The national e-invoicing system is a centralized e-invoicing system that makes it mandatory for companies to send their invoices directly through the tax authorities' platform. It is part of a larger wave in the EU, where countries are digitizing VAT reporting to combat VAT fraud.

Acubiz support

Acubiz will scan receipts electronically and read the following information

1. Unique EID (Most important)
   This is proof that the invoice is legally valid, and it must be used in the event of VAT reporting.

2. VAT number 
   The tax number is mandatory.

3. Invoice number: 
   The invoice issuer's invoice number.

4. Issue date: 
   The date the invoice was created.

Acubiz app	Acubiz finance in web platform

The above data is only test/example data.

The scanned information will be added to the customer's export setup in Acubiz, so the information can be imported into the ERP system.

What is the eInvoice model?

It is a so-called "Clearance Model", which fundamentally changes how invoicing is done. The tax authorities see the transaction the moment it takes place. This makes it almost impossible to operate with "shadow invoices" or illegal VAT refunds.

• Poland timeline: 

  • February 1, 2026: Large companies (revenue over 200 million PLN).

  • April 1, 2026: All other VAT-registered companies.

How is it implemented in other EU countries?

Poland is not alone. They are following in the footsteps of Italy and countries like Romania and France, which are working on similar models. Implementation in the rest of the EU is mainly happening through two tracks:

• VAT in the Digital Age
  This is the EU's overall legislative package to harmonize e-invoicing across borders.

  • Standardization: From July 2030, e-invoicing will be the standard for all cross-border transactions in the EU.
  • Harmonization: Countries like Poland, which have built their own systems (KSeF), will be required to adapt them to the EU standard (EN 16931) no later than 2035, so the systems can communicate withul
  • Different national approaches:
    Although the goal is the same, countries choose different technical paths:
    • All invoices must go through a government portal.
    • Decentralized model (France/Belgium): Here, approved private platforms (PDP) are allowed to exchange invoices directly with each other, after which they report data to the state. This is more similar to the existing Peppol network, which Denmark also uses for the public sector (B2G)

  Overview: Status in selected EU countries

  Status as of 01-28-2026 - search for additional status via Google

  Country	Model type	Status
  Italy	Centralized (SdI)	Already mandatory for all.
  Poland	Centralized (KSeF)	Mandatory from Feb/Apr 2026.
  Romania	Centralized (RO e-Factura)	Already mandatory (2024).
  France	Decentralized	Rollout begins in Sept. 2026.
  Germany	Hybrid/Peppol-based	Phased rollout started Jan. 2025.

  Important note: If your company trades with Polish partners, you should be aware that your invoices to them (imports to Poland) are currently outside the KSeF requirement, but your Polish suppliers will begin to send you invoices generated in the system.