National E-Invoicing System (KSeF)

Poland: National E-Invoicing System (KSeF)

An updated version of the National e-Invoicing System (KSeF) is now available.

This version has been updated to support FA(2) logical structure – this will facilitate IT systems integration with the upcoming changes to KSeF.

Businesses using KSeF are only permitted to issue invoices according to the FA(2) structure – this replaced FA(1) from 1 September 2023.

Mandatory e-invoicing is due to come into effect from 1 July 2024.

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