Embed the KSeF tools

For accounting firms, chambers, associations and publishers: copy once, and new deadlines and rule changes appear by themselves.

Does KSeF apply, and from when?

Three inputs, and your readers see when they must issue invoices in KSeF and whether the PLN 10,000 limit covers them.

<iframe src="https://ksefnarzedzia.pl/embed/en/czy-ksef/" title="Does KSeF apply, and from when?" width="100%" height="760" style="border:0;max-width:1100px" loading="lazy"></iframe>

Offline invoice sending deadline

Offline24, unavailability, failure: the KSeF sending deadline with weekends and public holidays skipped.

<iframe src="https://ksefnarzedzia.pl/embed/en/tryb-offline/" title="Offline invoice sending deadline" width="100%" height="720" style="border:0;max-width:1100px" loading="lazy"></iframe>

KSeF invoice reader

Opens a KSeF XML file as a readable invoice. The file stays on your reader’s device.

<iframe src="https://ksefnarzedzia.pl/embed/en/czytnik-faktury/" title="KSeF invoice reader" width="100%" height="1200" style="border:0;max-width:1100px" loading="lazy"></iframe>

For the Polish version, replace /embed/en/ with /embed/pl/. Terms: the source link under the tool stays visible, the tool is not altered and is provided without warranty. What readers type or open stays on their device. Questions through the contact page.

As of 2026, laws and ministry notices checked on