{"id":8311,"date":"2026-05-15T15:29:47","date_gmt":"2026-05-15T13:29:47","guid":{"rendered":"https:\/\/podpisano-new.local\/?p=8311"},"modified":"2026-05-15T15:29:47","modified_gmt":"2026-05-15T13:29:47","slug":"uwierzytelnienie-ksef-przewodnik-dla-firm-jdg-jst","status":"publish","type":"post","link":"https:\/\/podpisano.pl\/en\/uwierzytelnienie-ksef-przewodnik-dla-firm-jdg-jst\/","title":{"rendered":"KSeF applies: How to effectively authenticate your company to the system? A guide to authentication for your company"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"8311\" class=\"elementor elementor-8311\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-dc68e6e e-con-full e-flex e-con e-child\" data-id=\"dc68e6e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-bb58e09 e-con-full e-flex e-con e-child\" data-id=\"bb58e09\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5c1d5b0 elementor-widget elementor-widget-text-editor\" data-id=\"5c1d5b0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span data-path-to-node=\"2,0\"><strong>National e-Invoicing System (KSeF)<\/strong> has ceased to be a mere technological announcement and has become a binding legal reality<\/span><span data-path-to-node=\"2,2\">. This change redefines the way we understand the issuance of sales documents - an invoice is no longer a PDF file sent by email, but a structured set of digital data in XML format<\/span><span data-path-to-node=\"2,4\">. But before your company can send the first document to the Ministry's system, it must go through a key step: successful authentication. This is the process of confirming identity, which is the digital key to the gates of the Ministry of Finance<\/span><span data-path-to-node=\"2,6\">. Without it, the system will not recognize your authorization to operate under a specific number NIP (Tax Identification Number).<\/span><span data-path-to-node=\"2,8\">.<\/span><\/p><p><span style=\"font-weight: 400;\">Depending on whether:<\/span><\/p><ul><li><span style=\"font-weight: 400;\"> leading JDG, <\/span><\/li><li><span style=\"font-weight: 400;\">you are the chairman of a limited liability company, <\/span><\/li><li><span style=\"font-weight: 400;\">Whether you manage a housing community, <\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Your path to KSeF will be different. We have prepared for you a summary - a kind of \u201eroad map\u201d of logging.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-23011f6 elementor-widget elementor-widget-heading\" data-id=\"23011f6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How to enter KSeF? Roadmap for different forms of activity<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c123ecb elementor-widget elementor-widget-text-editor\" data-id=\"c123ecb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">The most common questions we encounter are: how to <a href=\"https:\/\/podpisano.pl\/en\/jak-zalogowac-sie-do-ksef-instrukcja\/\">set up<\/a> KSeF user account? <\/span><\/p><p><span style=\"font-weight: 400;\">The good news - the account is not created. It's already there (assigned to NIP), you just need to prove that you have the right to use it.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c497906 elementor-widget elementor-widget-heading\" data-id=\"c497906\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"> How the various entities authenticate \n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3892a8f elementor-widget elementor-widget-text-editor\" data-id=\"3892a8f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><b>Individual<\/b><span style=\"font-weight: 400;\"> (non-business) \/ JDG (sole proprietorship)\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">Here the matter is the simplest. You are the \u201erudder, sailor and ship.\u201d.<\/span><\/p><p><span style=\"font-weight: 400;\"><strong>Method<\/strong>: you authenticate \u201eyourself\u201d.<\/span><\/p><p><span style=\"font-weight: 400;\"><strong>Tools<\/strong>: free Trusted Profile or <strong>Qualified Electronic Signature (QES)<\/strong>.<\/span><\/p><p><span style=\"font-weight: 400;\"><strong>Action<\/strong>: you log in directly. The system recognizes your PESEL associated with the company's NIP.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-303fe7a e-con-full e-flex e-con e-child\" data-id=\"303fe7a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a5b3de4 elementor-widget elementor-widget-text-editor\" data-id=\"a5b3de4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><b>Commercial Law Companies<\/b><span style=\"font-weight: 400;\"> (Limited Liability, Joint Stock, Limited Partnership, General Partnership) Here we enter the world of \u201enon-individual entities.\u201d The company has no hands to sign, nor does it have PESEL. Instead, it has NIP.<\/span><\/p><p><span style=\"font-weight: 400;\"><strong>Method\u00a0<\/strong> - option <a href=\"https:\/\/podpisano.pl\/en\/jak-uwierzytelnic-spolke-w-ksef\/\">recommended<\/a>: <strong>Qualified Electronic Seal.<\/strong> This is a digital version of the company stamp. It allows you to automate and make your processes independent of a specific individual (such as the CEO, who may be on vacation).<\/span><\/p><p><span style=\"font-weight: 400;\">The traditional option: filing a ZAW-FA notice with the Tax Office. In it, you designate a specific person (e.g., the President) who will log in with his private signature on behalf of the company.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-da4836e elementor-widget elementor-widget-text-editor\" data-id=\"da4836e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><b>\u201eThird sector\u201d entities\u201d<\/b><span style=\"font-weight: 400;\"> and others (Associations, Foundations, Cooperatives, Housing Communities). <\/span><\/p><p><span style=\"font-weight: 400;\">The principle is similar to that of companies. Questions are often asked: is KSeF mandatory for all entrepreneurs? <strong>Yes<\/strong>, also for <strong>active VAT taxpayers in these groups.<\/strong><\/span><\/p><p><span style=\"font-weight: 400;\"><strong>Method<\/strong>: if the entity has NIP, it can produce an electronic seal.<\/span><\/p><p><span style=\"font-weight: 400;\">Alternative: If the board is multi-member or you don't want to invest in a seal, you will need to file a ZAW-FA to authorize an individual (such as the property manager or treasurer of the association) to log in.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-82eef1c elementor-widget elementor-widget-text-editor\" data-id=\"82eef1c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><b>Local Government Units<\/b><span style=\"font-weight: 400;\"> (JST - Municipalities, Counties) - a river topic: the municipality as a \u201esuper-taxpayer\u201d has schools, kindergartens (budget units) under it.<\/span><\/p><p><span style=\"font-weight: 400;\"><strong>Main Office<\/strong>: shall be authenticated with a qualified seal or indicate the person (Mayor\/Mayor) by ZAW-FA.<\/span><\/p><p><span style=\"font-weight: 400;\"><strong>Subordinate units<\/strong>: they receive powers granted \u201efrom above\u201d by the main unit or use powers in a hierarchical model.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dfe810d elementor-widget elementor-widget-heading\" data-id=\"dfe810d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Qualified Electronic Seal - a game-changing solution for KSeF<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a03da6a e-con-full e-flex e-con e-child\" data-id=\"a03da6a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-487dea0 elementor-widget elementor-widget-text-editor\" data-id=\"487dea0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span data-path-to-node=\"24,0\">Electronic Stamp is the digital equivalent of a company stamp<\/span><span data-path-to-node=\"24,2\">. It is she who allows ERP systems to send invoices in bulk, automatically, without involving employees for each signature<\/span><span data-path-to-node=\"24,4\">. Provides independence from personnel changes and the highest level of data security<\/span><span data-path-to-node=\"24,6\">.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-787ee1d elementor-widget elementor-widget-heading\" data-id=\"787ee1d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Why is it worth it?\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5cfe691 elementor-widget elementor-widget-text-editor\" data-id=\"5cfe691\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><b>Automation<\/b><\/p><p><span style=\"font-weight: 400;\">Finance and accounting systems need a seal to \u201esign\u201d bulk mailings without a human being and an accountant clicking each time.<\/span><\/p><p><b>Security and Integrity<\/b><span style=\"font-weight: 400;\">:<\/span><\/p><p><span style=\"font-weight: 400;\">The seal guarantees that the document is from a specific company and has not been altered after it was issued.<\/span><\/p><p><b>Independence <\/b><\/p><p><span style=\"font-weight: 400;\">Employees may leave the company, but the stamp assigned to the organization's NIP remains, ensuring continuity of processes without the need to submit new ZAW-FA forms with each personnel change.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3c58825 elementor-widget elementor-widget-heading\" data-id=\"3c58825\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What about failures? OFFLINE mode and the role of the certificate<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-60e3818 elementor-widget elementor-widget-text-editor\" data-id=\"60e3818\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">The Ministry of Finance has provided for <a href=\"https:\/\/podpisano.pl\/en\/ksef-offline-dwa-kody-qr-certyfikat-ksef-typ-2\/\">emergency scenarios<\/a>. If the system is unavailable, an invoice can be issued with a QR code (Quick Response - a graphical code that allows quick reading of data), which must be sent to the system within one business day after the failure has ceased. <\/span><\/p><p><span style=\"font-weight: 400;\">Remember, however, that a KSeF Type 2 Certificate is required to generate the issuer's identity verification codes in OFFLINE mode.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7cee27e elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"7cee27e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7a21bd6 elementor-widget elementor-widget-text-editor\" data-id=\"7a21bd6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">KSeF is not just a new tax obligation, it's a digital leap for your business. The key to a smooth transition through this revolution is choosing the right digital identity. <\/span><\/p><p><span style=\"font-weight: 400;\">Whether you run a small JDG or manage a large joint-stock company, take care of your signature or seal today. Don't wait for the final bell or a system failure on the last day of the deadline.<\/span><\/p><p><span style=\"font-weight: 400;\">If you need help getting a qualified electronic seal or signature check out the offer on podpisano.pl.<\/span><\/p><p><span style=\"font-weight: 400;\">For more information about KSeF procedures, visit the official website<\/span><a href=\"https:\/\/ksef.podatki.gov.pl\/\"> <span style=\"font-weight: 400;\">ksef.podatki.gov.pl<\/span><\/a><span style=\"font-weight: 400;\"> And in our knowledge base.<\/span><\/p><p><i><span style=\"font-weight: 400;\">The article is based on Handbook KSeF 2.0 (MF, September 2025) and information from ksef.podatki.gov.pl.<\/span><\/i><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-eb890d7 e-flex e-con-boxed e-con e-child\" data-id=\"eb890d7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div 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