- The National e-Invoice System (KSeF) is available for testing.
- The login method for KSeF differs for individuals and companies.
- The Ministry of Finance and the National Revenue Administration invite micro-entrepreneurs to online meetings to explain the main principles of KSeF.
- E-invoices are currently allowed alongside paper invoices and existing electronic invoices.
- Mandatory issuance of structured invoices in KSeF will begin on July 1, 2024.
- VAT-exempt entrepreneurs will be required to use KSeF from January 1, 2025.
- KSeF has been available as an optional solution since the beginning of 2022.
- Login to KSeF can be done using Trusted Profile, qualified electronic signature, or qualified electronic seal.
- Commercial software can be used for practical and convenient login.
- Individuals can use Trusted Profile or qualified electronic signature for authentication.
- Commercial entities with a qualified electronic seal containing a tax identification number (NIP) can use KSeF without notifying the tax office.
- Individuals without a qualified electronic signature containing NIP and PESEL can submit a fingerprint signature notification.
- Entities without a qualified electronic seal must designate an authorized individual for KSeF usage through a notification.
- The authorized individual can grant themselves permissions for issuing and accessing invoices.
- The e-microfirm application in the e-Tax Office facilitates the use of KSeF for sole proprietors.
- The e-microfirm application allows linking existing accounts with KSeF and issuing invoices in KSeF.
Source: gov.pl
Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.
Latest Posts in "Poland"
- How to Correct Structured Invoices in KSeF Issued with Incorrect Buyer NIP After February 2026
- KSeF 2.0: Key 2026-2027 Deadlines for Polish Retailers and Cash Register Invoicing
- Museum Can Deduct 100% VAT on Investments, Supreme Administrative Court Rules in Landmark Decision
- Corrective Invoices in KSeF 2026: New Rules and Required Information for Issuing
- Open Days and Extended Hours for National e-Invoice System at Tax Offices in January 2026














