"s5\"> <a href=\"https:\/\/valoxy.org\/blog\/quest-ce-que-linvalidite\/\"><span class=\"s6\">d\u2019invalidit\u00e9<\/span><\/a><\/span> pour une incapacit\u00e9 permanente d\u2019au moins 80 %, ou ayant \u00e0 sa charge une personne invalide titulaire d\u2019une telle carte,<\/li>\n<li class=\"li5\">les veufs ou veuves de plus de 74 ans, dont le conjoint \u00e9tait titulaire de la carte du Combattant ou d\u2019une pension militaire d\u2019invalidit\u00e9 au moment de son d\u00e9c\u00e8s (\u00e0 quelque \u00e2ge que ce soit)<\/li>\n<li class=\"li5\">les personnes qui per\u00e7oivent une pension pour accident du travail (AT) avec une invalidit\u00e9 d\u2019au moins 40 %.<\/li>\n<li class=\"li5\">un enfant titulaire de la carte mobilit\u00e9 inclusion (CMI) mention \u201cinvalidit\u00e9\u201d.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4 class=\"p1\"><b>Plafonnement du quotient familial<\/b><\/h4>\n<p class=\"p2\">L\u2019\u00e9conomie d\u2019imp\u00f4t g\u00e9n\u00e9r\u00e9e par les personnes \u00e0 charge est cependant limit\u00e9e par un plafond, d\u00e9termin\u00e9 chaque ann\u00e9e. \u00c0 chaque type de part ou de demi part suppl\u00e9mentaire correspond un plafond sp\u00e9cifique.<b> <\/b>Ainsi pour l\u2019imp\u00f4t sur le revenu de 2026 (bas\u00e9 sur les revenus per\u00e7us en 2025), les r\u00e9ductions d\u2019imp\u00f4t dues au quotient familial seront plafonn\u00e9es \u00e0\u00a0:<\/p>\n<ul class=\"ul1\">\n<li class=\"li2\">1.807 \u20ac (1.791 \u20ac en 2025) pour chacune des demi-parts li\u00e9es aux personnes \u00e0 charge dans le cas g\u00e9n\u00e9ral,<\/li>\n<li class=\"li7\">1.079 \u20ac (1.069 \u20ac en 2025) pour la demi-part suppl\u00e9mentaire accord\u00e9e aux personnes seules ayant eu au moins un enfant \u00e0 charge pendant au moins cinq ans lorsqu&rsquo;elles vivaient seules.<\/li>\n<li class=\"li2\"><span class=\"s7\">4.262 \u20ac (4.224 \u20ac en 2025)<\/span> pour la part accord\u00e9e au titre du premier enfant \u00e0 charge pour un contribuable vivant seul (c\u00e9libataire, divorc\u00e9 ou s\u00e9par\u00e9) \u00e9duquant un ou plusieurs enfants,<\/li>\n<li class=\"li2\">2.011\u00a0\u20ac pour la part suppl\u00e9mentaire accord\u00e9e aux veufs avec au moins une personne \u00e0 charge,<\/li>\n<li class=\"li2\">3.608 \u20ac pour la demi-part suppl\u00e9mentaire accord\u00e9e \u00e0 certains contribuables. (invalide, ancien combattant, \u2026)<\/li>\n<\/ul>\n<p class=\"p2\">Dans les faits, le plafonnement du quotient familial est calcul\u00e9 automatiquement par l&rsquo;administration fiscale sur la base des informations fournies sur la d\u00e9claration annuelle de revenus.<\/p>\n<h4 class=\"p1\"><b>Pour calculer l&rsquo;impact du quotient familial, il faut :<\/b><\/h4>\n<ol class=\"ol1\">\n<li class=\"li2\">Calculer son imposition th\u00e9orique, au taux progressif (sans le quotient familial), puis son imposition avec l\u2019impact des enfants,<\/li>\n<li class=\"li2\">Calculer l&rsquo;\u00e9conomie r\u00e9alis\u00e9e du fait des enfants (\u00e9cart entre les deux impositions pr\u00e9c\u00e9demment \u00e9valu\u00e9es),<\/li>\n<li class=\"li2\">Multiplier ensuite le plafond du quotient familial par le nombre d&rsquo;enfants du m\u00e9nage pour obtenir le plafond de la d\u00e9duction possible,<\/li>\n<li class=\"li2\">La diff\u00e9rence entre l&rsquo;\u00e9conomie r\u00e9alis\u00e9e et le plafond de la d\u00e9duction est \u00e0 rajouter \u00e0 l&rsquo;imposition avec les enfants au taux progressif.<\/li>\n<\/ol>\n<p class=\"p2\">Des questions sur votre d\u00e9claration d\u2019imp\u00f4ts ou votre fiscalit\u00e9 ? Besoin d\u2019un conseil ? Contactez votre expert-comptable !<\/p>\n<p class=\"p2\">Cet article vous a \u00e9t\u00e9 utile ? Dites le nous dans les commentaires ci-apr\u00e8s ! Retrouvez aussi nos autres articles sur le blog de Valoxy :<\/p>\n<ul class=\"ul2\">\n<li class=\"li9\"><span class=\"s6\"><a href=\"https:\/\/valoxy.org\/blog\/credit-impot-famille-comment-ca-marche\/\">Le cr\u00e9dit d\u2019imp\u00f4t famille<\/a><\/span><\/li>\n<li class=\"li9\"><span class=\"s6\"><a href=\"https:\/\/valoxy.org\/blog\/la-declaration-dimpots-2025\/\">La d\u00e9claration d\u2019imp\u00f4ts 2025<\/a><\/span><\/li>\n<li class=\"li9\"><a href=\"https:\/\/valoxy.org\/blog\/la-declaration-dimpots-2026\/\">La d\u00e9claration d\u2019imp\u00f4ts 2026<\/a><\/li>\n<li class=\"li9\"><span class=\"s6\"><a href=\"https:\/\/valoxy.org\/blog\/quelles-differences-entre-deduction-reduction-et-credit-dimpot\/\">D\u00e9duction, r\u00e9duction ou cr\u00e9dit d\u2019imp\u00f4t ?<\/a><\/span><\/li>\n<li class=\"li9\"><span class=\"s6\"><a href=\"https:\/\/valoxy.org\/blog\/impot-sur-le-revenu-calcul-08122014avalnicwill1\/\">Comment est calcul\u00e9 l\u2019imp\u00f4t sur le Revenu\u00a0?<\/a><\/span><\/li>\n<li class=\"li9\"><span class=\"s6\"><a href=\"https:\/\/valoxy.org\/blog\/solidarite-fiscale\/\">Imp\u00f4t sur le revenu : c\u2019est quoi la solidarit\u00e9 fiscale ?<\/a><\/span><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Le quotient familial utilis\u00e9 par l\u2019administration fiscale permet de tenir compte du nombre de personnes composant le foyer, et des charges de famille, pour le calcul de l\u2019imp\u00f4t sur le revenu. Comment est-il d\u00e9termin\u00e9 ? Sur quelles bases ? Comment&#8230;<\/p>\n","protected":false},"author":1,"featured_media":3681,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-3674","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fiscalite"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Le quotient familial | Blog Valoxy - Expertise comptable<\/title>\n<meta name=\"description\" content=\"Le quotient familial module l\u2019imp\u00f4t en fonction des charges support\u00e9es par le foyer fiscal. 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