The VAT Act introduces mandatory KSeF, effective from July 1, 2024, with some smaller changes effective from September 1, 2023. The changes include simplification of advance payment invoices, new requirements for identifying advance invoices in KSeF on final invoices, and numbers identifying corrected invoices on corrective invoices. Additionally, a new logical structure FA(2) replaced FA(1) in the KSeF invoice on September 1, 2023.
Source Enodo
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