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Poland confirms phased KSeF e-invoicing rollout from February 2026, starting with large taxpayers; exemptions for low-volume businesses last until January 2027, ensuring gradual mandatory compliance for most entities.
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Key milestones include API documentation by June 2025, legislative completion in July, open API testing in September, and authentication certificates from November, preparing businesses for smooth system adoption.
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KSeF 2.0 updates cover GDPR compliance, permanent Offline24 mode for invoice issuance during outages, new structured attachment rules, and revised invoicing conditions outside the platform for entities without Polish NIP.
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Businesses must assess KSeF applicability, update invoicing systems for new FA(3) schema, obtain authentication certificates, and engage software providers early to ensure readiness for the February 2026 mandate.
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