{"id":53281,"date":"2026-09-11T13:47:35","date_gmt":"2026-09-11T13:47:35","guid":{"rendered":"https:\/\/volity.io\/blog\/crypto-bitcoin-tax-defi-risk-2\/"},"modified":"2026-09-11T17:39:50","modified_gmt":"2026-09-11T17:39:50","slug":"crypto-bitcoin-tax-defi-risk","status":"publish","type":"post","link":"https:\/\/volity.io\/fr\/actualites\/crypto-bitcoin-tax-defi-risk\/","title":{"rendered":"March\u00e9 crypto : le Bitcoin, la fiscalit\u00e9 et les risques DeFi"},"content":{"rendered":"<h2>Les nouvelles lignes de fracture de la crypto<\/h2>\n\n<p>Le Bitcoin \u00e9volue pr\u00e8s de ses records, mais le march\u00e9 para\u00eet de plus en plus fragile. Dans le m\u00eame temps, gouvernements et groupes fintech redessinent les infrastructures sur lesquelles il repose.<\/p>\n\n<p>Pour les traders, la question n&rsquo;est plus seulement celle du prix. Elle porte aussi sur la fiscalit\u00e9, le contr\u00f4le r\u00e9glementaire, l&rsquo;infrastructure de r\u00e8glement et la d\u00e9tention des cl\u00e9s.<\/p>\n\n<h2>Bitcoin : haut perch\u00e9, cher et expos\u00e9<\/h2>\n\n<p>Le Bitcoin s&rsquo;\u00e9change dans le haut de la zone des $70 000, mais le graphique hebdomadaire a perdu son assurance. Les analystes techniques surveillent de pr\u00e8s la <b>moyenne mobile exponentielle \u00e0 50 semaines<\/b>.<\/p>\n\n<p>Si le BTC passe nettement sous ce niveau, les vendeurs pourraient viser <b>$72 000 \u00e0 $74 000<\/b>. En revanche, un support qui tient pr\u00e9serverait la tendance haussi\u00e8re de fond.<\/p>\n\n<ul>\n  <li><b>Au-dessus de l&rsquo;EMA 50 semaines :<\/b> les vendeurs d&rsquo;options peuvent encore s&rsquo;appuyer sur le support et encaisser la prime.<\/li>\n  <li><b>Sous l&rsquo;EMA 50 semaines :<\/b> les investisseurs pourraient commencer \u00e0 voir la faiblesse comme une correction, et non comme une nouvelle occasion d&rsquo;achat.<\/li>\n<\/ul>\n\n<p>Le contexte macro pourrait dicter le rythme. L&rsquo;IPC am\u00e9ricain est attendu autour de <b>3,4 %<\/b>, tandis que la rh\u00e9torique sur les droits de douane monte de nouveau \u00e0 Washington.<\/p>\n\n<p>Un chiffre plus \u00e9lev\u00e9 que pr\u00e9vu pourrait donc faire grimper les rendements des bons du Tr\u00e9sor et renforcer le dollar. Cette combinaison a rarement facilit\u00e9 la vie des positions crypto sp\u00e9culatives.<\/p>\n\n<h2>L&rsquo;Allemagne redessine la carte fiscale<\/h2>\n\n<p>Berlin a lanc\u00e9 un avertissement aux d\u00e9tenteurs de crypto de long terme en Europe. L&rsquo;Allemagne pr\u00e9voit de mettre fin \u00e0 l&rsquo;exon\u00e9ration d&rsquo;imp\u00f4t sur les plus-values crypto pour les avoirs conserv\u00e9s plus d&rsquo;un an.<\/p>\n\n<p>Selon un projet diffus\u00e9 le 9 septembre, les actifs achet\u00e9s \u00e0 partir du <b>1er janvier 2027<\/b> seraient soumis \u00e0 l&rsquo;imp\u00f4t sur les revenus du capital. Le taux propos\u00e9 est de <b>25 %<\/b>, auquel s&rsquo;ajoute une contribution de solidarit\u00e9 de <b>5,5 %<\/b>.<\/p>\n\n<p>Le taux effectif atteint ainsi <b>26,375 %<\/b>, hors imp\u00f4t eccl\u00e9siastique. Aujourd&rsquo;hui, les investisseurs particuliers peuvent vendre leurs cryptos en franchise d&rsquo;imp\u00f4t apr\u00e8s un an de d\u00e9tention.<\/p>\n\n<p>La proposition fait des gagnants et des perdants bien identifi\u00e9s. Les traders de court terme aux revenus \u00e9lev\u00e9s pourraient payer moins qu&rsquo;aujourd&rsquo;hui.<\/p>\n\n<p>\u00c0 l&rsquo;inverse, les d\u00e9tenteurs de long terme perdraient l&rsquo;une des incitations \u00e0 l&rsquo;investissement les plus g\u00e9n\u00e9reuses d&rsquo;Allemagne. Les plus-values r\u00e9alis\u00e9es en moins de douze mois peuvent aujourd&rsquo;hui \u00eatre impos\u00e9es \u00e0 des taux proches de <b>45 %<\/b>.<\/p>\n\n<ul>\n  <li><b>Traders de court terme :<\/b> des factures fiscales potentiellement plus l\u00e9g\u00e8res avec le pr\u00e9l\u00e8vement forfaitaire \u00e0 la source.<\/li>\n  <li><b>D\u00e9tenteurs de long terme :<\/b> plus de sortie en franchise d&rsquo;imp\u00f4t pour les achats effectu\u00e9s apr\u00e8s la date butoir propos\u00e9e.<\/li>\n  <li><b>Allocataires europ\u00e9ens :<\/b> les avantages fiscaux li\u00e9s \u00e0 la juridiction m\u00e9ritent d\u00e9sormais une place plus r\u00e9duite dans les mod\u00e8les d&rsquo;investissement.<\/li>\n<\/ul>\n\n<p>L&rsquo;Allemagne place de fait la crypto au m\u00eame rang que les actions et les obligations. Par cons\u00e9quent, la vieille strat\u00e9gie europ\u00e9enne consistant \u00e0 conserver ses jetons un an semble de plus en plus provisoire.<\/p>\n\n<h2>PayPal construit une deuxi\u00e8me couche dollar<\/h2>\n\n<p>PayPal \u00e9tend son infrastructure de stablecoins plut\u00f4t que de lancer un nouveau jeton grand public. Le 9 septembre, PayPal, M0 et MoonPay ont pr\u00e9sent\u00e9 <b>PYUSDx<\/b>.<\/p>\n\n<p>La plateforme permet aux entreprises d&rsquo;\u00e9mettre des stablecoins \u00e0 leur marque adoss\u00e9s \u00e0 PayPal USD. Concr\u00e8tement, elle propose un rail de r\u00e8glement en marque blanche aux soci\u00e9t\u00e9s qui veulent des dollars programmables.<\/p>\n\n<p>La structure comporte deux couches. <b>PYUSD<\/b>, \u00e9mis par Paxos Trust Company, forme la base et d\u00e9tient des d\u00e9p\u00f4ts en dollars et des bons du Tr\u00e9sor.<\/p>\n\n<p>Au-dessus se trouvent les jetons PYUSDx, \u00e9mis par MoonPay Digital Assets Limited. Chaque entreprise peut d\u00e9finir ses r\u00e8gles de transfert, ses r\u00e9compenses, ses politiques de collat\u00e9ral et les blockchains prises en charge.<\/p>\n\n<p>Ces jetons ne sont toutefois pas des produits PayPal au sens grand public. Les utilisateurs ne peuvent ni les envoyer ni les recevoir via PayPal ou Venmo.<\/p>\n\n<p>Les premiers projets ont d\u00e9j\u00e0 trait\u00e9 plus de <b>$100 millions<\/b> de volume. Ce chiffre compte, car il signale un usage de tr\u00e9sorerie et de r\u00e8glement plut\u00f4t qu&rsquo;un simple effet de nouveaut\u00e9 aupr\u00e8s des particuliers.<\/p>\n\n<p>Pour les march\u00e9s, PYUSDx n&rsquo;est pas un ticker \u00e0 chasser. Il montre plut\u00f4t que la fintech \u00e9volue vers des r\u00e9seaux de liquidit\u00e9s r\u00e9glement\u00e9s et programmables.<\/p>\n\n<h2>Washington met \u00e0 l&rsquo;\u00e9preuve la d\u00e9centralisation revendiqu\u00e9e par la DeFi<\/h2>\n\n<p>Une version r\u00e9vis\u00e9e du Clarity Act, longue de <b>630 pages<\/b>, s&rsquo;achemine vers un vote de proc\u00e9dure le 15 septembre. Ses dispositions les plus lourdes de cons\u00e9quences portent sur le contr\u00f4le des protocoles DeFi.<\/p>\n\n<p>Le texte d\u00e9finit un \u00ab protocole de n\u00e9gociation de finance non d\u00e9centralis\u00e9e \u00bb. Cette qualification s&rsquo;appliquerait lorsqu&rsquo;une personne ou un groupe coordonn\u00e9 peut modifier de mani\u00e8re substantielle le fonctionnement ou les r\u00e8gles de consensus.<\/p>\n\n<p>Ces protocoles devraient s&rsquo;enregistrer aupr\u00e8s de la <b>Commodity Futures Trading Commission<\/b>. Les dispositions visent toutefois sp\u00e9cifiquement les transactions spot et au comptant portant sur des mati\u00e8res premi\u00e8res num\u00e9riques.<\/p>\n\n<p>La v\u00e9ritable incertitude se situe du c\u00f4t\u00e9 des r\u00e9gulateurs. La CFTC et le Tr\u00e9sor am\u00e9ricain r\u00e9digeraient les r\u00e8gles d\u00e9finissant le contr\u00f4le, qu&rsquo;il s&rsquo;agisse de multisignatures, de votes de gouvernance ou de mises \u00e0 jour logicielles.<\/p>\n\n<p>Les investisseurs devraient donc examiner bien plus que la valeur totale verrouill\u00e9e et le rendement affich\u00e9. Ils devraient demander qui contr\u00f4le la tr\u00e9sorerie, les cl\u00e9s de mise \u00e0 jour et les interrupteurs d&rsquo;urgence.<\/p>\n\n<h2>L&rsquo;Inde fait entrer la roupie num\u00e9rique sur le march\u00e9 obligataire<\/h2>\n\n<p>L&rsquo;Inde fait passer sa monnaie num\u00e9rique de banque centrale de gros au-del\u00e0 du stade pilote. Son nouveau syst\u00e8me <b>Demat 2.0<\/b> tokenise des obligations d&rsquo;entreprise et les r\u00e8gle en roupies num\u00e9riques.<\/p>\n\n<p>Trois op\u00e9rations ont permis d&rsquo;\u00e9mettre environ <b>\u20b91 025 crores<\/b>, soit pr\u00e8s de <b>$116 millions<\/b>, d&rsquo;obligations d&rsquo;entreprise tokenis\u00e9es. Les d\u00e9positaires l\u00e9gaux de l&rsquo;Inde g\u00e8rent le registre.<\/p>\n\n<p>Le syst\u00e8me est directement connect\u00e9 \u00e0 l&rsquo;Unified Market Interface de la Banque de r\u00e9serve de l&rsquo;Inde. Les esp\u00e8ces et les titres peuvent ainsi \u00eatre r\u00e9gl\u00e9s de fa\u00e7on atomique en une seule transaction.<\/p>\n\n<p>Cela r\u00e9duit l&rsquo;exposition au risque de contrepartie et supprime les d\u00e9lais de r\u00e8glement. Surtout, cela donne aux acteurs du march\u00e9 de gros une raison concr\u00e8te d&rsquo;utiliser une infrastructure de CBDC.<\/p>\n\n<h2>Le rendement institutionnel passe derri\u00e8re les murs de la conservation<\/h2>\n\n<p>Frgmnt s&rsquo;est associ\u00e9 \u00e0 Anchorage Digital pour distribuer son stablecoin <b>fUSD<\/b> et son produit de staking <b>sfUSD<\/b>. L&rsquo;accord cible les institutions en qu\u00eate de rendement on-chain avec une conservation famili\u00e8re.<\/p>\n\n<p>Le fUSD est \u00e9mis contre de l&rsquo;<b>USDC<\/b> et d\u00e9ploy\u00e9 sur une s\u00e9lection de march\u00e9s de pr\u00eat. Les clients peuvent le staker pour obtenir du sfUSD, qui per\u00e7oit des r\u00e9compenses g\u00e9n\u00e9r\u00e9es par la strat\u00e9gie.<\/p>\n\n<p>Les clients d&rsquo;Anchorage peuvent \u00e9mettre, d\u00e9tenir, staker, d\u00e9staker et racheter au sein d&rsquo;un m\u00eame dispositif de conservation. La structure r\u00e9duit ainsi une partie des frictions op\u00e9rationnelles li\u00e9es \u00e0 l&rsquo;acc\u00e8s \u00e0 la DeFi.<\/p>\n\n<h2>\u00c0 surveiller<\/h2>\n\n<ol>\n  <li><b>La cl\u00f4ture hebdomadaire du BTC :<\/b> surveillez l&rsquo;EMA 50 semaines et la zone de support de $72 000 \u00e0 $74 000.<\/li>\n  <li><b>Le calendrier fiscal allemand :<\/b> les achats effectu\u00e9s avant et apr\u00e8s le 1er janvier 2027 pourraient recevoir un traitement tr\u00e8s diff\u00e9rent.<\/li>\n  <li><b>Le contr\u00f4le des protocoles :<\/b> la concentration de la gouvernance pourrait devenir un risque r\u00e9glementaire, et pas seulement une question technique.<\/li>\n  <li><b>Le r\u00e8glement tokenis\u00e9 :<\/b> les op\u00e9rations obligataires de l&rsquo;Inde montrent o\u00f9 l&rsquo;adoption des CBDC pourrait d&rsquo;abord devenir commercialement utile.<\/li>\n<\/ol>\n\n<p>La crypto est entra\u00een\u00e9e dans les rouages plus anciens du syst\u00e8me financier. Pourtant, ce processus cr\u00e9e de nouveaux march\u00e9s, de nouveaux risques et une distinction bien plus nette entre la d\u00e9centralisation comme slogan et le contr\u00f4le comme r\u00e9alit\u00e9.<\/p>\n\n\n<h2 class=\"wp-block-heading volity-related-coverage\">Articles connexes sur Volity<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/volity.io\/fr\/crypto\/how-to-avoid-crypto-scams\/\">Comment \u00e9viter les arnaques crypto : liste de s\u00e9curit\u00e9 pour d\u00e9butants<\/a><\/li>\n<li><a href=\"https:\/\/volity.io\/fr\/trading-platforms-fr\/how-to-choose-a-trading-platform\/\">Comment choisir une plateforme de trading : une liste de v\u00e9rification en 10 points<\/a><\/li>\n<li><a href=\"https:\/\/volity.io\/fr\/trader\/demo-vs-live-trading-account\/\">D\u00e9mo vs compte de trading r\u00e9el : une liste de v\u00e9rification en 7 \u00e9tapes avant de passer en direct<\/a><\/li>\n<li><a href=\"https:\/\/volity.io\/fr\/trader\/position-sizing-risk-per-trade\/\">Comment dimensionner un trade : taille de position et risque par trade pour d\u00e9butants<\/a><\/li>\n<li><a href=\"https:\/\/volity.io\/fr\/trader\/risk-reward-ratio-explained\/\">Ratio risque-rendement expliqu\u00e9 : comment le d\u00e9finir et pourquoi il compte<\/a><\/li>\n<li><a href=\"https:\/\/volity.io\/fr\/actions\/etf-vs-index-fund\/\">ETF vs fonds indiciel : la diff\u00e9rence et lequel choisir<\/a><\/li>\n<\/ul>\n\n\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"NewsArticle\",\"headline\":\"March\u00e9 crypto : le Bitcoin, la fiscalit\u00e9 et les risques DeFi\",\"datePublished\":\"2026-09-11T13:47:35+00:00\",\"dateModified\":\"2026-09-11T13:47:35+00:00\",\"author\":{\"@type\":\"Person\",\"name\":\"Alexander 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