Poland E-Invoicing KSeF in SAP



The National System of e-invoices (KSeF – Krajowego Systemu e-Faktur) enables the issuing and sharing of XML structured invoices. In the initial period, structured invoices will function in business transactions as one of the accepted forms of documenting transactions, in addition to the paper invoices and electronic invoices currently used in business transactions.


  • From October to December 2021, a pilot will be conducted with the participation of taxpayers. 
  • From January 1, 2022, the National System of e-invoices will be presented as a voluntary solution. From then on, invoices can be issued under KSeF.
  • It is planned to make the National System of e-Invoices an obligatory solution in 2023.
  • It shall apply from 1 January 2024 until 31 December 2026.

European Directive

According to the latest European Directive, it shall apply from 1 January 2024 until 31 December 2026.

Poland E-Invoicing KSeF in SAP Warsaw

Poland E-Invoicing KSeF in SAP – How can we help?

1- Add-On Solution:

Add-On Solution

You can use our add-on solution imported into SAP from the S4FN namespace.

We offer an add-on solution for SAP that complies with e-Invoicing in Poland. As all our objects are in the S4FN namespace it is risk-free for overwriting any existing objects in SAP.

S4FN uses direct API communication without needing any third-party software. SAP directly communicates with the KSeF services to submit the invoices. For the sake of digital signature operations, S4FN uses a built-in signing service under your infrastructure.

2- Data Extractor as an External Service:

Don’t change SAP

Submit invoices to the tax agency system without changing SAP with our data extractor tool.

As a lightweight solution check out our other KSeF solution which doesn’t require any change or SAP requests lowering both implementation efforts and costs. The tool uses RFC connectivity to extract data from SAP.


Flat pricing includes licensing and implementation.


A yearly subscription and on-demand maintenance plans are available.

For more information and pricing please send an inquiry to contact@s4fn.com or contact us here.

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