{"id":2884,"date":"2024-05-22T08:30:00","date_gmt":"2024-05-22T06:30:00","guid":{"rendered":"https:\/\/www.aucoffre.com\/academie\/?p=2884"},"modified":"2024-05-15T11:24:58","modified_gmt":"2024-05-15T09:24:58","slug":"comment-calculer-inflation","status":"publish","type":"post","link":"https:\/\/www.aucoffre.com\/academie\/comment-calculer-inflation\/","title":{"rendered":"Le guide de l\u2019inflation : calcul, causes et solutions"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Mesur\u00e9e par l\u2019Insee en France, l\u2019inflation <a href=\"https:\/\/www.economie.gouv.fr\/cedef\/evolution-prix-consommation\">s\u2019est \u00e9tablie \u00e0 +4,9% en 2023<\/a> et \u00e0 +2,3% sur un an en mars 2024. Si l\u2019augmentation des prix \u00e0 la consommation, cons\u00e9quence directe de la crise sanitaire et des conflits mondiaux, semble ralentir, elle continue de fragiliser le pouvoir d\u2019achat des Fran\u00e7ais.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u2019ailleurs, ces derniers ont parfois l\u2019impression que les chiffres officiels ne refl\u00e8tent pas leur quotidien. Pour mieux comprendre le taux d\u2019inflation, nous vous proposons de d\u00e9tailler son mode de calcul et ses causes, puis d\u2019\u00e9voquer les moyens existants pour pr\u00e9server votre patrimoine.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u00c0 retenir :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>L\u2019inflation correspond \u00e0 la hausse g\u00e9n\u00e9ralis\u00e9e et durable des prix des biens et des services.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ses causes sont multiples, mais elle aboutit toujours \u00e0 une baisse du pouvoir d\u2019achat.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Elle se calcule gr\u00e2ce \u00e0 l\u2019Indice des prix \u00e0 la consommation (IPC) : une mesure de la variation des prix d\u2019un panier de biens et de services.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Qu\u2019est-ce que l\u2019inflation ?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019inflation se d\u00e9finit comme la hausse g\u00e9n\u00e9rale et durable des prix des biens et services, dans une \u00e9conomie donn\u00e9e. Concr\u00e8tement, lorsqu\u2019elle se g\u00e9n\u00e9ralise, une m\u00eame somme d\u2019argent ne permet plus d\u2019acheter autant de choses : il y a une perte de pouvoir d\u2019achat.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le taux d\u2019inflation correspond <strong>au pourcentage de hausse des prix des biens<\/strong> <strong>et des services sur une p\u00e9riode<\/strong>. Il est calcul\u00e9 par l\u2019Insee \u00e0 travers l\u2019Indice des prix \u00e0 la consommation (IPC). Ce taux est particuli\u00e8rement suivi par les acteurs \u00e9conomiques et politiques : l\u2019inflation a des cons\u00e9quences directes sur le pouvoir d\u2019achat des m\u00e9nages ainsi que sur le taux de croissance de l\u2019\u00e9conomie.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u2019autres termes gravitent autour du concept d&rsquo;inflation.&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>La d\u00e9flation fait r\u00e9f\u00e9rence \u00e0 une baisse globale des prix. La Chine a connu un \u00e9pisode de d\u00e9flation en 2023.\u00a0<\/li>\n\n\n\n<li>La stagflation, de son c\u00f4t\u00e9, repr\u00e9sente une forte inflation coupl\u00e9e \u00e0 une croissance \u00e9conomique tr\u00e8s faible, voire nulle. C\u2019est un ph\u00e9nom\u00e8ne rare survenu en France dans les ann\u00e9es 70.\u00a0<\/li>\n\n\n\n<li>L\u2019hyperinflation se caract\u00e9rise par une inflation extr\u00eamement forte et rapide, qui \u00e9rode la valeur de la monnaie. C\u2019\u00e9tait le cas de <a href=\"https:\/\/www.aucoffre.com\/academie\/hyperinflation-allemagne-explications\/\">l\u2019Allemagne apr\u00e8s la Premi\u00e8re Guerre mondiale<\/a>.\u00a0<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Comment calculer l\u2019inflation ?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">L\u2019indice des prix \u00e0 la consommation (IPC)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019IPC mesure la variation des prix d\u2019un grand nombre de biens et de services, et ce, sur une p\u00e9riode d\u2019un mois. Il permet ainsi de rep\u00e9rer une hausse g\u00e9n\u00e9ralis\u00e9e et durable de ces derniers, et donc, une situation d\u2019inflation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u2019est l\u2019Insee qui \u00e9tablit cet indice, en tant qu\u2019organisme de collecte, d\u2019analyse et de diffusion des informations cl\u00e9s sur l\u2019\u00e9conomie fran\u00e7aise. Les donn\u00e9es proviennent des relev\u00e9s effectu\u00e9s par les enqu\u00eateurs de l\u2019Insee, d\u2019Internet, des bases de donn\u00e9es administratives ou de caisse.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Les produits et services compris dans le calcul<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Pour calculer l\u2019IPC, l\u2019Insee observe la variation des prix de plusieurs dizaines de milliers de biens et de services. Si le d\u00e9tail des \u00e9l\u00e9ments concern\u00e9s n\u2019est pas rendu public, c\u2019est pour \u00e9viter toute tentative de falsification.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les produits et services pris en compte dans le calcul de l\u2019IPC sont de qualit\u00e9 constante et repr\u00e9sentatifs de la consommation des m\u00e9nages fran\u00e7ais. Ainsi, d\u00e8s lors qu\u2019un produit constitue plus de 1\/1000<sup>e<\/sup> de la consommation des m\u00e9nages, il entre dans le panier de l\u2019IPC.\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Il sera class\u00e9 dans une des cat\u00e9gories suivantes :&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>l\u2019alimentation ;\u00a0<\/li>\n\n\n\n<li>le logement ;<\/li>\n\n\n\n<li>les meubles ;<\/li>\n\n\n\n<li>l\u2019\u00e9nergie ;<\/li>\n\n\n\n<li>les d\u00e9penses d\u2019entretien et de m\u00e9nage ;<\/li>\n\n\n\n<li>les v\u00eatements et les chaussures ;<\/li>\n\n\n\n<li>les transports ;<\/li>\n\n\n\n<li>les d\u00e9penses de sant\u00e9 ;<\/li>\n\n\n\n<li>la communication ;<\/li>\n\n\n\n<li>les loisirs, la culture et l&rsquo;\u00e9ducation ;<\/li>\n\n\n\n<li>les boissons alcoolis\u00e9es et le tabac ;<\/li>\n\n\n\n<li>les biens et services divers ;<\/li>\n\n\n\n<li>les restaurants et les h\u00f4tels.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Chaque cat\u00e9gorie de biens et services <a href=\"https:\/\/france-inflation.com\/panier_insee.php\">est pond\u00e9r\u00e9e au sein de l\u2019indice<\/a>, de mani\u00e8re \u00e0 repr\u00e9senter le plus fid\u00e8lement possible la consommation des m\u00e9nages. Par exemple, le poids de l\u2019alimentation est pass\u00e9 de 17,9% en 2021 \u00e0 16,2% de l\u2019indice en 2023.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">La formule de calcul du taux entre deux p\u00e9riodes<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Pour calculer le taux d\u2019inflation sur une p\u00e9riode donn\u00e9e, il faut conna\u00eetre l\u2019IPC du d\u00e9but de la p\u00e9riode et l\u2019IPC de la fin de la p\u00e9riode.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La formule de calcul est alors la suivante :<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Taux d\u2019inflation = [(IPC de la fin de la p\u00e9riode &#8211; IPC du d\u00e9but de la p\u00e9riode) \/ IPC du d\u00e9but de la p\u00e9riode] x 100<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Quelles sont les causes de l\u2019inflation ?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Le plus souvent, une inflation plus forte que de coutume s\u2019explique par la corr\u00e9lation de tous les facteurs d\u2019influence. Cependant, on peut identifier certaines causes r\u00e9currentes qui favorisent la hausse des prix.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Le d\u00e9s\u00e9quilibre de l\u2019offre et la demande<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Lorsque la demande pour les produits et services augmente au sein d\u2019une \u00e9conomie tandis que l\u2019offre stagne, voire diminue, la hausse des prix (et donc l\u2019inflation) est in\u00e9vitable.\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ce ph\u00e9nom\u00e8ne appara\u00eet g\u00e9n\u00e9ralement \u00e0 la sortie d\u2019une p\u00e9riode de r\u00e9cession, alors que l\u2019\u00e9conomie est de nouveau stimul\u00e9e, mais que les entreprises, encore frileuses ou trop impact\u00e9es par la crise, n\u2019augmentent pas leur production.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">L\u2019augmentation des co\u00fbts de production<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">La hausse g\u00e9n\u00e9ralis\u00e9e des prix peut \u00e9galement \u00eatre due \u00e0 l\u2019action directe des entreprises.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En effet, si le co\u00fbt des mati\u00e8res premi\u00e8res augmente, les co\u00fbts de production des biens de consommation grimpent, eux aussi, in\u00e9vitablement, amenant les entreprises \u00e0 ajuster leurs prix \u00e0 la hausse.\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">De m\u00eame, un taux de ch\u00f4mage faible entra\u00eene m\u00e9caniquement une hausse des salaires pour attirer de nouveaux employ\u00e9s. Celle-ci se r\u00e9percute sur les co\u00fbts de production et aboutit in fine \u00e0 une augmentation des prix.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">La d\u00e9pr\u00e9ciation de la monnaie<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">La diminution du taux de change entre la monnaie nationale et les principales monnaies utilis\u00e9es dans le cadre du commerce international (au premier rang desquelles figure le dollar am\u00e9ricain) peut mener \u00e0 une situation d\u2019inflation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Si l\u2019euro se d\u00e9pr\u00e9cie, par exemple, face au dollar, les produits d\u2019importation voient leurs prix augmenter, et les consommateurs leur pouvoir d\u2019achat diminuer.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Comment se pr\u00e9munir face \u00e0 l\u2019inflation ?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Les effets de l\u2019inflation sur l\u2019\u00e9conomie<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Une l\u00e9g\u00e8re augmentation des prix sur le long terme (c\u2019est-\u00e0-dire une inflation mod\u00e9r\u00e9e) est consid\u00e9r\u00e9e comme b\u00e9n\u00e9fique pour l\u2019\u00e9conomie.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Elle pr\u00e9sente en effet quelques avantages :&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>elle incite les \u00e9pargnants \u00e0 investir leurs \u00e9conomies plut\u00f4t qu\u2019\u00e0 th\u00e9sauriser ;<\/li>\n\n\n\n<li>elle rassure les entreprises sur les futurs niveaux de prix ;<\/li>\n\n\n\n<li>elle permet de maintenir des taux d\u2019int\u00e9r\u00eat attractifs et favorise donc les emprunts.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">En revanche, une trop forte inflation s\u2019av\u00e8re g\u00e9n\u00e9ralement d\u00e9favorable pour la comp\u00e9titivit\u00e9 et le niveau d\u2019activit\u00e9 des entreprises. Elle instaure alors un climat d\u2019incertitudes et une frilosit\u00e9 des investisseurs, dans le contexte d\u2019une baisse du pouvoir d\u2019achat des m\u00e9nages.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"jeg_video_container jeg_video_content\"><iframe title=\"EURO NUM\u00c9RIQUE, INFLATION, TAUX D\u2019INT\u00c9R\u00caT : \u00c0 QUOI JOUENT LES BANQUES CENTRALES ? Avec Tom Benoit\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/5d2PcBbtou4?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Les politiques des banques centrales<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019une des principales <a href=\"https:\/\/www.aucoffre.com\/academie\/a-quoi-servent-les-banques-centrales\/\">missions des banques centrales<\/a>, notamment de la Banque centrale europ\u00e9enne (BCE), est de maintenir un niveau d\u2019inflation mod\u00e9r\u00e9 sur le long terme : autour de +2%.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pour ce faire, ces derni\u00e8res ajustent leurs politiques mon\u00e9taires en faisant varier les taux directeurs et les quantit\u00e9s de liquidit\u00e9s qu\u2019elles injectent dans l\u2019\u00e9conomie.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">L\u2019investissement dans des valeurs refuges<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Pour se pr\u00e9munir contre la hausse des prix des biens et des services, il est possible d\u2019acheter des valeurs dites \u00ab refuges \u00bb. Elles sont appel\u00e9es ainsi, car leur prix n\u2019est pas corr\u00e9l\u00e9 \u00e0 ceux des biens et des services de consommation classique. Leur valeur reste constante dans le temps, voire s\u2019appr\u00e9cie au fil des ann\u00e9es, et particuli\u00e8rement en p\u00e9riode de crise.&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u2019est notamment le cas des m\u00e9taux pr\u00e9cieux, tels que l\u2019or et l\u2019argent, que <a href=\"https:\/\/www.aucoffre.com\/academie\/pourquoi-les-banques-centrales-achetent-elles-de-lor\/\">les banques centrales elles-m\u00eames ach\u00e8tent en quantit\u00e9<\/a> ! Disposer d\u2019une r\u00e9serve d\u2019or permet en effet de diversifier son patrimoine et de prot\u00e9ger un capital malgr\u00e9 les al\u00e9as de l\u2019\u00e9conomie.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00e9couvrez <a href=\"https:\/\/www.aucoffre.com\/comment-acheter-or\">comment acheter de l\u2019or<\/a> !<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mesur\u00e9e par l\u2019Insee en France, l\u2019inflation s\u2019est \u00e9tablie \u00e0 +4,9% en 2023 et \u00e0 +2,3% sur un an en mars 2024. Si l\u2019augmentation des prix \u00e0 la consommation, cons\u00e9quence directe de la crise sanitaire et des conflits mondiaux, semble ralentir, elle continue de fragiliser le pouvoir d\u2019achat des Fran\u00e7ais.&nbsp; D\u2019ailleurs, ces derniers ont parfois l\u2019impression [&hellip;]<\/p>\n","protected":false},"author":15,"featured_media":2885,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"content-type":"","jnews-multi-image_gallery":[],"jnews_single_post":{"subtitle":"","format":"standard","video":"","gallery":"","source_name":"","source_url":"","via_name":"","via_url":"","override_template":"0","override":[{"template":"8","single_blog_custom":"","parallax":"1","fullscreen":"0","layout":"no-sidebar-narrow","sidebar":"default-sidebar","second_sidebar":"default-sidebar","sticky_sidebar":"1","share_position":"bottom","share_float_style":"share-monocrhome","show_share_counter":"1","show_view_counter":"1","show_featured":"1","show_post_meta":"1","show_post_author":"0","show_post_author_image":"1","show_post_date":"1","post_date_format":"default","post_date_format_custom":"Y\/m\/d","show_post_category":"1","show_post_reading_time":"1","post_reading_time_wpm":"300","show_zoom_button":"0","zoom_button_out_step":"2","zoom_button_in_step":"3","show_post_tag":"1","show_prev_next_post":"1","show_popup_post":"1","number_popup_post":"2","show_author_box":"1","show_post_related":"1","show_inline_post_related":"0"}],"override_image_size":"0","image_override":[{"single_post_thumbnail_size":"crop-500","single_post_gallery_size":"crop-500"}],"trending_post":"0","trending_post_position":"meta","trending_post_label":"Trending","sponsored_post":"0","sponsored_post_label":"Sponsored by","sponsored_post_name":"","sponsored_post_url":"","sponsored_post_logo_enable":"0","sponsored_post_logo":"","sponsored_post_desc":"","disable_ad":"0"},"jnews_primary_category":{"id":"","hide":""},"jnews_social_meta":{"fb_title":"","fb_description":"","fb_image":"","twitter_title":"","twitter_description":"","twitter_image":""},"jnews_override_counter":{"override_view_counter":"0","view_counter_number":"0","override_share_counter":"0","share_counter_number":"0","override_like_counter":"0","like_counter_number":"0","override_dislike_counter":"0","dislike_counter_number":"0"},"footnotes":""},"categories":[81],"tags":[87,97,91],"niveau":[130],"class_list":["post-2884","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-economie","tag-economie","tag-histoire","tag-investissement","niveau-debutant"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Comment calculer l\u2019inflation ? L\u2019indice de r\u00e9f\u00e9rence expliqu\u00e9<\/title>\n<meta name=\"description\" content=\"Ph\u00e9nom\u00e8ne \u00e9conomique, l\u2019inflation entra\u00eene une hausse globale des prix. D\u00e9couvrez ses causes, son mode de calcul et comment y rem\u00e9dier.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.aucoffre.com\/academie\/comment-calculer-inflation\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Comment calculer l\u2019inflation ? L\u2019indice de r\u00e9f\u00e9rence expliqu\u00e9\" \/>\n<meta property=\"og:description\" content=\"Ph\u00e9nom\u00e8ne \u00e9conomique, l\u2019inflation entra\u00eene une hausse globale des prix. 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