W jakim terminie należy przekazać fakturę do KSeF?

By when must an invoice be submitted to KSeF?

First of all, it should be emphasized that KSeF is not a system for reporting issued invoices, but a system designed for issuing them. A document prepared in the taxpayer's accounting systems must be issued using KSeF. Such a document is submitted to the system, and it acquires the status of an invoice only after being assigned a KSeF number, with the exception of offline24, offline, and emergency modes.

In the case of a structured invoice issued in online mode, the invoice is considered issued on the date of its submission to KSeF, provided that the date indicated in field P_1 corresponds to the date of submitting the invoice XML file to the system. This type of invoice is issued in KSeF in real time.

In the case of invoices issued in offline24 mode, offline mode (system unavailability), or emergency mode, the legislation specifies deadlines for submitting invoices to KSeF. In offline24 mode, the invoice must be submitted immediately, no later than the next business day after the day of its issuance. In offline mode (system unavailability), the invoice must be submitted to KSeF no later than the next business day after the end of the unavailability period. In emergency mode, the invoice must be submitted to KSeF no later than seven business days from the end of the system failure.

Invoices issued in all three of the above modes are considered issued on the date indicated by the taxpayer in field P_1 of the FA logical structure.

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