{"id":535,"date":"2026-01-20T11:23:56","date_gmt":"2026-01-20T10:23:56","guid":{"rendered":"https:\/\/blog.acubeapi.com\/ksef-system-efaktur-w-polsce\/"},"modified":"2026-02-04T11:39:11","modified_gmt":"2026-02-04T10:39:11","slug":"ksef-system-efaktur-w-polsce","status":"publish","type":"post","link":"https:\/\/blog.acubeapi.com\/pl\/ksef-system-efaktur-w-polsce\/","title":{"rendered":"KSeF \u2013 System eFaktur w Polsce"},"content":{"rendered":"\n<!-- FAQ Component (details\/summary) + Microdata -->\n<section class=\"faq-root\" style=\"--faq-accent: #ff2a13;\n--faq-q-bg: #2c4168;\n--faq-q-text: #ffffff;\n--faq-a-bg: #dddddd;\n--faq-a-text: #1f2a62;\n--kp-bg: #2c4168;\n--kp-title-color: #ffffff;\n--kp-text-color: #e3e3e3;\n--kp-border-color: #1f2430;\n--kp-border-width: 1px;\n--kp-radius: 14px;\n--kp-padding: 16px;\n--kp-gap: 6px;\n--kp-marker-color: #ff2a13;\n--kp-list-style: disc;\n--kp-shadow: none;\n--faq-border-top: 0px;\n--faq-border-right: 0px;\n--faq-border-bottom: 0px;\n--faq-border-left: 0px;\n--faq-border-color: #1f2a62;\n--faq-radius: 14px;\n--faq-gap: 10px;\n--faq-padding: 14px;\n--faq-margin-block: 0px;\n--faq-icon-size: 18px;\n--faq-icon-gap: 10px;\n--faq-a-lh: 1.5;\n--faq-q-fs: 16px;\n--faq-a-fs: 15px;\n--faq-q-fw: 600;\n--faq-a-fw: 400;\n--faq-width: 100%;\n--faq-ml: auto;\n--faq-mr: auto;\n--faq-q-pt: 14px;\n--faq-q-pr: 14px;\n--faq-q-pb: 14px;\n--faq-q-pl: 14px;\n--faq-a-pt: 12px;\n--faq-a-pr: 14px;\n--faq-a-pb: 14px;\n--faq-a-pl: 14px;\n--faq-shadow: 0 5px 10px rgba(0,0,0,0.35);\">\n  <section class=\"faq-key-points\" aria-label=\"Key Points\">\n    <h3>Najwa\u017cniejsze informacje z artyku\u0142u:<\/h3>\n    <ul>\n      <li>KSeF to centralna platforma do wystawiania faktur ustrukturyzowanych, kt\u00f3ra gwarantuje ich natychmiastowe dor\u0119czenie do administracji skarbowej oraz kontrahenta.<\/li>\n      <li>Harmonogram wdra\u017cania systemu przewiduje trzy kluczowe etapy, zaczynaj\u0105c od najwi\u0119kszych firm w lutym 2026 r., poprzez pozosta\u0142ych podatnik\u00f3w VAT w kwietniu 2026 r., a\u017c po mikroprzedsi\u0119biorc\u00f3w w styczniu 2027 r.<\/li>\n      <li>Stosowanie e-faktur skraca termin zwrotu podatku VAT z 60 do 40 dni oraz zdejmuje z przedsi\u0119biorcy obowi\u0105zek przesy\u0142ania plik\u00f3w JPK_FA na \u017c\u0105danie urz\u0119du.<\/li>\n<li>Ministerstwo Finans\u00f3w udost\u0119pni\u0142o bezp\u0142atn\u0105 aplikacj\u0119 mobiln\u0105 KSeF 1.0, kt\u00f3ra pozwala na wystawianie i przegl\u0105danie faktur bezpo\u015brednio na smartfonie.<\/li>\n    <\/ul>\n  <\/section>\n\n<style>\n\/* Minimalny CSS dla FAQ *\/\n\/* Key Points *\/\n.faq-key-points { font-family: var(--faq-font, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto) !important;background: var(--kp-bg, #12141a) !important; color: var(--kp-text-color, #cbd5e1) !important; border: var(--kp-border-width, 1px) solid var(--kp-border-color, rgba(148, 163, 184, 0.25)) !important; border-radius: var(--kp-radius, 12px) !important; padding: var(--kp-padding, 16px) !important; margin-bottom: calc(var(--faq-gap, 16px) * 1.5) !important; box-shadow: var(--kp-shadow, none) !important;}\n.faq-key-points h3 { margin: 0 0 8px !important; font-size: 0.85rem !important; letter-spacing: 0.08em !important; text-transform: uppercase !important; color: var(--kp-title-color, #94a3b8) !important;}\n.faq-key-points ul { margin: 0 !important; padding-left: 20px !important; color: inherit !important; list-style-type: var(--kp-list-style, disc) !important; }\n.faq-key-points li { margin: 0 0 var(--kp-gap, 6px) !important; }\n.faq-key-points li:last-child { margin-bottom: 0 !important; }\n.faq-key-points li::marker { color: var(--kp-marker-color, currentColor) !important; }\n.faq-root { border:0; font-family: var(--faq-font, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto) !important; width: var(--faq-width, 100%) !important; margin-left: var(--faq-ml, auto) !important; margin-right: var(--faq-mr, auto) !important; }\n.faq { display: grid !important; gap: var(--faq-gap) !important; }\n.faq details { border-radius: var(--faq-radius) !important; overflow: clip !important; border-style: solid !important; border-color: var(--faq-border-color) !important; border-width: var(--faq-border-top) var(--faq-border-right) var(--faq-border-bottom) var(--faq-border-left) !important; background: var(--faq-q-bg) !important; margin-block: var(--faq-margin-block) !important; box-shadow: var(--faq-shadow) !important; }\n.faq summary { list-style: none !important; cursor: pointer !important; position: relative !important; padding: var(--faq-q-pt, var(--faq-padding)) var(--faq-q-pr, var(--faq-padding)) var(--faq-q-pb, var(--faq-padding)) var(--faq-q-pl, var(--faq-padding)) !important; color: var(--faq-q-text) !important; font-weight: var(--faq-q-fw, 600) !important; display: flex !important; align-items: center !important; gap: var(--faq-icon-gap, 10px) !important; font-size: var(--faq-q-fs, 16px) !important;}\n.faq summary::-webkit-details-marker { display: none; !important}\n.faq summary .icon-chevron { flex: 0 0 auto !important; width: var(--faq-icon-size) !important; height: var(--faq-icon-size) !important; border: 2px solid var(--faq-accent) !important; border-left: 0 !important; border-top: 0 !important; transform: rotate(45deg) !important; transition: transform .2s ease !important; opacity: .8 !important; }\n.faq details[open] summary .icon-chevron { transform: rotate(225deg) !important; }\n.faq summary .icon-plus { flex: 0 0 auto !important; width: var(--faq-icon-size) !important; height: var(--faq-icon-size) !important; position: relative !important; }\n.faq summary .icon-plus::before,.faq summary .icon-plus::after { content: '' !important; position: absolute !important; background: var(--faq-accent) !important; }\n.faq summary .icon-plus::before { width: 100% !important; height: 2px !important; top: 50% !important; left: 0 !important; transform: translateY(-50%) !important; }\n.faq summary .icon-plus::after { width: 2px !important; height: 100% !important; left: 50% !important; top: 0 !important; transform: translateX(-50%) !important; transition: transform .2s ease, opacity .2s ease !important; }\n.faq details[open] summary .icon-plus::after { transform: translateX(-50%) rotate(90deg) !important; opacity: 0 !important; }\n.faq summary .icon-arrow { flex: 0 0 auto !important; width: 0 !important; height: 0 !important; border-left: calc(var(--faq-icon-size) * 0.5) solid transparent !important; border-right: calc(var(--faq-icon-size) * 0.5) solid transparent !important; border-top: calc(var(--faq-icon-size) * 0.6) solid var(--faq-accent) !important; transition: transform .2s ease !important; }\n.faq details[open] summary .icon-arrow { transform: rotate(180deg) !important; }\n.faq .answer {  padding: var(--faq-a-pt, calc(var(--faq-padding) - 2px)) var(--faq-a-pr, var(--faq-padding)) var(--faq-a-pb, var(--faq-padding)) var(--faq-a-pl, var(--faq-padding)) !important; background: var(--faq-a-bg) !important; color: var(--faq-a-text) !important; border-top: 1px solid var(--faq-border-color) !important; font-weight: var(--faq-a-fw, 400) !important; font-size: var(--faq-a-fs, 15px) !important;line-height: var(--faq-a-lh, 1.5) !important;}\n<\/style>\n\n\n<p>Krajowy System e-Faktur (KSeF) to centralna platforma w Polsce. Od stycznia 2022 roku korzystanie z tego systemu by\u0142o dobrowolne, a jego celem by\u0142o w\u00f3wczas u\u0142atwienie obiegu faktur oraz zapewnienie wi\u0119kszej kontroli nad prawid\u0142owo\u015bci\u0105 dokument\u00f3w podatkowych.<strong> Co jeszcze warto wiedzie\u0107 w zakresie funkcjonowania KSeF?<\/strong> Aktualne informacje na ten temat i obowi\u0105zkowe terminy zosta\u0142y uj\u0119te w poni\u017cszym artykule.<\/p>\n<h2>Co to jest KSeF?<\/h2>\n<p><strong>Krajowy System e-Faktur (KSeF) umo\u017cliwia przedsi\u0119biorcom wystawianie i otrzymywanie tzw. faktur ustrukturyzowanych<\/strong>. Platforma nie tylko odpowiada za centralne przechowywanie i weryfikowanie faktur, ale r\u00f3wnie\u017c usprawnia procesy rozliczeniowe. KSeF skraca czas obiegu dokument\u00f3w i jednocze\u015bnie wzmacnia kontrol\u0119 podatkow\u0105. Dzi\u0119ki funkcjonowaniu tego systemu<strong> faktura jest natychmiast dost\u0119pna dla administracji skarbowej<\/strong>, a przedsi\u0119biorca zyskuje gwarancj\u0119 jej skutecznego dor\u0119czenia.\u00a0<\/p>\n<p><strong>Linki:<\/strong><\/p>\n<ul>\n<li><a href=\"https:\/\/www.podatki.gov.pl\/ksef\/\" rel=\"nofollow\">https:\/\/www.podatki.gov.pl\/ksef\/<\/a>;<\/li>\n<li><a href=\"https:\/\/www.podatki.gov.pl\/ksef\/pytania-i-odpowiedzi-ksef\/\" rel=\"nofollow\">https:\/\/www.podatki.gov.pl\/ksef\/pytania-i-odpowiedzi-ksef\/<\/a>;<\/li>\n<li><a href=\"https:\/\/www.podatki.gov.pl\/e-deklaracje\/dokumentacja-it\/struktury-dokumentow-xml\/#ksef\" rel=\"nofollow\">https:\/\/www.podatki.gov.pl\/e-deklaracje\/dokumentacja-it\/struktury-dokumentow-xml\/#ksef<\/a>;<\/li>\n<li><a href=\"https:\/\/www.podatki.gov.pl\/vat\/formularze-do-druku-vat\/#ZAW-FA\" rel=\"nofollow\">https:\/\/www.podatki.gov.pl\/vat\/formularze-do-druku-vat\/#ZAW-FA<\/a>.\u00a0<\/li>\n<\/ul>\n<h2>KSeF \u2013 zakres i harmonogram<\/h2>\n<p>Systemem KSeF obj\u0119ci s\u0105 wszyscy przedsi\u0119biorcy w Polsce, w tym czynni i zwolnieni podatnicy VAT, a tak\u017ce podmioty zagraniczne, posiadaj\u0105ce polski NIP lub prowadz\u0105ce dzia\u0142alno\u015b\u0107 w Polsce dla cel\u00f3w VAT. <strong>Obowi\u0105zek korzystania z KSeF zosta\u0142 przesuni\u0119ty na lata 2026\u20132027<\/strong>. Tym samym zast\u0105pi\u0142 wcze\u015bniejsze plany w tym zakresie przewidziane na rok 2024.\u00a0<\/p>\n<ul>\n<li><strong>1 lutego 2026 <\/strong>\u2013 KSeF stanie si\u0119 obowi\u0105zkowy dla du\u017cych przedsi\u0119biorstw, kt\u00f3rych obr\u00f3t przekroczy\u0142 200 mln z\u0142. Od tego momentu b\u0119d\u0105 musia\u0142y wystawia\u0107 faktury sprzeda\u017cy wy\u0142\u0105cznie przez KSeF. Z kolei ma\u0142e i \u015brednie przedsi\u0119biorstwa skorzystaj\u0105 z KSeF jedynie do odbierania faktur zakupowych.<\/li>\n<li><strong>1 kwietnia 2026 <\/strong>\u2013 KSeF b\u0119dzie obowi\u0105zkowy dla pozosta\u0142ych czynnych i zwolnionych z VAT podatnik\u00f3w (z pomini\u0119ciem najmniejszych);<\/li>\n<li><strong>1 stycznia 2027<\/strong> \u2013 systemem KSeF zostan\u0105 obj\u0119te mniejsze podmioty i mikroprzedsi\u0119biorstwa, kt\u00f3rych miesi\u0119czna sprzeda\u017c wynosi do 10 tys.<\/li>\n<\/ul>\n<h2>Krajowy System e-faktur \u2013 przygotowanie<\/h2>\n<p>Firmy obj\u0119te nowymi regulacjami powinny z <strong>odpowiednim wyprzedzeniem <\/strong>zaplanowa\u0107 przej\u015bcie na KSeF:<\/p>\n<ul>\n<li>analizuj\u0105c obecne procesy fakturowania;<\/li>\n<li>dostosowuj\u0105c systemy informatyczne do wymog\u00f3w technicznych;<\/li>\n<li>korzystaj\u0105c ze wsparcia ekspert\u00f3w podatkowych i technologicznych.<\/li>\n<\/ul>\n<p>Brak dostosowania si\u0119 do przepis\u00f3w mo\u017ce<strong> uniemo\u017cliwi\u0107 prawid\u0142owe wystawianie faktur sprzeda\u017cowych<\/strong>, co wprost prze\u0142o\u017cy si\u0119 na op\u00f3\u017anienia w rozliczeniach i zaburzenia p\u0142ynno\u015bci finansowej. Wdro\u017cenie KSeF wp\u0142ynie tak\u017ce na<strong> spos\u00f3b zarz\u0105dzania nale\u017cno\u015bciami i zobowi\u0105zaniami <\/strong>\u2013 w\u0142a\u015bnie dlatego wewn\u0119trzne procedury powinny by\u0107 zmienione i przetestowane z wyprzedzeniem, gwarantuj\u0105c sprawne funkcjonowanie przedsi\u0119biorstwa po uruchomieniu KSeF.\u00a0<\/p>\n<h2>Zalety rozwi\u0105zania<\/h2>\n<ul>\n<li>Jeden wz\u00f3r wszystkich rodzaj\u00f3w faktur \u2013 uproszczone przepisy dotycz\u0105ce fakturowania.<\/li>\n<li>Ograniczenie b\u0142\u0119d\u00f3w na fakturach. Redukcja ilo\u015bci b\u0142\u0119d\u00f3w rachunkowych, zapobieganie nieprawid\u0142owo\u015bciom w zakresie podatk\u00f3w (zar\u00f3wno VAT, jak i akcyzy oraz podatk\u00f3w dochodowych).<\/li>\n<li>Szybszy zwrot VAT \u2013 z 60 do 40 dni.<\/li>\n<li>Minimalne ryzyko zagubienia faktur \u2013 bezpieczne przechowywanie faktur (nie zostan\u0105 zniszczone, nie zgin\u0105, co wyeliminuje te\u017c duplikaty faktur). Ministerstwo Finans\u00f3w b\u0119dzie przechowywa\u0142o dokumenty przez okres dziesi\u0119ciu lat.<\/li>\n<li>\u015aledzenie faktury od chwili zam\u00f3wienia do momentu p\u0142atno\u015bci.<\/li>\n<li>Wyeliminowanie konieczno\u015bci przesy\u0142ania dodatkowo Jednolitego Pliku Kontrolnego dla Faktur (JPK_FA) \u2013 dane te b\u0119d\u0105 dost\u0119pne w ramach KSeF.<\/li>\n<li>Brak obowi\u0105zku archiwizowania faktur papierowych, co prze\u0142o\u017cy si\u0119 na ograniczenie stosowania papieru i zredukuje koszty. E-faktur nie trzeba drukowa\u0107 lub wysy\u0142a\u0107 poczt\u0105.<\/li>\n<li>Automatyzacja proces\u00f3w pomi\u0119dzy r\u00f3\u017cnymi systemami.<\/li>\n<\/ul>\n<h2>Jak wdro\u017cy\u0107 KSeF?<\/h2>\n<p>W przypadku jednoosobowej dzia\u0142alno\u015bci gospodarczej wystarczy <strong>zalogowanie si\u0119 przez profil zaufany lub za pomoc\u0105 podpisu kwalifikowanego<\/strong>. Sp\u00f3\u0142ki oraz inne podmioty musz\u0105 wskaza\u0107 osob\u0119 uprawnion\u0105 do pierwszego logowania i zg\u0142osi\u0107 j\u0105 do urz\u0119du skarbowego<strong> za pomoc\u0105 formularza ZAW-FA<\/strong>. W dalszej kolejno\u015bci nale\u017cy:<\/p>\n<ul>\n<li><strong>wygenerowa\u0107 certyfikat KSeF<\/strong> \u2013 jest to indywidualny klucz umo\u017cliwiaj\u0105cy komunikacj\u0119 z systemem. Certyfikat mo\u017cna utworzy\u0107 w aplikacji dost\u0119pnej na stronie <a href=\"http:\/\/mcu.mf.gov.pl\" rel=\"nofollow\">mcu.mf.gov.pl<\/a>.<\/li>\n<li><strong>zintegrowa\u0107 KSeF z programem do fakturowania<\/strong> \u2013 dzi\u0119ki temu przedsi\u0119biorca mo\u017ce nadal korzysta\u0107 ze swojego dotychczasowego oprogramowania, a wystawiane faktury b\u0119d\u0105 automatycznie przekazywane do KSeF.<\/li>\n<\/ul>\n<h2>E-faktury w aplikacji mobilnej<\/h2>\n<p>Mimo przesuni\u0119cia terminu obowi\u0105zkowego e-fakturowania w ramach KSeF, Ministerstwo Finans\u00f3w kontynuuje prace nad zapewnieniem podatnikom darmowych narz\u0119dzi wspieraj\u0105cych. <strong>Zosta\u0142a udost\u0119pniona produkcyjna wersja <\/strong><a href=\"https:\/\/ksef.podatki.gov.pl\/aplikacja-podatnika-ksef-i-inne-narzedzia\/aplikacja-mobilna-ksef\/\" rel=\"nofollow\"><strong>aplikacji mobilnej KSeF 1.0<\/strong><\/a>. Umo\u017cliwia ona wystawienie podstawowych i koryguj\u0105cych faktur bezpo\u015brednio z telefonu. U\u017cytkownicy mog\u0105 r\u00f3wnie\u017c przegl\u0105da\u0107 zar\u00f3wno otrzymane, jak i wys\u0142ane faktury za po\u015brednictwem KSeF.<\/p>\n<h2>Najcz\u0119\u015bciej zadawane pytania o KSeF<\/p>\n<\/h2>\n\n\n<!-- FAQ Component (details\/summary) + Microdata -->\n<section class=\"faq-root\" style=\"--faq-accent: #ff2a13;\n--faq-q-bg: #2c4168;\n--faq-q-text: #ffffff;\n--faq-a-bg: #dddddd;\n--faq-a-text: #1f2a62;\n--kp-bg: #2c4168;\n--kp-title-color: #ffffff;\n--kp-text-color: #e3e3e3;\n--kp-border-color: #1f2430;\n--kp-border-width: 1px;\n--kp-radius: 14px;\n--kp-padding: 16px;\n--kp-gap: 6px;\n--kp-marker-color: #ff2a13;\n--kp-list-style: disc;\n--kp-shadow: none;\n--faq-border-top: 0px;\n--faq-border-right: 0px;\n--faq-border-bottom: 0px;\n--faq-border-left: 0px;\n--faq-border-color: #1f2a62;\n--faq-radius: 14px;\n--faq-gap: 10px;\n--faq-padding: 14px;\n--faq-margin-block: 0px;\n--faq-icon-size: 18px;\n--faq-icon-gap: 10px;\n--faq-a-lh: 1.5;\n--faq-q-fs: 16px;\n--faq-a-fs: 15px;\n--faq-q-fw: 600;\n--faq-a-fw: 400;\n--faq-width: 100%;\n--faq-ml: auto;\n--faq-mr: auto;\n--faq-q-pt: 14px;\n--faq-q-pr: 14px;\n--faq-q-pb: 14px;\n--faq-q-pl: 14px;\n--faq-a-pt: 12px;\n--faq-a-pr: 14px;\n--faq-a-pb: 14px;\n--faq-a-pl: 14px;\n--faq-shadow: 0 5px 10px rgba(0,0,0,0.35);\">\n  <div class=\"faq\" aria-label=\"FAQ\" itemscope itemtype=\"https:\/\/schema.org\/FAQPage\">\n  <div itemprop=\"mainEntity\" itemscope itemtype=\"https:\/\/schema.org\/Question\">\n    <details>\n      <summary><span class=\"icon-chevron\"><\/span><span itemprop=\"name\">Czy faktury papierowe s\u0105 nadal potrzebne?<\/span><\/summary>\n      <div class=\"answer\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n        <div itemprop=\"text\">Korzystanie z KSeF eliminuje obowi\u0105zek przechowywania faktur papierowych, co pozwala na ograniczenie koszt\u00f3w i u\u017cycia papieru.<\/div>\n      <\/div>\n    <\/details>\n  <\/div>\n  <div itemprop=\"mainEntity\" itemscope itemtype=\"https:\/\/schema.org\/Question\">\n    <details>\n      <summary><span class=\"icon-chevron\"><\/span><span itemprop=\"name\">Czy istnieje aplikacja mobilna KSeF?<\/span><\/summary>\n      <div class=\"answer\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n        <div itemprop=\"text\">Ministerstwo Finans\u00f3w udost\u0119pni\u0142o aplikacj\u0119 mobiln\u0105, kt\u00f3ra pozwala na wystawianie podstawowych i koryguj\u0105cych faktur. Dzi\u0119ki niej mo\u017cliwe jest tak\u017ce z przegl\u0105danie zar\u00f3wno otrzymanych, jak i wys\u0142anych dokument\u00f3w bezpo\u015brednio z telefonu.<\/div>\n      <\/div>\n    <\/details>\n  <\/div>\n  <div itemprop=\"mainEntity\" itemscope itemtype=\"https:\/\/schema.org\/Question\">\n    <details>\n      <summary><span class=\"icon-chevron\"><\/span><span itemprop=\"name\">Czy ka\u017cdy przedsi\u0119biorca musi od razu korzysta\u0107 z KSeF?<\/span><\/summary>\n      <div class=\"answer\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n        <div itemprop=\"text\">Mniejsze podmioty mog\u0105 korzysta\u0107 z systemu dobrowolnie do czasu wprowadzenia obowi\u0105zkowego korzystania zgodnie z harmonogramem.<\/div>\n      <\/div>\n    <\/details>\n  <\/div>\n  <\/div>\n<\/section>\n\n<style>\n\/* Minimalny CSS dla FAQ *\/\n\/* Key Points *\/\n.faq-key-points { font-family: var(--faq-font, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto) !important;background: var(--kp-bg, #12141a) !important; 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align-items: center !important; gap: var(--faq-icon-gap, 10px) !important; font-size: var(--faq-q-fs, 16px) !important;}\n.faq summary::-webkit-details-marker { display: none; !important}\n.faq summary .icon-chevron { flex: 0 0 auto !important; width: var(--faq-icon-size) !important; height: var(--faq-icon-size) !important; border: 2px solid var(--faq-accent) !important; border-left: 0 !important; border-top: 0 !important; transform: rotate(45deg) !important; transition: transform .2s ease !important; opacity: .8 !important; }\n.faq details[open] summary .icon-chevron { transform: rotate(225deg) !important; }\n.faq summary .icon-plus { flex: 0 0 auto !important; width: var(--faq-icon-size) !important; height: var(--faq-icon-size) !important; position: relative !important; }\n.faq summary .icon-plus::before,.faq summary .icon-plus::after { content: '' !important; position: absolute !important; background: var(--faq-accent) !important; }\n.faq summary .icon-plus::before { width: 100% !important; height: 2px !important; top: 50% !important; left: 0 !important; transform: translateY(-50%) !important; }\n.faq summary .icon-plus::after { width: 2px !important; height: 100% !important; left: 50% !important; top: 0 !important; transform: translateX(-50%) !important; transition: transform .2s ease, opacity .2s ease !important; }\n.faq details[open] summary .icon-plus::after { transform: translateX(-50%) rotate(90deg) !important; opacity: 0 !important; }\n.faq summary .icon-arrow { flex: 0 0 auto !important; width: 0 !important; height: 0 !important; border-left: calc(var(--faq-icon-size) * 0.5) solid transparent !important; border-right: calc(var(--faq-icon-size) * 0.5) solid transparent !important; border-top: calc(var(--faq-icon-size) * 0.6) solid var(--faq-accent) !important; transition: transform .2s ease !important; }\n.faq details[open] summary .icon-arrow { transform: rotate(180deg) !important; }\n.faq .answer {  padding: var(--faq-a-pt, calc(var(--faq-padding) - 2px)) var(--faq-a-pr, var(--faq-padding)) var(--faq-a-pb, var(--faq-padding)) var(--faq-a-pl, var(--faq-padding)) !important; background: var(--faq-a-bg) !important; color: var(--faq-a-text) !important; border-top: 1px solid var(--faq-border-color) !important; font-weight: var(--faq-a-fw, 400) !important; font-size: var(--faq-a-fs, 15px) !important;line-height: var(--faq-a-lh, 1.5) !important;}\n<\/style>\n\n\n\n<p class=\"wp-block-paragraph\"><br>\u0179r\u00f3d\u0142a:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/taxnews.ey.com\/news\/2025-0955-poland-ministry-of-finance-updates-obligatory-e-invoicing-regulations\" rel=\"nofollow\">https:\/\/taxnews.ey.com\/news\/2025-0955-poland-ministry-of-finance-updates-obligatory-e-invoicing-regulations<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.ey.com\/en_gl\/technical\/tax-alerts\/poland-signs-into-law-mandatory-national-e-invoicing-system\" rel=\"nofollow\">https:\/\/www.ey.com\/en_gl\/technical\/tax-alerts\/poland-signs-into-law-mandatory-national-e-invoicing-system<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/ksef.pl\/\" rel=\"nofollow\">https:\/\/ksef.pl\/<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.gov.pl\/web\/finanse\/obowiazkowy-ksef-odroczony-do-1-lutego-2026-r\" rel=\"nofollow\">https:\/\/www.gov.pl\/web\/finanse\/obowiazkowy-ksef-odroczony-do-1-lutego-2026-r<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Najwa\u017cniejsze informacje z artyku\u0142u: KSeF to centralna platforma do wystawiania faktur ustrukturyzowanych, kt\u00f3ra gwarantuje ich natychmiastowe dor\u0119czenie do administracji skarbowej oraz kontrahenta. Harmonogram wdra\u017cania systemu przewiduje trzy kluczowe etapy, zaczynaj\u0105c od najwi\u0119kszych firm w lutym 2026 r., poprzez pozosta\u0142ych podatnik\u00f3w VAT w kwietniu 2026 r., a\u017c po mikroprzedsi\u0119biorc\u00f3w w styczniu 2027 r. Stosowanie e-faktur skraca termin zwrotu podatku VAT z &#8230; <\/p>\n<div><a href=\"https:\/\/blog.acubeapi.com\/pl\/ksef-system-efaktur-w-polsce\/\" class=\"more-link\">Read More<\/a><\/div>\n","protected":false},"author":233060044,"featured_media":2691,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","jetpack_post_was_ever_published":true,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"_wpas_customize_per_network":false},"categories":[760992135,760992136,1],"tags":[],"class_list":["post-535","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-api-integracje-pl","category-ksef-pl","category-non-categorizzato"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>KSeF: co to jest? Harmonogram i wdro\u017cenie - A-Cube API - NEWS<\/title>\n<meta name=\"description\" content=\"Poznaj harmonogram KSeF na lata 2026-2027. Dowiedz si\u0119, jak wdro\u017cy\u0107 e-faktury i skr\u00f3ci\u0107 czas zwrotu VAT do 40 dni. Sprawd\u017a nasz wpis!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.acubeapi.com\/pl\/ksef-system-efaktur-w-polsce\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"KSeF: co to jest? Harmonogram i wdro\u017cenie - A-Cube API - NEWS\" \/>\n<meta property=\"og:description\" content=\"Poznaj harmonogram KSeF na lata 2026-2027. Dowiedz si\u0119, jak wdro\u017cy\u0107 e-faktury i skr\u00f3ci\u0107 czas zwrotu VAT do 40 dni. 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System KSeF s\u0142u\u017cy do wystawiania, odbierania i archiwizowania faktur ustrukturyzowanych, a jego wprowadzenie ma ograniczy\u0107\u2026","rel":"","context":"W \u201eKSeF&quot;","block_context":{"text":"KSeF","link":"https:\/\/blog.acubeapi.com\/pl\/category\/ksef-pl\/"},"img":{"alt_text":"KSeF","src":"https:\/\/i0.wp.com\/blog.acubeapi.com\/wp-content\/uploads\/2025\/12\/KSeF.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/blog.acubeapi.com\/wp-content\/uploads\/2025\/12\/KSeF.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/blog.acubeapi.com\/wp-content\/uploads\/2025\/12\/KSeF.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/blog.acubeapi.com\/wp-content\/uploads\/2025\/12\/KSeF.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/blog.acubeapi.com\/wp-content\/uploads\/2025\/12\/KSeF.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/blog.acubeapi.com\/pl\/wp-json\/wp\/v2\/posts\/535","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.acubeapi.com\/pl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.acubeapi.com\/pl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.acubeapi.com\/pl\/wp-json\/wp\/v2\/users\/233060044"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.acubeapi.com\/pl\/wp-json\/wp\/v2\/comments?post=535"}],"version-history":[{"count":9,"href":"https:\/\/blog.acubeapi.com\/pl\/wp-json\/wp\/v2\/posts\/535\/revisions"}],"predecessor-version":[{"id":2697,"href":"https:\/\/blog.acubeapi.com\/pl\/wp-json\/wp\/v2\/posts\/535\/revisions\/2697"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.acubeapi.com\/pl\/wp-json\/wp\/v2\/media\/2691"}],"wp:attachment":[{"href":"https:\/\/blog.acubeapi.com\/pl\/wp-json\/wp\/v2\/media?parent=535"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.acubeapi.com\/pl\/wp-json\/wp\/v2\/categories?post=535"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.acubeapi.com\/pl\/wp-json\/wp\/v2\/tags?post=535"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}