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Poland uses a clearance model through KSeF. B2B e-invoicing is being phased in, with large taxpayers from February 2026, all taxpayers from April 2026 and micro-entrepreneurs from January 2027. B2G has been mandatory via PEF since 2019. Formats include KSeF XML (FA(3) schema) and Peppol BIS 3.0.
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Key mandate dates. Select a date for detail, or show all updates below.
The Ministry of Finance held its first consultation after the partial KSeF rollout on 9 June 2026, following the invitation published on 3 June 2026. Discussion covered the business-event model and a change-synchronisation mechanism for e-invoices in the KSeF 2.0 API, and the Ministry proposed keeping authentication tokens available beyond 31 December 2026 with validity of 1 to 365 days, per the consultation summary.
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Anyone else sit in on the KSeF consultation on 9 June? Two things came out of it. The business event model and the sync mechanism in the…
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