About Certificates and KSeF 2.0 – an introduction

About Certificates and KSeF 2.0 – an introduction

Schedule – when do we have to switch to online invoicing?

Issuing invoices in KSeF will be mandatory from February 1, 2026, for entrepreneurs whose sales value (including tax) exceeded PLN 200 million in 2025.

Currently, we can voluntarily use KSeF version 1.0, which has a production environment (we describe the characteristics of each KSeF environment in the article entitled Test Environment - Pre-production - Production). From February 1, 2026, the applicable version will be KSeF 2.0, whose production environment will only be available from that date.

Do integracji KSeF obecnie używamy wygenerowane w systemie tokeny.
Notes
From November 1st, 2025, it is also possible to generate certificates for logging in and issuing invoices.
Info
Certificate authentication in the production environment will only be used from February 1, 2026, but tokens generated earlier will also work in KSeF 2.0 until December 31, 2026.
Alert
Certificates will be required for businesses whose sales in 2025 did not exceed PLN 200 million after April 1, 2026, in the case of offline invoicing (so-called emergency mode).


Proposed action plan for our Clients

  1. After November 25, SCANYE will once again offer the option of integrating KSeF with the program. You will be able to connect KSeF with SCANYE using the same procedure that we described in the instructions. 
    If you integrated KSeF with the program before October 3, you do not need to do so again.

  2. For Subiekt123 users – now is the time to connect Subiekt123 with KSeF. The current instructions are available in the Help Center.

  3. In December 2025 and January 2026, we will start using KSeF through our systems, using authentication via generated tokens.

  4. Starting February 1, 2026, we will begin collecting purchase invoices in KSeF from suppliers whose gross sales revenue in 2025 exceeded PLN 200 million. This change does not require any additional settings. Invoices should appear in SCANYE within 2 hours after issueing them in KSEF. (We encourage you to use the mobile app and enable notifications to stay up to date on incoming invoices. Apple Store - Google Play Store ) 

  5. From February 1, 2026, to September 30, 2026, we will change the authorization mode in KSeF from a token to a certificate. We are introducing certificates to replace tokens in SCANYE (and in Subiekt123 for users of that program). Certificates will be valid for two years.