{"id":998,"date":"2025-08-18T14:50:46","date_gmt":"2025-08-18T12:50:46","guid":{"rendered":"https:\/\/ksefapi.pl\/?p=998"},"modified":"2025-08-18T14:50:46","modified_gmt":"2025-08-18T12:50:46","slug":"ksef-co-to-jest-od-kiedy-bedzie-obowiazkowy","status":"publish","type":"post","link":"https:\/\/ksefapi.pl\/en\/ksef-co-to-jest-od-kiedy-bedzie-obowiazkowy\/","title":{"rendered":"KSeF \u2013 what is it and when will it be mandatory?"},"content":{"rendered":"<p><span>The National E-Invoice System (KSeF) is a very popular topic in 2025. Many businesses are looking for reliable information, as the Ministry of Finance has changed the framework for this solution several times, including postponing the effective date of the KSeF regulations. The following guide is a compendium of knowledge about the KSeF, presenting the status as of July 2025 \u2013 we invite you to read it.<\/span><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/ksefapi.pl\/en\/ksef-co-to-jest-od-kiedy-bedzie-obowiazkowy\/#Czym_jest_KSeF_czyli_Krajowy_System_e-Faktur\" >What is KSeF, or the National System of e-Invoices?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/ksefapi.pl\/en\/ksef-co-to-jest-od-kiedy-bedzie-obowiazkowy\/#Wersja_KSeF_10_a_wersja_KSeF_20_%E2%80%93_jaka_jest_roznica\" >KSeF version 1.0 and KSeF version 2.0 \u2013 what is the difference?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/ksefapi.pl\/en\/ksef-co-to-jest-od-kiedy-bedzie-obowiazkowy\/#Jak_dziala_KSeF\" >How does KSeF work?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/ksefapi.pl\/en\/ksef-co-to-jest-od-kiedy-bedzie-obowiazkowy\/#Od_kiedy_korzystanie_z_KSeF_bedzie_obowiazkowe\" >From when will the use of KSeF be mandatory?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/ksefapi.pl\/en\/ksef-co-to-jest-od-kiedy-bedzie-obowiazkowy\/#Czy_KSeF_bedzie_obowiazkowy_dla_kazdego_przedsiebiorcy\" >Will KSeF be mandatory for every entrepreneur?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/ksefapi.pl\/en\/ksef-co-to-jest-od-kiedy-bedzie-obowiazkowy\/#Czym_faktura_ustrukturyzowana_rozni_sie_od_elektronicznej_i_papierowej\" >How does a structured invoice differ from an electronic and paper invoice?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/ksefapi.pl\/en\/ksef-co-to-jest-od-kiedy-bedzie-obowiazkowy\/#Czy_KSeF_wyeliminuje_faktury_papierowe\" >Will KSeF eliminate paper invoices?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/ksefapi.pl\/en\/ksef-co-to-jest-od-kiedy-bedzie-obowiazkowy\/#Co_z_fakturami_z_kas_rejestrujacych\" >What about invoices from cash registers?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/ksefapi.pl\/en\/ksef-co-to-jest-od-kiedy-bedzie-obowiazkowy\/#Czy_z_KSeF_bedzie_trzeba_korzystac_wspolpracujac_z_zagranicznymi_firmami\" >Will it be necessary to use KSeF when cooperating with foreign companies?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/ksefapi.pl\/en\/ksef-co-to-jest-od-kiedy-bedzie-obowiazkowy\/#Czym_jest_tryb_offline_24\" >What is 24\/7 offline mode?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/ksefapi.pl\/en\/ksef-co-to-jest-od-kiedy-bedzie-obowiazkowy\/#KSeF_a_PEF_%E2%80%93_jaka_jest_roznica\" >KSeF and PEF \u2013 what is the difference?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/ksefapi.pl\/en\/ksef-co-to-jest-od-kiedy-bedzie-obowiazkowy\/#Uwierzytelnianie_certyfikatami_cyfrowymi_%E2%80%93_czym_sa_certyfikaty_KSeF\" >Digital certificate authentication \u2013 what are KSeF certificates?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/ksefapi.pl\/en\/ksef-co-to-jest-od-kiedy-bedzie-obowiazkowy\/#Co_jeszcze_warto_wiedziec_o_KSeF\" >What else is worth knowing about KSeF?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/ksefapi.pl\/en\/ksef-co-to-jest-od-kiedy-bedzie-obowiazkowy\/#Co_zyskuja_przedsiebiorcy_ktorzy_korzystaja_z_KSeF\" >What do entrepreneurs gain by using KSeF?<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Czym_jest_KSeF_czyli_Krajowy_System_e-Faktur\"><\/span><span>What is KSeF, or the National System of e-Invoices?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span>KSeF is a platform prepared by the Ministry of Finance, which is used to issue and receive structured invoices electronically.\u00a0<\/span><b><span>Using KSeF it is possible to generate and share structured invoices (in XML format)<\/span><\/b><span>The operation of KSeF will ensure that issued invoices will be transferred to a central database, which will increase the security of their circulation.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Wersja_KSeF_10_a_wersja_KSeF_20_%E2%80%93_jaka_jest_roznica\"><\/span><span>KSeF version 1.0 and KSeF version 2.0 \u2013 what is the difference?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span>In the context of KSeF, we can speak of two versions \u2013 KSeF 1.0 and KSeF 2.0.\u00a0<\/span><b><span>KSeF 1.0 is the initial version (test environment) that entrepreneurs currently use voluntarily<\/span><\/b><span>.<\/span><\/p>\n<p><b><span>KSeF 2.0 is a version of the National e-Invoice System that has been optimized<\/span><\/b><span>\u00a0\u2013 taking into account the comments of entrepreneurs, accounting offices, auditors and software suppliers.\u00a0<\/span><b><span>It will be mandatory from 2026.<\/span><\/b><span>\u00a0(details below). KSeF 2.0 differs from KSeF 1.0 in several ways, including the available methods for sending invoices.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Jak_dziala_KSeF\"><\/span><span>How does KSeF work?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span>To issue a structured invoice, the user can use the software and API provided by the Ministry of Finance or choose a commercial solution and thus, for example, integrate the software already used with KSeF.\u00a0<\/span><b><span>The process of issuing structured invoices is characterized by<\/span><\/b><span>:<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><span>assigning a unique number to the invoice \u2013 this is a number separate from the invoice number assigned by the entrepreneur;<\/span><\/li>\n<li aria-level=\"1\"><span>issuing an official receipt certificate (UPO) \u2013 it is generated for the invoice issuer;<\/span><\/li>\n<li aria-level=\"1\"><span>authentication, which must be performed by the invoice recipient \u2013 otherwise he will not be able to view the invoice.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Od_kiedy_korzystanie_z_KSeF_bedzie_obowiazkowe\"><\/span><span>From when will the use of KSeF be mandatory?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span>The National E-Invoice System is nothing new \u2013 it&#039;s a solution that businesses can voluntarily use from the beginning of 2022. At the same time, the effective dates of the mandatory version of the KSeF have been postponed several times. Ultimately, the KSeF will be mandatory from:<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><b><span>February 1, 2026<\/span><\/b><span>\u00a0\u2013 for large entrepreneurs (entities whose sales value together with the tax amount exceeded PLN 200 million in 2024);<\/span><\/li>\n<li aria-level=\"1\"><b><span>April 1, 2026\u00a0<\/span><\/b><span>\u2013 for all other entrepreneurs (except for digitally excluded entrepreneurs).<\/span><\/li>\n<\/ul>\n<p><b><span>Digitally excluded entrepreneurs\u00a0<\/span><\/b><span>will be given more time to adapt to the changes being introduced \u2013\u00a0<\/span><b><span>KSeF will be mandatory for them only from the beginning of 2027.\u00a0<\/span><\/b><span>This loophole is available only to the smallest entrepreneurs \u2013 in their case, the monthly sales value (including tax) documented by invoices cannot exceed PLN 10,000.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Czy_KSeF_bedzie_obowiazkowy_dla_kazdego_przedsiebiorcy\"><\/span><span>Will KSeF be mandatory for every entrepreneur?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span>The National e-Invoice System will be used by: entrepreneurs registered as active VAT payers, entrepreneurs exempt from VAT, and taxpayers with a Polish Tax Identification Number (NIP) and using the OSS procedure. Article 106ga, paragraph 2 of the VAT Act, provides information on when issuing invoices in the National e-Invoice System will not be mandatory.<\/span><\/p>\n<p><b><span>Who is not subject to the obligation to issue structured invoices using the National e-Invoice System \u2013 examples<\/span><\/b><span>:<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><span>taxpayers who do not have a registered office or permanent place of business in Poland,<\/span><\/li>\n<li aria-level=\"1\"><span>taxpayers who issue invoices to the purchaser of goods or services who is a natural person not conducting business activity,<\/span><\/li>\n<li aria-level=\"1\"><span>taxpayers who benefit from the exemption when they do not exceed the turnover limit of PLN 200,000.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Czym_faktura_ustrukturyzowana_rozni_sie_od_elektronicznej_i_papierowej\"><\/span><span>How does a structured invoice differ from an electronic and paper invoice?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span>KSeF allows for the issuance of structured invoices, which are sent electronically. However, this does not mean that structured invoices and electronic invoices are equivalent.\u00a0<\/span><b><span>A structured invoice is an invoice issued in XML format that has a defined logical structure<\/span><\/b><span>.<\/span><b><\/b><span>An XML format is not required for an electronic invoice \u2013 it can be sent to the customer electronically, e.g. in PDF format.<\/span><\/p>\n<p><b><span>A structured invoice differs from a paper invoice in its form \u2013 the former is in electronic form, while the latter is a physical document (in paper form).<\/span><\/b><span>The difference is also visible when it comes to archiving \u2013 in the case of paper documentation, it is more expensive and time-consuming.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Czy_KSeF_wyeliminuje_faktury_papierowe\"><\/span><span>Will KSeF eliminate paper invoices?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><b><span>Ultimately, KSeF will result in paper invoices no longer being used in business transactions.\u00a0<\/span><\/b><span>\u2013 The National e-Invoice System will force a nationwide transition to electronic invoicing. At the same time, not every transaction will need to be documented with a structured invoice \u2013 examples of exceptions include:<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><span>invoices issued to consumers,<\/span><\/li>\n<li aria-level=\"1\"><span>single tickets that drivers receive when using toll road sections,<\/span><\/li>\n<li aria-level=\"1\"><span>invoices issued by taxpayers who use the non-EU OSS or IOSS procedure.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Co_z_fakturami_z_kas_rejestrujacych\"><\/span><span>What about invoices from cash registers?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span>Some entrepreneurs issue fiscal receipts daily, which are considered invoices (up to PLN 450 with the buyer&#039;s Tax Identification Number). Therefore, the Ministry of Finance has decided on a transitional period \u2013\u00a0<\/span><b><span>By the end of 2026, entrepreneurs subject to the obligation to issue structured invoices will be able to issue<\/span><\/b><span>:<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><span>invoices in electronic form or paper invoices using cash registers,<\/span><\/li>\n<li aria-level=\"1\"><span>receipts that will be recognized as invoices.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Czy_z_KSeF_bedzie_trzeba_korzystac_wspolpracujac_z_zagranicznymi_firmami\"><\/span><span>Will it be necessary to use KSeF when cooperating with foreign companies?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span>Some entrepreneurs from Poland have foreign clients.\u00a0<\/span><b><span>Such cooperation does not exempt the entity subject to the obligation to use the National e-Invoice System from issuing a structured invoice<\/span><\/b><span>At the same time, the entrepreneur will gain additional obligations \u2013 he will have to provide the invoice with a verification code (QR code) and forward it to the recipient (contractor) in the agreed form.<\/span><\/p>\n<p><span>By marking the invoice with a QR code, the recipient will have access to it in the National Tax Administration (KSeF) and will be able to verify the data. The invoice issuer will also be obligated to provide the verification code to consumers or buyers who do not use a Tax Identification Number (NIP).<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Czym_jest_tryb_offline_24\"><\/span><span>What is 24\/7 offline mode?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span>In the KSeF 2.0 version, the online mode of issuing structured invoices will not be the only option \u2013 an offline mode will also be available.\u00a0<\/span><b><span>The Ministry of Finance distinguishes between two procedures \u2013 offline mode and offline mode.24 The differences between them are as follows:<\/span><\/b><span>:<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><b><span>offline mode\u00a0<\/span><\/b><span>applies in the event of system unavailability - the user will be able to issue an invoice based on the template and will then have 7 business days from the removal of the failure to send the document to KSeF (unless a so-called total failure occurs, which will be announced in the media - then sending the issued invoice or invoices to KSeF will not be necessary);<\/span><\/li>\n<li aria-level=\"1\"><b><span>offline mode24\u00a0<\/span><\/b><span>was created as a response to concerns raised by test mode users - this is a solution that the user will use in case of problems with the internet connection, and which involves issuing an invoice in accordance with the applicable template and sending it to KSeF no later than the next business day after its issuance.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"KSeF_a_PEF_%E2%80%93_jaka_jest_roznica\"><\/span><span>KSeF and PEF \u2013 what is the difference?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span>KSeF is not the first platform supporting the trading of structured invoices.\u00a0<\/span><b><span>Since 2019, PEF (Electronic Invoicing Platform) has been operating in Poland \u2013 a solution enabling the transfer of structured documents between entrepreneurs and public institutions<\/span><\/b><span>However, KSeF and PEF are two distinct and unrelated systems. The differences between them are as follows:<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><b><span>KSeF\u00a0<\/span><\/b><span>is a nationwide platform through which entrepreneurs can issue, send and store structured invoices \u2013 this solution is intended to replace the previously issued paper and electronic invoices in everyday economic circulation;<\/span><\/li>\n<li aria-level=\"1\"><b><span>PEF\u00a0<\/span><\/b><span>is a platform dedicated to public procurement \u2013 it is used by public entities placing orders and contractors.<\/span><\/li>\n<\/ul>\n<p><span>Importantly, KSeF and PEF are not integrated with each other \u2013 documents issued on one platform will not be available on the other.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Uwierzytelnianie_certyfikatami_cyfrowymi_%E2%80%93_czym_sa_certyfikaty_KSeF\"><\/span><span>Digital certificate authentication \u2013 what are KSeF certificates?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span>The KSeF implementation project originally assumed authentication using tokens \u2013 after the changes, this method will be replaced by digital certificates with a validity period of 2 years.\u00a0<\/span><b><span>When the obligation to issue invoices via KSeF comes into force, entrepreneurs will be able to use both certificates and tokens \u2013 the latter method of authentication will no longer be available from 1 January 2027.<\/span><\/b><\/p>\n<p><span>Businesses can apply for a KSeF certificate from November 1, 2025. A KSeF certificate will be required to mark structured invoices with a code identifying the issuer when they are issued in emergency, offline, and offline modes.24 Implementing certificate support in a company&#039;s system can be challenging for businesses (partly due to the XAdES-BES electronic signature format), so it&#039;s worth considering using a commercial solution \u2013 for example, our KSeF API.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Co_jeszcze_warto_wiedziec_o_KSeF\"><\/span><span>What else is worth knowing about KSeF?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span>The Ministry of Finance has changed the assumptions of the KSeF many times, as a result of which contradictory information has appeared in the public space.\u00a0<\/span><b><span>In July 2025 it is known that<\/span><\/b><span>:<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><span>the KSeF invoice number will only need to be provided when making payments between active taxpayers from 2027,<\/span><\/li>\n<li aria-level=\"1\"><span>issuing VAT RR invoices and VAT RR CORRECTION invoices will be available to KSeF users only from April 1, 2026,<\/span><\/li>\n<li aria-level=\"1\"><span>Entrepreneurs using KSeF will be able to issue invoices with attachments from February 1, 2026.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Co_zyskuja_przedsiebiorcy_ktorzy_korzystaja_z_KSeF\"><\/span><span>What do entrepreneurs gain by using KSeF?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span>Although the National System of e-Invoices is not yet mandatory in 2025, entrepreneurs who decide to use the National System of e-Invoices can gain a lot.\u00a0<\/span><b><span>The key benefits of using KSeF are as follows:<\/span><\/b><span>:<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><span>no need to archive invoices \u2013 this means lower costs;<\/span><\/li>\n<li aria-level=\"1\"><span>no need to issue duplicate invoices \u2013 KSeF prevents invoices from being lost;<\/span><\/li>\n<li aria-level=\"1\"><span>possibility of obtaining a tax refund in a shorter period \u2013 40 days instead of 60 days;<\/span><\/li>\n<li aria-level=\"1\"><span>fast and automated exchange of invoices between companies \u2013 saving time;<\/span><\/li>\n<li aria-level=\"1\"><span>security \u2013 data included on the invoice in KSeF cannot be manipulated.<\/span><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>The National E-Invoice System (KSeF) is a hot topic in 2025. Many businesses are looking for reliable information, as the Ministry of Finance has changed the guidelines for this solution several times, including postponing the effective date of the KSeF regulations. The following guide is a compendium of knowledge about the KSeF, presenting the status as of July 2025 \u2013 we invite you [\u2026]<\/p>","protected":false},"author":3,"featured_media":351,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11,10,6],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ksefapi.pl\/en\/wp-json\/wp\/v2\/posts\/998"}],"collection":[{"href":"https:\/\/ksefapi.pl\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ksefapi.pl\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ksefapi.pl\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/ksefapi.pl\/en\/wp-json\/wp\/v2\/comments?post=998"}],"version-history":[{"count":1,"href":"https:\/\/ksefapi.pl\/en\/wp-json\/wp\/v2\/posts\/998\/revisions"}],"predecessor-version":[{"id":999,"href":"https:\/\/ksefapi.pl\/en\/wp-json\/wp\/v2\/posts\/998\/revisions\/999"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ksefapi.pl\/en\/wp-json\/wp\/v2\/media\/351"}],"wp:attachment":[{"href":"https:\/\/ksefapi.pl\/en\/wp-json\/wp\/v2\/media?parent=998"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ksefapi.pl\/en\/wp-json\/wp\/v2\/categories?post=998"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ksefapi.pl\/en\/wp-json\/wp\/v2\/tags?post=998"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}